.jvectormap-label {
    position: absolute;
    display: none;
    border: solid 1px #CDCDCD;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    background: #292929;
    color: white;
    font-family: sans-serif, Verdana;
    font-size: smaller;
    padding: 3px;
}

.jvectormap-zoomin, .jvectormap-zoomout {
    position: absolute;
    left: 10px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    border-radius: 3px;
    background: #292929;
    padding: 3px;
    color: white;
    cursor: pointer;
    line-height: 10px;
    text-align: center;
}

.jvectormap-zoomin {
    top: 10px;
}

.jvectormap-zoomout {
    top: 30px;
}/**
* Template Name: iPortfolio
* Updated: May 30 2023 with Bootstrap v5.3.0
* Template URL: https://bootstrapmade.com/iportfolio-bootstrap-portfolio-websites-template/
* Author: BootstrapMade.com
* License: https://bootstrapmade.com/license/
*/

/*--------------------------------------------------------------
# General
--------------------------------------------------------------*/
body {
  font-family: "Open Sans", sans-serif;
  color: #272829;
}

a {
  color: #149ddd;
  text-decoration: none;
}

a:hover {
  color: #37b3ed;
  text-decoration: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Raleway", sans-serif;
}

/*--------------------------------------------------------------
# Back to top button
--------------------------------------------------------------*/
.back-to-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 15px;
  bottom: 15px;
  z-index: 996;
  background: #149ddd;
  width: 40px;
  height: 40px;
  border-radius: 50px;
  transition: all 0.4s;
}

.back-to-top i {
  font-size: 28px;
  color: #fff;
  line-height: 0;
}

.back-to-top:hover {
  background: #2eafec;
  color: #fff;
}

.back-to-top.active {
  visibility: visible;
  opacity: 1;
}

/*--------------------------------------------------------------
# Header
--------------------------------------------------------------*/
#header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 300px;
  transition: all ease-in-out 0.5s;
  z-index: 9997;
  transition: all 0.5s;
  padding: 0 15px;
  background: #202020;
  overflow-y: auto;
}

#header .profile img {
  margin: 15px auto;
  display: block;
  width: 120px;
  border: 8px solid #2c2f3f;
}

#header .profile h1 {
  font-size: 15px;
  margin: 0;
  padding: 0;
  font-weight: 600;
  -moz-text-align-last: center;
  text-align-last: center;
  font-family: "Poppins", sans-serif;
}

#header .profile h1 a,
#header .profile h1 a:hover {
  color: #fff;
  text-decoration: none;
}

#header .profile .social-links a {
  font-size: 18px;
  display: inline-block;
  background: #212431;
  color: #fff;
  line-height: 1;
  padding: 8px 0;
  margin-right: 4px;
  border-radius: 50%;
  text-align: center;
  width: 36px;
  height: 36px;
  transition: 0.3s;
}

#header .profile .social-links a:hover {
  background: #149ddd;
  color: #fff;
  text-decoration: none;
}

#main {
  margin-left: 300px;
}

.container,
.container-fluid {
  padding-left: 30px;
  padding-right: 30px;
}

@media (max-width: 1199px) {
  #header {
    left: -300px;
  }

  #main {
    margin-left: 0;
  }

  .container,
  .container-fluid {
    padding-left: 12px;
    padding-right: 12px;
  }
}


/* Add animation */


#particles-js {
  position: absolute;
  width: 100%;  /* Cover full header width */
  height: 100vh; /* Cover full header height */
  top: 0;
  left: 0;
  z-index: -1;  /* Ensure it stays behind the content */
}

.pheader {
  position: absolute;
  height: 100vh;
  width: 100%;
  z-index: -1;
}

/* Fix huggingface logo issue */

object {
  pointer-events: none; /* Prevents object from blocking clicks */
}

/*--------------------------------------------------------------
# Navigation Menu
--------------------------------------------------------------*/
/* Desktop Navigation */
.nav-menu {
  padding: 30px 0 0 0;
}

.nav-menu * {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-menu>ul>li {
  position: relative;
  white-space: nowrap;
}

.nav-menu a,
.nav-menu a:focus {
  display: flex;
  align-items: center;
  color: #a8a9b4;
  padding: 12px 15px;
  margin-bottom: 8px;
  transition: 0.3s;
  font-size: 15px;
}

.nav-menu a i,
.nav-menu a:focus i {
  font-size: 24px;
  padding-right: 8px;
  color: #6f7180;
}

.nav-menu a:hover,
.nav-menu .active,
.nav-menu .active:focus,
.nav-menu li:hover>a {
  text-decoration: none;
  color: #fff;
}

.nav-menu a:hover i,
.nav-menu .active i,
.nav-menu .active:focus i,
.nav-menu li:hover>a i {
  color: #149ddd;
}

/* Mobile Navigation */
.mobile-nav-toggle {
  position: fixed;
  right: 15px;
  top: 15px;
  z-index: 9998;
  border: 0;
  font-size: 24px;
  transition: all 0.4s;
  outline: none !important;
  background-color: #149ddd;
  color: #fff;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  border-radius: 50px;
  cursor: pointer;
}

.mobile-nav-active {
  overflow: hidden;
}

.mobile-nav-active #header {
  left: 0;
}

/*--------------------------------------------------------------
# Hero Section
--------------------------------------------------------------*/
#hero {
  width: 100%;
  height: 100vh;
  background: url("../img/hero-bg.jpg") top center;
  background-size: cover;
}

#hero:before {
  content: "";
  background: rgba(5, 13, 24, 0.3);
  position: absolute;
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1;
}

#hero .hero-container {
  position: relative;
  z-index: 2;
  min-width: 300px;
}

#hero h1 {
  margin: 0 0 10px 0;
  font-size: 64px;
  font-weight: 700;
  line-height: 56px;
  color: #fff;
}

#hero p {
  color: #fff;
  margin-bottom: 50px;
  font-size: 26px;
  font-family: "Poppins", sans-serif;
}

#hero p span {
  color: #fff;
  padding-bottom: 4px;
  letter-spacing: 1px;
  border-bottom: 3px solid #149ddd;
}

@media (min-width: 1024px) {
  #hero {
    background-attachment: fixed;
  }
}

@media (max-width: 768px) {
  #hero h1 {
    font-size: 28px;
    line-height: 36px;
  }

  #hero h2 {
    font-size: 18px;
    line-height: 24px;
    margin-bottom: 30px;
  }
}

/*--------------------------------------------------------------
# Sections General
--------------------------------------------------------------*/
section {
  padding: 10px 0;
  overflow: hidden;
}

.section-bg {
  background: #f5f8fd;
}

.section-title {
  padding-bottom: 30px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 20px;
  padding-bottom: 20px;
  position: relative;
  color: #173b6c;
}

.section-title h2::after {
  content: "";
  position: absolute;
  display: block;
  width: 50px;
  height: 3px;
  background: #149ddd;
  bottom: 0;
  left: 0;
}

.section-title p {
  margin-bottom: 0;
}

/*--------------------------------------------------------------
# About
--------------------------------------------------------------*/

.about .content h3 {
  font-weight: 700;
  font-size: 26px;
  color: #173b6c;
}

.about .content ul {
  list-style: none;
  padding: 0;
}

.about .content ul li {
  margin-bottom: 10px;
  display: flex;
  align-items: center;
}

.about .content ul strong {
  margin-right: 10px;
}

.about .content ul i {
  font-size: 16px;
  margin-right: 5px;
  color: #149ddd;
  line-height: 0;
}

.about .content p:last-child {
  margin-bottom: 0;
}

/*--------------------------------------------------------------
# Facts
--------------------------------------------------------------*/
.facts {
  padding-bottom: 30px;
}

.facts .count-box {
  padding: 30px;
  width: 100%;
}

.facts .count-box i {
  display: block;
  font-size: 44px;
  color: #149ddd;
  float: left;
  line-height: 0;
}

.facts .count-box span {
  font-size: 48px;
  line-height: 40px;
  display: block;
  font-weight: 700;
  color: #050d18;
  margin-left: 60px;
}

.facts .count-box p {
  padding: 15px 0 0 0;
  margin: 0 0 0 60px;
  font-family: "Raleway", sans-serif;
  font-size: 14px;
  color: #122f57;
}

.facts .count-box a {
  font-weight: 600;
  display: block;
  margin-top: 20px;
  color: #122f57;
  font-size: 15px;
  font-family: "Poppins", sans-serif;
  transition: ease-in-out 0.3s;
}

.facts .count-box a:hover {
  color: #1f5297;
}

/*--------------------------------------------------------------
# Akills
--------------------------------------------------------------*/
.skills .progress {
  height: 60px;
  display: block;
  background: none;
  border-radius: 0;
}

.skills .progress .skill {
  padding: 0;
  margin: 0 0 6px 0;
  text-transform: uppercase;
  display: block;
  font-weight: 600;
  font-family: "Poppins", sans-serif;
  color: #050d18;
}

.skills .progress .skill .val {
  float: right;
  font-style: normal;
}

.skills .progress-bar-wrap {
  background: #dce8f8;
  height: 10px;
}

.skills .progress-bar {
  width: 1px;
  height: 10px;
  transition: 0.9s;
  background-color: #149ddd;
}

/*--------------------------------------------------------------
# Resume
--------------------------------------------------------------*/
.resume .resume-title {
  font-size: 26px;
  font-weight: 700;
  margin-top: 20px;
  margin-bottom: 20px;
  color: #050d18;
}

.resume .resume-item {
  padding: 0 0 20px 20px;
  margin-top: -2px;
  border-left: 2px solid #1f5297;
  position: relative;
}

.resume .resume-item h4 {
  line-height: 18px;
  font-size: 18px;
  font-weight: 600;
  text-transform: uppercase;
  font-family: "Poppins", sans-serif;
  color: #050d18;
  margin-bottom: 10px;
}

.resume .resume-item h5 {
  font-size: 16px;
  background: #e4edf9;
  padding: 5px 15px;
  display: inline-block;
  font-weight: 600;
  margin-bottom: 10px;
}

.resume .resume-item ul {
  padding-left: 20px;
}

.resume .resume-item ul li {
  padding-bottom: 10px;
}

.resume .resume-item:last-child {
  padding-bottom: 0;
}

.resume .resume-item::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50px;
  left: -9px;
  top: 0;
  background: #fff;
  border: 2px solid #1f5297;
}

.resume .resume-item.current::before {

  background: #21971f;

}

/* Custome css for resume */

.icon-header {
  display: flex;
  align-items: center; /* Align the icon and text vertically */
  gap: 10px; /* Space between icon and text */
}

.header-icon {
  width: 50px; /* Adjust icon size */
  height: auto;
}

/*--------------------------------------------------------------
# Portfolio
--------------------------------------------------------------*/
.portfolio .portfolio-item {
  margin-bottom: 30px;
}

.portfolio #portfolio-flters {
  padding: 0;
  margin: 0 auto 35px auto;
  list-style: none;
  text-align: center;
  background: #fff;
  border-radius: 50px;
  padding: 2px 15px;
}

.portfolio #portfolio-flters li {
  cursor: pointer;
  display: inline-block;
  padding: 10px 15px 8px 15px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  text-transform: uppercase;
  color: #272829;
  margin-bottom: 5px;
  transition: all 0.3s ease-in-out;
}

.portfolio #portfolio-flters li:hover,
.portfolio #portfolio-flters li.filter-active {
  color: #149ddd;
}

.portfolio #portfolio-flters li:last-child {
  margin-right: 0;
}

.portfolio .portfolio-wrap {
  transition: 0.3s;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.portfolio .portfolio-wrap::before {
  content: "";
  background: rgba(255, 255, 255, 0.5);
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  transition: all ease-in-out 0.3s;
  z-index: 2;
  opacity: 0;
}

.portfolio .portfolio-wrap .portfolio-links {
  opacity: 1;
  left: 0;
  right: 0;
  bottom: -60px;
  z-index: 3;
  position: absolute;
  transition: all ease-in-out 0.3s;
  display: flex;
  justify-content: center;
}

.portfolio .portfolio-wrap .portfolio-links a {
  color: #fff;
  font-size: 28px;
  text-align: center;
  background: rgba(20, 157, 221, 0.75);
  transition: 0.3s;
  width: 50%;
}

.portfolio .portfolio-wrap .portfolio-links a:hover {
  background: rgba(20, 157, 221, 0.95);
}

.portfolio .portfolio-wrap .portfolio-links a+a {
  border-left: 1px solid #37b3ed;
}

.portfolio .portfolio-wrap:hover::before {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 1;
}

.portfolio .portfolio-wrap:hover .portfolio-links {
  opacity: 1;
  bottom: 0;
}

/*--------------------------------------------------------------
# Portfolio Details
--------------------------------------------------------------*/
.portfolio-details {
  padding-top: 40px;
}

.portfolio-details .portfolio-details-slider img {
  width: 100%;
}

.portfolio-details .portfolio-details-slider .swiper-pagination {
  margin-top: 20px;
  position: relative;
}

.portfolio-details .portfolio-details-slider .swiper-pagination .swiper-pagination-bullet {
  width: 12px;
  height: 12px;
  background-color: #fff;
  opacity: 1;
  border: 1px solid #149ddd;
}

.portfolio-details .portfolio-details-slider .swiper-pagination .swiper-pagination-bullet-active {
  background-color: #149ddd;
}

.portfolio-details .portfolio-info {
  padding: 30px;
  box-shadow: 0px 0 30px rgba(5, 13, 24, 0.08);
}

.portfolio-details .portfolio-info h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid #eee;
}

.portfolio-details .portfolio-info ul {
  list-style: none;
  padding: 0;
  font-size: 15px;
}

.portfolio-details .portfolio-info ul li+li {
  margin-top: 10px;
}

.portfolio-details .portfolio-description {
  padding-top: 30px;
}

.portfolio-details .portfolio-description h2 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 20px;
}

.portfolio-details .portfolio-description p {
  padding: 0;
}

.custom-portfolio-slider {
  max-width: 300px; /* Set the desired maximum width */
  margin: 0 auto;   /* Center the container */
}

.custom-portfolio-slider img {
  width: 100%;
  height: auto;
  display: block;
}

/*--------------------------------------------------------------
# Services
--------------------------------------------------------------*/
.services .icon-box {
  margin-bottom: 20px;
}

.services .icon {
  float: left;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  background: #149ddd;
  border-radius: 50%;
  transition: 0.5s;
  border: 1px solid #149ddd;
}

.services .icon i {
  color: #fff;
  font-size: 24px;
  line-height: 0;
}

.services .icon-box:hover .icon {
  background: #fff;
}

.services .icon-box:hover .icon i {
  color: #149ddd;
}

.services .title {
  margin-left: 80px;
  font-weight: 700;
  margin-bottom: 15px;
  font-size: 18px;
}

.services .title a {
  color: #343a40;
}

.services .title a:hover {
  color: #149ddd;
}

.services .description {
  margin-left: 80px;
  line-height: 24px;
  font-size: 14px;
}

/*--------------------------------------------------------------
# Testimonials
--------------------------------------------------------------*/
.testimonials .testimonials-carousel,
.testimonials .testimonials-slider {
  overflow: hidden;
}

.testimonials .testimonial-item {
  box-sizing: content-box;
  text-align: center;
  min-height: 320px;
}

.testimonials .testimonial-item .testimonial-img {
  width: 90px;
  border-radius: 50%;
  margin: 0 auto;
}

.testimonials .testimonial-item h3 {
  font-size: 18px;
  font-weight: bold;
  margin: 10px 0 5px 0;
  color: #111;
}

.testimonials .testimonial-item h4 {
  font-size: 14px;
  color: #999;
  margin: 0;
}

.testimonials .testimonial-item .quote-icon-left,
.testimonials .testimonial-item .quote-icon-right {
  color: #c3e8fa;
  font-size: 26px;
}

.testimonials .testimonial-item .quote-icon-left {
  display: inline-block;
  left: -5px;
  position: relative;
}

.testimonials .testimonial-item .quote-icon-right {
  display: inline-block;
  right: -5px;
  position: relative;
  top: 10px;
}

.testimonials .testimonial-item p {
  font-style: italic;
  margin: 0 15px 15px 15px;
  padding: 20px;
  background: #fff;
  position: relative;
  margin-bottom: 35px;
  border-radius: 6px;
  box-shadow: 0px 2px 15px rgba(0, 0, 0, 0.1);
}

.testimonials .testimonial-item p::after {
  content: "";
  width: 0;
  height: 0;
  border-top: 20px solid #fff;
  border-right: 20px solid transparent;
  border-left: 20px solid transparent;
  position: absolute;
  bottom: -20px;
  left: calc(50% - 20px);
}

.testimonials .swiper-pagination {
  margin-top: 20px;
  position: relative;
}

.testimonials .swiper-pagination .swiper-pagination-bullet {
  width: 12px;
  height: 12px;
  background-color: #fff;
  opacity: 1;
  border: 1px solid #149ddd;
}

.testimonials .swiper-pagination .swiper-pagination-bullet-active {
  background-color: #149ddd;
}

/*--------------------------------------------------------------
# Contact
--------------------------------------------------------------*/
.contact {
  padding-bottom: 130px;
}

.contact .info {
  padding: 30px;
  background: #fff;
  width: 100%;
  box-shadow: 0 0 24px 0 rgba(0, 0, 0, 0.12);
}

.contact .info i {
  font-size: 20px;
  color: #149ddd;
  float: left;
  width: 44px;
  height: 44px;
  background: #dff3fc;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50px;
  transition: all 0.3s ease-in-out;
}

.contact .info h4 {
  padding: 0 0 0 60px;
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 5px;
  color: #050d18;
}

.contact .info p {
  padding: 0 0 10px 60px;
  margin-bottom: 20px;
  font-size: 14px;
  color: #173b6c;
}

.contact .info .email p {
  padding-top: 5px;
}

.contact .info .social-links {
  padding-left: 60px;
}

.contact .info .social-links a {
  font-size: 18px;
  display: inline-block;
  background: #333;
  color: #fff;
  line-height: 1;
  padding: 8px 0;
  border-radius: 50%;
  text-align: center;
  width: 36px;
  height: 36px;
  transition: 0.3s;
  margin-right: 10px;
}

.contact .info .social-links a:hover {
  background: #149ddd;
  color: #fff;
}

.contact .info .email:hover i,
.contact .info .address:hover i,
.contact .info .phone:hover i {
  background: #149ddd;
  color: #fff;
}

.contact .php-email-form {
  width: 100%;
  padding: 30px;
  background: #fff;
  box-shadow: 0 0 24px 0 rgba(0, 0, 0, 0.12);
}

.contact .php-email-form .form-group {
  padding-bottom: 8px;
}

.contact .php-email-form .validate {
  display: none;
  color: red;
  margin: 0 0 15px 0;
  font-weight: 400;
  font-size: 13px;
}

.contact .php-email-form .error-message {
  display: none;
  color: #fff;
  background: #ed3c0d;
  text-align: left;
  padding: 15px;
  font-weight: 600;
}

.contact .php-email-form .error-message br+br {
  margin-top: 25px;
}

.contact .php-email-form .sent-message {
  display: none;
  color: #fff;
  background: #18d26e;
  text-align: center;
  padding: 15px;
  font-weight: 600;
}

.contact .php-email-form .loading {
  display: none;
  background: #fff;
  text-align: center;
  padding: 15px;
}

.contact .php-email-form .loading:before {
  content: "";
  display: inline-block;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  margin: 0 10px -6px 0;
  border: 3px solid #18d26e;
  border-top-color: #eee;
  animation: animate-loading 1s linear infinite;
}

.contact .php-email-form .form-group {
  margin-bottom: 15px;
}

.contact .php-email-form label {
  padding-bottom: 8px;
}

.contact .php-email-form input,
.contact .php-email-form textarea {
  border-radius: 0;
  box-shadow: none;
  font-size: 14px;
}

.contact .php-email-form input {
  height: 44px;
}

.contact .php-email-form textarea {
  padding: 10px 15px;
}

.contact .php-email-form button[type=submit] {
  background: #149ddd;
  border: 0;
  padding: 10px 24px;
  color: #fff;
  transition: 0.4s;
  border-radius: 4px;
}

.contact .php-email-form button[type=submit]:hover {
  background: #37b3ed;
}

@keyframes animate-loading {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/*--------------------------------------------------------------
# Breadcrumbs
--------------------------------------------------------------*/
.breadcrumbs {
  padding: 20px 0;
  background: #f9f9f9;
}

.breadcrumbs h2 {
  font-size: 26px;
  font-weight: 300;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 15px;
}

.breadcrumbs ol li+li {
  padding-left: 10px;
}

.breadcrumbs ol li+li::before {
  display: inline-block;
  padding-right: 10px;
  color: #0e2442;
  content: "/";
}

@media (max-width: 768px) {
  .breadcrumbs .d-flex {
    display: block !important;
  }

  .breadcrumbs ol {
    display: block;
  }

  .breadcrumbs ol li {
    display: inline-block;
  }
}

/*--------------------------------------------------------------
# Footer
--------------------------------------------------------------*/
#footer {
  padding: 15px;
  color: #f4f6fd;
  font-size: 14px;
  position: fixed;
  left: 0;
  bottom: 0;
  width: 300px;
  z-index: 9999;
  background: #202020;
}

#footer .copyright {
  text-align: center;
}

#footer .credits {
  padding-top: 5px;
  text-align: center;
  font-size: 13px;
  color: #eaebf0;
}

@media (max-width: 1199px) {
  #footer {
    position: static;
    width: auto;
    padding-right: 20px 15px;
  }
}

/*--------------------------------------------------------------
# Divider
--------------------------------------------------------------*/

.section-divider {
  height: 0;
  border-top: 1px solid #DDD;
  text-align: center;
  margin-top: 40px;
  margin-bottom: 40px;
}

.section-divider > span {
  color: #3498db;
  background: #FAFAFA;
  display: inline-block;
  position: relative;
  padding: 0 17px;
  top: -11px;
  font-size: 15px;
}

.div-space-between-devs-publications{
  margin-bottom: 40px;
}

/* Portfolio image sizing utilities */
.portfolio-img-small {
  width: 40% !important;
  height: auto;
}

.portfolio-img-medium {
  width: 80% !important;
  height: auto;
}

/* Projects Section Styling */
.projects-featured {
  margin-bottom: 60px;
  padding-bottom: 40px;
  border-bottom: 2px solid #e0e0e0;
}

.section-subtitle {
  font-size: 20px;
  font-weight: 600;
  color: #173b6c;
  margin-bottom: 30px;
  font-family: "Raleway", sans-serif;
}

.project-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #149ddd;
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  z-index: 10;
}

.portfolio-item.featured .portfolio-wrap {
  box-shadow: 0 4px 15px rgba(20, 157, 221, 0.2);
}/* ====================================
   Modern Portfolio - Custom CSS
   Fast, Clean, Professional Design
   ==================================== */

:root {
  /* Color Palette */
  --primary-color: #0563bb;
  --primary-dark: #044a96;
  --primary-light: #1976d2;
  --secondary-color: #45505b;
  --text-primary: #272829;
  --text-secondary: #626970;
  --text-muted: #8b949e;
  --bg-primary: #ffffff;
  --bg-secondary: #f5f8fd;
  --bg-accent: #f8f9fa;
  --border-color: #dee2e6;
  --shadow-sm: rgba(0, 0, 0, 0.05);
  --shadow-md: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
  
  /* Typography */
  --font-primary: "Open Sans", sans-serif;
  --font-headings: "Raleway", sans-serif;
  --font-monospace: "Fira Code", "Courier New", monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Layout */
  --content-max-width: 960px;
  --content-wide-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

[data-theme="dark"] {
  --primary-color: #409fff;
  --primary-dark: #1976d2;
  --primary-light: #64b5f6;
  --secondary-color: #c9d1d9;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-accent: #21262d;
  --border-color: #30363d;
  --shadow-sm: rgba(0, 0, 0, 0.3);
  --shadow-md: rgba(0, 0, 0, 0.4);
  --shadow-lg: rgba(0, 0, 0, 0.5);
}

/* ====================================
   Enhanced Timeline Component
   ==================================== */

.timeline {
  position: relative;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, 
    transparent 0%, 
    var(--primary-color) 10%, 
    var(--primary-color) 90%, 
    transparent 100%);
}

.timeline-item {
  position: relative;
  padding-left: 70px;
  margin-bottom: var(--spacing-xl);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.timeline-item.aos-animate {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 22px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--primary-color);
  box-shadow: 0 0 0 4px var(--bg-primary),
              0 0 0 6px rgba(var(--primary-color-rgb, 5, 99, 187), 0.1);
  transition: all var(--transition-normal);
  z-index: 2;
}

.timeline-item:hover::before {
  transform: scale(1.2);
  box-shadow: 0 0 0 4px var(--bg-primary),
              0 0 0 8px rgba(var(--primary-color-rgb, 5, 99, 187), 0.2);
}

.timeline-item.current::before {
  background: var(--primary-color);
  animation: pulse-timeline 2s infinite;
}

@keyframes pulse-timeline {
  0%, 100% {
    box-shadow: 0 0 0 4px var(--bg-primary),
                0 0 0 6px rgba(var(--primary-color-rgb, 5, 99, 187), 0.2);
  }
  50% {
    box-shadow: 0 0 0 4px var(--bg-primary),
                0 0 0 10px rgba(var(--primary-color-rgb, 5, 99, 187), 0.4);
  }
}

.timeline-content {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px var(--shadow-sm);
  transition: all var(--transition-normal);
}

.timeline-item:hover .timeline-content {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--shadow-md);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.timeline-logo {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  object-fit: contain;
  background: var(--bg-accent);
  padding: 4px;
}

.timeline-title {
  flex: 1;
}

.timeline-title h4 {
  font-family: var(--font-headings);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.25rem 0;
  line-height: 1.3;
}

.timeline-title h4 a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.timeline-title h4 a:hover {
  color: var(--primary-color);
}

.timeline-institution {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin: 0;
}

.timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  align-items: center;
  margin-top: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.timeline-date {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  background: var(--bg-accent);
  border-radius: 20px;
  font-weight: 500;
}

.timeline-location {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.timeline-current-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.timeline-description {
  margin: var(--spacing-md) 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-highlights {
  margin-top: var(--spacing-md);
}

.timeline-highlights ul {
  margin: var(--spacing-sm) 0 0 0;
  padding-left: 1.25rem;
  list-style: none;
}

.timeline-highlights li {
  position: relative;
  padding-left: 0.5rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

.timeline-highlights li::before {
  content: '▹';
  position: absolute;
  left: -1rem;
  color: var(--primary-color);
  font-weight: bold;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--spacing-md);
}

.timeline-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--bg-accent);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.timeline-tag:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* ====================================
   Enhanced Project Cards (Image Left)
   ==================================== */

.projects-grid {
  max-width: var(--content-wide-width);
  margin: 0 auto;
}

.project-card {
  display: flex;
  gap: var(--spacing-lg);
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: 0 2px 8px var(--shadow-sm);
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(20px);
}

.project-card.aos-animate {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--shadow-md);
  border-color: var(--primary-color);
}

.project-image {
  flex-shrink: 0;
  width: 280px;
  height: 200px;
  border-radius: var(--border-radius);
  overflow: hidden;
  background: var(--bg-accent);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-header {
  margin-bottom: var(--spacing-sm);
}

.project-title {
  font-family: var(--font-headings);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.5rem 0;
  line-height: 1.3;
}

.project-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.project-title a:hover {
  color: var(--primary-color);
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: var(--spacing-md);
}

.tech-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--bg-accent);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  font-family: var(--font-monospace);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: auto;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-accent);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.project-link:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.project-link.primary {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.project-link.primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

/* Featured Project Badge */
.project-card.featured {
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(var(--primary-color-rgb, 5, 99, 187), 0.02) 100%);
}

.project-card.featured::before {
  content: '⭐ Featured';
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  padding: 0.25rem 0.75rem;
  background: var(--primary-color);
  color: white;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ====================================
   Responsive Design
   ==================================== */

@media (max-width: 768px) {
  :root {
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    padding-left: 50px;
  }

  .timeline-item::before {
    left: 12px;
  }

  .timeline-logo {
    width: 40px;
    height: 40px;
  }

  .timeline-title h4 {
    font-size: 1.125rem;
  }

  .project-card {
    flex-direction: column;
    padding: var(--spacing-md);
  }

  .project-image {
    width: 100%;
    height: 180px;
  }

  .project-title {
    font-size: 1.25rem;
  }
}

/* ====================================
   Section Styling
   ==================================== */

.section {
  padding: var(--spacing-xxl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title h2 {
  font-family: var(--font-headings);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
}

.section-title p {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 700px;
  margin: var(--spacing-md) auto 0;
}

/* ====================================
   Smooth Animations
   ==================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Intersection Observer ready classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ====================================
   Performance Optimizations
   ==================================== */

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* GPU acceleration for smooth animations */
.timeline-item,
.project-card,
.timeline-content {
  will-change: transform, opacity;
}

/* Lazy load images */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
  opacity: 1;
}

/* ====================================
   BibTeX Modal
   ==================================== */

/* Modal Overlay */
.bibtex-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.bibtex-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Modal Container */
.bibtex-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  max-width: 800px;
  width: 90%;
  max-height: 85vh;
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), 
              transform var(--transition-normal), 
              visibility var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.bibtex-modal.active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

/* Modal Content */
.bibtex-modal-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

/* Modal Header */
.bibtex-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.bibtex-modal-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-headings);
}

.bibtex-modal-title i {
  color: var(--primary-color);
  margin-right: 0.5rem;
}

.bibtex-modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
}

.bibtex-modal-close:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.bibtex-modal-close:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Modal Body */
.bibtex-modal-body {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
  overflow-x: hidden;
}

.bibtex-code {
  display: block;
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  font-family: var(--font-monospace);
  font-size: 0.875rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
  overflow-wrap: break-word;
  border: 1px solid var(--border-color);
  margin: 0;
  user-select: all;
  -webkit-user-select: all;
  -moz-user-select: all;
  -ms-user-select: all;
}

/* Modal Footer */
.bibtex-modal-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}

.bibtex-copy-btn,
.bibtex-close-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  cursor: pointer;
}

.bibtex-copy-btn {
  background: var(--primary-color);
  color: white;
}

.bibtex-copy-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(5, 99, 187, 0.3);
}

.bibtex-copy-btn.btn-success {
  background: #28a745;
}

.bibtex-copy-btn.btn-danger {
  background: #dc3545;
}

.bibtex-close-btn {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-color);
}

.bibtex-close-btn:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .bibtex-modal {
    width: 95%;
    max-height: 90vh;
  }

  .bibtex-modal-header,
  .bibtex-modal-body,
  .bibtex-modal-footer {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .bibtex-modal-title {
    font-size: 1.1rem;
  }

  .bibtex-code {
    font-size: 0.8rem;
    padding: var(--spacing-sm);
  }

  .bibtex-modal-footer {
    flex-direction: column;
  }

  .bibtex-copy-btn,
  .bibtex-close-btn {
    width: 100%;
  }
}

/* Dark Mode Support */
[data-theme="dark"] .bibtex-modal {
  background: #1e1e1e;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .bibtex-modal-header,
[data-theme="dark"] .bibtex-modal-footer {
  border-color: #3a3a3a;
}

[data-theme="dark"] .bibtex-code {
  background: #2d2d2d;
  color: #d4d4d4;
  border-color: #3a3a3a;
}

[data-theme="dark"] .bibtex-modal-close:hover {
  background-color: #2d2d2d;
}

[data-theme="dark"] .bibtex-close-btn {
  border-color: #3a3a3a;
}

[data-theme="dark"] .bibtex-close-btn:hover {
  background: #2d2d2d;
}

/* Animation for modal content */
@keyframes modalSlideIn {
  from {
    transform: translate(-50%, -48%) scale(0.95);
    opacity: 0;
  }
  to {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}

.bibtex-modal.active {
  animation: modalSlideIn 0.3s ease-out;
}

/* Scrollbar styling for modal body */
.bibtex-modal-body::-webkit-scrollbar {
  width: 8px;
}

.bibtex-modal-body::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 4px;
}

.bibtex-modal-body::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

.bibtex-modal-body::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}
/**
 * Modern Sidebar Styles
 * Clean, professional, and lightweight sidebar design
 */

/* ====== Main Sidebar Container ====== */
#header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 280px;
  z-index: 9997;
  padding: 0;
  background: linear-gradient(180deg, #0a0f1a 0%, #141b2d 100%);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(20, 157, 221, 0.3) transparent;
  box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#header::-webkit-scrollbar {
  width: 4px;
}

#header::-webkit-scrollbar-track {
  background: transparent;
}

#header::-webkit-scrollbar-thumb {
  background: rgba(20, 157, 221, 0.3);
  border-radius: 2px;
}

#header::-webkit-scrollbar-thumb:hover {
  background: rgba(20, 157, 221, 0.5);
}

/* ====== Particles Background ====== */
#header .pheader {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.4;
}

#header #particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
}

/* ====== Profile Section ====== */
#header .profile {
  text-align: center;
  padding: 30px 20px 20px;
  position: relative;
}

/* Profile image with modern styling */
#header .profile img {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid rgba(20, 157, 221, 0.5);
  box-shadow: 0 0 25px rgba(20, 157, 221, 0.2);
  margin-bottom: 12px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

#header .profile img:hover {
  transform: scale(1.05);
  border-color: #64ffda;
  box-shadow: 0 0 35px rgba(100, 255, 218, 0.3);
}

/* Profile name */
#header .profile h1 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin: 0 0 15px;
  font-family: "Raleway", sans-serif;
}

#header .profile h1 a {
  color: #fff;
  text-decoration: none;
  transition: color 0.3s ease;
}

#header .profile h1 a:hover {
  color: #64ffda;
}

/* ====== Social Links ====== */
#header .social-links {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 15px;
}

#header .social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 16px;
  transition: all 0.3s ease;
  text-decoration: none;
}

#header .social-links a:hover {
  background: #149ddd;
  border-color: #149ddd;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(20, 157, 221, 0.4);
}

#header .social-links a object {
  width: 18px;
  height: 18px;
  pointer-events: none;
  filter: brightness(0) invert(1);
  transition: filter 0.3s ease;
}

#header .social-links a:hover object {
  filter: brightness(0) invert(1);
}

/* ====== Navigation Menu ====== */
#header .nav-menu {
  padding: 20px 15px 30px;
}

#header .nav-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

#header .nav-menu li {
  position: relative;
  margin-bottom: 5px;
}

#header .nav-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  font-weight: 500;
  font-family: "Raleway", sans-serif;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

#header .nav-menu a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: #149ddd;
  transform: scaleY(0);
  transition: transform 0.3s ease;
  border-radius: 0 3px 3px 0;
}

#header .nav-menu a:hover {
  color: #fff;
  background: rgba(20, 157, 221, 0.1);
}

#header .nav-menu a:hover::before {
  transform: scaleY(1);
}

#header .nav-menu a.active {
  color: #64ffda;
  background: rgba(100, 255, 218, 0.1);
}

#header .nav-menu a.active::before {
  transform: scaleY(1);
  background: #64ffda;
}

#header .nav-menu a i {
  font-size: 18px;
  min-width: 24px;
  text-align: center;
}

#header .nav-menu a span {
  white-space: nowrap;
}

/* ====== Divider ====== */
#header .sidebar-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  margin: 20px 15px;
}

/* ====== Status/Availability Badge ====== */
.availability-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  margin: 0 20px 20px;
  background: rgba(100, 255, 218, 0.1);
  border: 1px solid rgba(100, 255, 218, 0.2);
  border-radius: 20px;
  font-size: 12px;
  color: #64ffda;
}

.availability-badge .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #64ffda;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(100, 255, 218, 0.4);
  }
  50% {
    opacity: 0.8;
    box-shadow: 0 0 0 6px rgba(100, 255, 218, 0);
  }
}

/* ====== Mobile Navigation Toggle ====== */
.mobile-nav-toggle {
  position: fixed;
  right: 15px;
  top: 15px;
  z-index: 9998;
  border: 0;
  background: rgba(10, 15, 26, 0.9);
  font-size: 24px;
  transition: all 0.4s;
  outline: none !important;
  line-height: 0;
  cursor: pointer;
  border-radius: 8px;
  padding: 10px;
  color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.mobile-nav-toggle:hover {
  background: #149ddd;
}

/* ====== Mobile View ====== */
@media (max-width: 1199px) {
  #header {
    transform: translateX(-100%);
  }
  
  .mobile-nav-active #header {
    transform: translateX(0);
  }
  
  #main {
    margin-left: 0;
  }
}

/* ====== Desktop View ====== */
@media (min-width: 1200px) {
  .mobile-nav-toggle {
    display: none;
  }
  
  #main {
    margin-left: 280px;
  }
}

/* ====== Dark Mode Adjustments ====== */
[data-theme="dark"] #header {
  background: linear-gradient(180deg, #0a0f1a 0%, #141b2d 100%);
}

/* ====== Reduced Motion ====== */
@media (prefers-reduced-motion: reduce) {
  #header .profile img,
  #header .nav-menu a,
  #header .social-links a,
  .availability-badge .status-dot {
    transition: none;
    animation: none;
  }
}
/**
 * Optimized Hero Section Styles
 * Lightweight, modern hero without heavy background images
 */

/* ====== Modern Hero Section ====== */
#hero {
  width: 100%;
  height: 100vh;
  /* Replace heavy image with elegant gradient */
  background: linear-gradient(135deg, #040b14 0%, #0a192f 50%, #112240 100%);
  position: relative;
  overflow: hidden;
}

/* Animated gradient overlay */
#hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(20, 157, 221, 0.08) 0%, transparent 70%);
  z-index: 1;
  animation: pulseGlow 8s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

/* Subtle animated lines/shapes */
#hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(20, 157, 221, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 157, 221, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 1;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(50px);
  }
}

/* Hero content container */
#hero .hero-container {
  position: relative;
  z-index: 10;
  min-width: 300px;
  text-align: center;
}

/* Hero title */
#hero h1 {
  margin: 0 0 15px 0;
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 0.8s ease-out;
}

/* Hero subtitle */
#hero p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-family: "Open Sans", sans-serif;
  font-weight: 300;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

#hero p span {
  color: #64ffda;
  padding-bottom: 4px;
  letter-spacing: 1px;
  border-bottom: 2px solid #149ddd;
  font-weight: 500;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero-scroll-indicator a {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s;
}

.hero-scroll-indicator a:hover {
  color: #64ffda;
}

.hero-scroll-indicator .mouse {
  width: 25px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 20px;
  position: relative;
  margin-bottom: 10px;
}

.hero-scroll-indicator .wheel {
  width: 4px;
  height: 8px;
  background: #64ffda;
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 1.5s ease-in-out infinite;
}

@keyframes scrollWheel {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(15px);
  }
}

.hero-scroll-indicator span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Floating shapes decoration */
.hero-decoration {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(20, 157, 221, 0.2), rgba(100, 255, 218, 0.1));
  filter: blur(1px);
  z-index: 2;
  pointer-events: none;
}

.hero-decoration:nth-child(1) {
  width: 300px;
  height: 300px;
  top: 10%;
  right: -100px;
  animation: float 15s ease-in-out infinite;
}

.hero-decoration:nth-child(2) {
  width: 200px;
  height: 200px;
  bottom: 20%;
  left: -50px;
  animation: float 12s ease-in-out infinite reverse;
}

.hero-decoration:nth-child(3) {
  width: 100px;
  height: 100px;
  top: 40%;
  right: 20%;
  animation: float 10s ease-in-out infinite 2s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(20px, -30px) rotate(5deg);
  }
  50% {
    transform: translate(-10px, 20px) rotate(-3deg);
  }
  75% {
    transform: translate(30px, 10px) rotate(3deg);
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  #hero .hero-container {
    padding: 0 20px;
  }
  
  #hero::after {
    background-size: 30px 30px;
  }
  
  .hero-decoration {
    display: none;
  }
  
  .hero-scroll-indicator {
    bottom: 20px;
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  #hero::before,
  #hero::after,
  .hero-decoration,
  .hero-scroll-indicator .wheel {
    animation: none;
  }
  
  #hero h1,
  #hero p {
    animation: none;
  }
}
/* ========================================================================
   Contact Section - Professional Card-Based Design
   ======================================================================== */

/* Section Layout */
.contact {
  padding: 60px 0;
}

.contact .section-title {
  margin-bottom: 40px;
}

.contact-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}

/* ============================================
   Contact Info Cards Row
   ============================================ */
.contact-info-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact-info-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.contact-info-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.contact-info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #149ddd 0%, #0d7bb5 100%);
  border-radius: 10px;
  flex-shrink: 0;
}

.contact-info-icon i {
  font-size: 22px;
  color: #fff;
}

.contact-info-text h4 {
  margin: 0 0 4px 0;
  font-size: 14px;
  font-weight: 600;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-info-text p {
  margin: 0;
  font-size: 15px;
  color: #1f2937;
  font-weight: 500;
}

.contact-info-text a {
  color: #149ddd;
  text-decoration: none;
  transition: color 0.2s ease;
}

.contact-info-text a:hover {
  color: #0d7bb5;
}

/* ============================================
   Contact Form Card
   ============================================ */
.contact-form-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

/* Decorative accent */
.contact-form-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #149ddd 0%, #0d7bb5 50%, #149ddd 100%);
}

.contact-form-header {
  text-align: center;
  margin-bottom: 32px;
}

.contact-form-header h3 {
  margin: 0 0 8px 0;
  font-size: 24px;
  font-weight: 700;
  color: #1f2937;
}

.contact-form-header p {
  margin: 0;
  font-size: 15px;
  color: #6b7280;
}

/* Form Layout */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Form Fields */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #374151;
  letter-spacing: 0.3px;
}

.form-field label i {
  font-size: 16px;
  color: #149ddd;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  color: #1f2937;
  background: #fafafa;
  transition: all 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: #149ddd;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(20, 157, 221, 0.1);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: #9ca3af;
}

.form-field textarea {
  min-height: 140px;
  resize: vertical;
  line-height: 1.6;
}

/* Field Error State */
.form-field.has-error input,
.form-field.has-error textarea {
  border-color: #ef4444;
  background: #fef2f2;
}

.form-field.has-error input:focus,
.form-field.has-error textarea:focus {
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.form-field.has-error label {
  color: #dc2626;
}

.field-error {
  font-size: 13px;
  color: #dc2626;
  font-weight: 500;
  min-height: 18px;
  display: block;
}

.field-error:empty {
  display: none;
}

/* ============================================
   Submit Button
   ============================================ */
.submit-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 32px;
  background: linear-gradient(135deg, #149ddd 0%, #0d7bb5 100%);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  align-self: center;
  min-width: 200px;
}

.submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(20, 157, 221, 0.35);
}

.submit-btn:active:not(:disabled) {
  transform: translateY(0);
}

.submit-btn:disabled {
  opacity: 0.8;
  cursor: not-allowed;
}

.submit-btn .btn-text {
  display: flex;
  align-items: center;
  gap: 8px;
}

.submit-btn .btn-loading {
  display: none;
  align-items: center;
  gap: 10px;
}

.submit-btn.loading .btn-text {
  display: none;
}

.submit-btn.loading .btn-loading {
  display: flex;
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   Message Container (Success/Error Alerts)
   ============================================ */
#messageContainer {
  margin-bottom: 24px;
}

#messageContainer:empty {
  margin-bottom: 0;
}

#messageContainer .alert {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 24px;
  border-radius: 12px;
  font-size: 15px;
  line-height: 1.5;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Success Alert */
#messageContainer .alert-success {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border: 1px solid #a7f3d0;
  color: #065f46;
}

#messageContainer .alert-success .alert-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: #10b981;
  border-radius: 50%;
  flex-shrink: 0;
}

#messageContainer .alert-success .alert-icon i {
  font-size: 22px;
  color: #fff;
}

/* Error Alert */
#messageContainer .alert-danger {
  background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
  border: 1px solid #fecaca;
  color: #991b1b;
}

#messageContainer .alert-danger .alert-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: #ef4444;
  border-radius: 50%;
  flex-shrink: 0;
}

#messageContainer .alert-danger .alert-icon i {
  font-size: 22px;
  color: #fff;
}

.alert-content {
  flex: 1;
}

.alert-content strong {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
  font-weight: 600;
}

.alert-content p {
  margin: 0;
  opacity: 0.9;
}

/* ============================================
   Map Card
   ============================================ */
.contact-map-card {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.contact-map-card iframe {
  display: block;
  width: 100%;
  border-radius: 16px;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 992px) {
  .contact-info-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .contact-info-card {
    padding: 16px 20px;
  }
}

@media (max-width: 768px) {
  .contact-form-card {
    padding: 28px 20px;
  }
  
  .contact-form-header h3 {
    font-size: 20px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .form-field input,
  .form-field textarea {
    padding: 14px;
    font-size: 16px; /* Prevents zoom on iOS */
  }
  
  .submit-btn {
    width: 100%;
    padding: 16px 24px;
  }
  
  .contact-info-icon {
    width: 44px;
    height: 44px;
  }
  
  .contact-info-icon i {
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  .contact {
    padding: 40px 0;
  }
  
  .contact-form-card {
    padding: 24px 16px;
  }
  
  .contact-form-header {
    margin-bottom: 24px;
  }
  
  #messageContainer .alert {
    padding: 16px;
    flex-direction: column;
    text-align: center;
  }
  
  #messageContainer .alert .alert-icon {
    margin: 0 auto 8px;
  }
}

/* ============================================
   Dark Mode Support
   ============================================ */
[data-theme="dark"] .contact-info-card {
  background: #1f2937;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .contact-info-text h4 {
  color: #9ca3af;
}

[data-theme="dark"] .contact-info-text p {
  color: #f3f4f6;
}

[data-theme="dark"] .contact-info-text a {
  color: #60b8e8;
}

[data-theme="dark"] .contact-form-card {
  background: #1f2937;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .contact-form-header h3 {
  color: #f9fafb;
}

[data-theme="dark"] .contact-form-header p {
  color: #9ca3af;
}

[data-theme="dark"] .form-field label {
  color: #d1d5db;
}

[data-theme="dark"] .form-field input,
[data-theme="dark"] .form-field textarea {
  background: #374151;
  border-color: #4b5563;
  color: #f3f4f6;
}

[data-theme="dark"] .form-field input:focus,
[data-theme="dark"] .form-field textarea:focus {
  border-color: #60b8e8;
  background: #1f2937;
  box-shadow: 0 0 0 4px rgba(96, 184, 232, 0.15);
}

[data-theme="dark"] .form-field input::placeholder,
[data-theme="dark"] .form-field textarea::placeholder {
  color: #6b7280;
}

[data-theme="dark"] .form-field.has-error input,
[data-theme="dark"] .form-field.has-error textarea {
  border-color: #f87171;
  background: rgba(239, 68, 68, 0.1);
}

[data-theme="dark"] .field-error {
  color: #f87171;
}

[data-theme="dark"] #messageContainer .alert-success {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(6, 95, 70, 0.2) 100%);
  border-color: rgba(16, 185, 129, 0.3);
  color: #a7f3d0;
}

[data-theme="dark"] #messageContainer .alert-danger {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.15) 0%, rgba(153, 27, 27, 0.2) 100%);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fecaca;
}

[data-theme="dark"] .contact-map-card {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

/* ============================================
   Accessibility - Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .contact-info-card,
  .submit-btn,
  .form-field input,
  .form-field textarea {
    transition: none;
  }
  
  .spinner {
    animation: none;
  }
  
  #messageContainer .alert {
    animation: none;
  }
}
/**
 * Lightweight Animation Styles
 * Performance-friendly CSS animations
 */

/* ====== Base Animation States ====== */
[data-animate] {
  opacity: 0;
  will-change: opacity, transform;
}

[data-animate].animated {
  opacity: 1;
}

/* ====== Fade Animations ====== */
.animate-fadeIn {
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fadeInDown {
  animation: fadeInDown 0.6s ease-out forwards;
}

.animate-fadeInLeft {
  animation: fadeInLeft 0.6s ease-out forwards;
}

.animate-fadeInRight {
  animation: fadeInRight 0.6s ease-out forwards;
}

/* ====== Scale Animations ====== */
.animate-scaleIn {
  animation: scaleIn 0.5s ease-out forwards;
}

.animate-scaleUp {
  animation: scaleUp 0.5s ease-out forwards;
}

/* ====== Slide Animations ====== */
.animate-slideInUp {
  animation: slideInUp 0.6s ease-out forwards;
}

.animate-slideInDown {
  animation: slideInDown 0.6s ease-out forwards;
}

/* ====== Keyframe Definitions ====== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleUp {
  from {
    opacity: 0;
    transform: scale(0.5);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ====== Hover Animations ====== */
.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.hover-scale {
  transition: transform 0.3s ease;
}

.hover-scale:hover {
  transform: scale(1.05);
}

.hover-glow {
  transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(20, 157, 221, 0.3);
}

/* ====== Continuous Animations ====== */
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-bounce {
  animation: bounce 2s ease infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* ====== Loading States ====== */
.skeleton-loading {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton 1.5s ease-in-out infinite;
}

@keyframes skeleton {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ====== Stagger Animation Delays ====== */
[data-animate-stagger] > *:nth-child(1) { animation-delay: 0ms; }
[data-animate-stagger] > *:nth-child(2) { animation-delay: 100ms; }
[data-animate-stagger] > *:nth-child(3) { animation-delay: 200ms; }
[data-animate-stagger] > *:nth-child(4) { animation-delay: 300ms; }
[data-animate-stagger] > *:nth-child(5) { animation-delay: 400ms; }
[data-animate-stagger] > *:nth-child(6) { animation-delay: 500ms; }
[data-animate-stagger] > *:nth-child(7) { animation-delay: 600ms; }
[data-animate-stagger] > *:nth-child(8) { animation-delay: 700ms; }

/* ====== Button Animations ====== */
.btn-animated {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.btn-animated::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn-animated:hover::after {
  width: 300px;
  height: 300px;
}

/* ====== Link Underline Animation ====== */
.link-animated {
  position: relative;
  text-decoration: none;
}

.link-animated::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background: currentColor;
  transition: width 0.3s ease;
}

.link-animated:hover::after {
  width: 100%;
}

/* ====== Card Tilt Effect ====== */
[data-tilt] {
  transform-style: preserve-3d;
  transition: transform 0.3s ease;
}

/* ====== Reduced Motion ====== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  [data-animate] {
    opacity: 1 !important;
    transform: none !important;
  }
  
  .animate-pulse,
  .animate-float,
  .animate-bounce {
    animation: none !important;
  }
}

/* ====== Dark Mode Adjustments ====== */
[data-theme="dark"] .skeleton-loading {
  background: linear-gradient(90deg, #3a3b3c 25%, #4a4b4c 50%, #3a3b3c 75%);
  background-size: 200% 100%;
}

[data-theme="dark"] .hover-glow:hover {
  box-shadow: 0 0 20px rgba(100, 255, 218, 0.3);
}
/**
 * Responsive Images CSS
 * Ensures all images are properly sized, responsive, and fit nicely in their containers
 */

/* =================================================================
   Base Image Reset
   ================================================================= */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* =================================================================
   Profile Image Optimization
   ================================================================= */
.profile-img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--accent-color, #149ddd);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(20, 157, 221, 0.3);
}

/* Sidebar profile image */
#header .profile img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
}

/* =================================================================
   Portfolio/Project Card Images
   ================================================================= */
.portfolio-item img,
.project-card img,
.portfolio-wrap img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center top;
  transition: transform 0.4s ease, filter 0.3s ease;
  border-radius: 8px 8px 0 0;
}

.portfolio-item:hover img,
.project-card:hover img,
.portfolio-wrap:hover img {
  transform: scale(1.05);
}

/* Portfolio card container */
.portfolio-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--card-bg, #1a1a2e);
}

/* Latest projects section images */
.latest-project-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: center;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.latest-project-card:hover img {
  transform: scale(1.03);
}

/* =================================================================
   Company/Logo Images
   ================================================================= */
.company-logo,
.logo-img,
.organization-logo {
  max-width: 150px;
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(0);
  transition: filter 0.3s ease, transform 0.3s ease;
}

.company-logo:hover,
.logo-img:hover,
.organization-logo:hover {
  filter: brightness(1.1);
  transform: scale(1.05);
}

/* Experience section logos */
.resume-item .company-logo {
  max-width: 100px;
  max-height: 60px;
  margin-bottom: 10px;
}

/* Timeline logos */
.timeline-item .logo-img {
  width: 50px;
  height: 50px;
  object-fit: contain;
  border-radius: 8px;
  background: #fff;
  padding: 5px;
}

/* =================================================================
   Certification/Award Images
   ================================================================= */
.certification-img,
.award-img {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.certification-img:hover,
.award-img:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* =================================================================
   Testimonial Images
   ================================================================= */
.testimonial-img,
.testimonials .testimonial-img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--accent-color, #149ddd);
}

/* =================================================================
   Gallery/Lightbox Images
   ================================================================= */
.gallery-img,
.lightbox-img {
  width: 100%;
  height: auto;
  cursor: pointer;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.gallery-img:hover,
.lightbox-img:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

/* =================================================================
   Project Detail Page Images
   ================================================================= */
.project-detail-img,
.portfolio-details-slider img {
  width: 100%;
  max-height: 500px;
  object-fit: contain;
  background: var(--bg-secondary, #1f1f38);
  border-radius: 8px;
}

.project-screenshot {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  margin-bottom: 1rem;
}

/* =================================================================
   Background Images (for cards/sections)
   ================================================================= */
.bg-image-cover {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.bg-image-contain {
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}

/* =================================================================
   Lazy Loading States
   ================================================================= */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s ease-in;
}

img[loading="lazy"].loaded,
img[loading="lazy"]:not([data-src]) {
  opacity: 1;
}

/* Placeholder/skeleton for loading images */
.img-placeholder {
  background: linear-gradient(
    90deg,
    var(--bg-secondary, #1a1a2e) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    var(--bg-secondary, #1a1a2e) 75%
  );
  background-size: 200% 100%;
  animation: img-shimmer 1.5s infinite;
  border-radius: 8px;
}

@keyframes img-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* =================================================================
   Aspect Ratio Containers (prevents layout shift)
   ================================================================= */
.aspect-ratio-16-9 {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.aspect-ratio-4-3 {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.aspect-ratio-1-1 {
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.aspect-ratio-16-9 img,
.aspect-ratio-4-3 img,
.aspect-ratio-1-1 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* =================================================================
   WebP Support with Fallback
   ================================================================= */
.webp-support picture img {
  width: 100%;
  height: auto;
}

/* =================================================================
   Responsive Image Sizes
   ================================================================= */
@media (max-width: 992px) {
  .profile-img,
  #header .profile img {
    width: 100px;
    height: 100px;
  }
  
  .portfolio-item img,
  .project-card img {
    height: 180px;
  }
  
  .company-logo,
  .logo-img {
    max-width: 120px;
    max-height: 60px;
  }
}

@media (max-width: 768px) {
  .profile-img,
  #header .profile img {
    width: 80px;
    height: 80px;
  }
  
  .portfolio-item img,
  .project-card img {
    height: 160px;
  }
  
  .testimonial-img {
    width: 60px;
    height: 60px;
  }
  
  .company-logo,
  .logo-img {
    max-width: 100px;
    max-height: 50px;
  }
  
  .project-detail-img,
  .portfolio-details-slider img {
    max-height: 350px;
  }
}

@media (max-width: 576px) {
  .portfolio-item img,
  .project-card img {
    height: 140px;
  }
  
  .certification-img,
  .award-img {
    max-width: 100%;
  }
  
  .project-detail-img,
  .portfolio-details-slider img {
    max-height: 250px;
  }
}

/* =================================================================
   Print Optimization
   ================================================================= */
@media print {
  img {
    max-width: 100% !important;
    page-break-inside: avoid;
  }
  
  .portfolio-item img,
  .project-card img {
    height: auto;
  }
}

/* =================================================================
   High DPI/Retina Support
   ================================================================= */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .profile-img {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* =================================================================
   Error State for Broken Images
   ================================================================= */
img.error,
img[src=""],
img:not([src]) {
  background: var(--bg-secondary, #1a1a2e);
  position: relative;
  min-height: 100px;
}

img.error::after {
  content: "Image not available";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text-muted, #888);
  font-size: 0.875rem;
}
/**
 * Section Headers Fix
 * Ensures all section headers are consistently aligned across different screen sizes
 */

/* ====================================
   Base Section Title Styling
   ==================================== */
.section-title {
  padding-bottom: 30px;
  text-align: left;
  width: 100%;
}

.section-title h2 {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 20px;
  padding-bottom: 20px;
  position: relative;
  color: #173b6c;
  display: inline-block;
}

.section-title h2::after {
  content: "";
  position: absolute;
  display: block;
  width: 50px;
  height: 3px;
  background: #149ddd;
  bottom: 0;
  left: 0;
}

.section-title p {
  margin-bottom: 0;
  color: #6c757d;
  font-size: 1rem;
  line-height: 1.6;
  max-width: 800px;
}

/* ====================================
   Resume/Section Sub-titles (Education, Experience, etc.)
   ==================================== */
.resume-title,
h3.resume-title,
.section h3 {
  font-size: 24px;
  font-weight: 700;
  color: #050d18;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #149ddd;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
}

.resume-title i,
.section h3 i {
  color: #149ddd;
  font-size: 1.2em;
}

/* ====================================
   Fix Container Alignment Issues
   ==================================== */
section .container {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
}

section .row {
  margin-right: 0;
  margin-left: 0;
  width: 100%;
}

section .col-12 {
  padding-right: 15px;
  padding-left: 15px;
}

/* ====================================
   Volunteering Section Specific Fix
   ==================================== */
#volunteering .section-title h2 {
  margin-bottom: 10px;
}

#volunteering .section-title p {
  margin-bottom: 20px;
}

#volunteering h3 {
  font-size: 22px;
  font-weight: 700;
  color: #050d18;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 15px;
}

#volunteering h3 i {
  color: #ffc107;
  font-size: 1.1em;
}

/* ====================================
   Ensure Consistent Padding in Main Content
   ==================================== */
#main {
  margin-left: 300px;
  padding: 0;
}

#main section {
  padding: 60px 0;
}

#main section.section-bg {
  background: #f5f8fd;
}

/* ====================================
   Responsive Adjustments
   ==================================== */
@media (max-width: 1199px) {
  #main {
    margin-left: 0;
  }
  
  .section-title h2 {
    font-size: 28px;
  }
  
  .resume-title,
  h3.resume-title,
  .section h3 {
    font-size: 22px;
  }
}

@media (max-width: 992px) {
  section .container {
    max-width: 100%;
    padding-right: 20px;
    padding-left: 20px;
  }
  
  .section-title h2 {
    font-size: 26px;
  }
  
  .section-title p {
    font-size: 0.95rem;
  }
  
  .resume-title,
  h3.resume-title,
  .section h3 {
    font-size: 20px;
  }
  
  #main section {
    padding: 50px 0;
  }
}

@media (max-width: 768px) {
  .section-title {
    padding-bottom: 20px;
  }
  
  .section-title h2 {
    font-size: 24px;
    padding-bottom: 15px;
    margin-bottom: 15px;
  }
  
  .section-title p {
    font-size: 0.9rem;
  }
  
  .resume-title,
  h3.resume-title,
  .section h3 {
    font-size: 18px;
    gap: 8px;
  }
  
  #main section {
    padding: 40px 0;
  }
  
  section .container {
    padding-right: 15px;
    padding-left: 15px;
  }
}

@media (max-width: 576px) {
  .section-title h2 {
    font-size: 22px;
  }
  
  .resume-title,
  h3.resume-title,
  .section h3 {
    font-size: 17px;
    flex-wrap: wrap;
  }
  
  #main section {
    padding: 30px 0;
  }
}

/* ====================================
   Dark Mode Support
   ==================================== */
[data-theme="dark"] .section-title h2 {
  color: #ffffff;
}

[data-theme="dark"] .section-title p {
  color: #a4b1c3;
}

[data-theme="dark"] .resume-title,
[data-theme="dark"] h3.resume-title,
[data-theme="dark"] .section h3 {
  color: #ffffff;
  border-bottom-color: #149ddd;
}

[data-theme="dark"] #main section.section-bg {
  background: #1a1f25;
}
/**
 * Publications Component Styles
 * Modern styling for the publications section with filtering and search
 */

/* ====== Filter Controls ====== */
.publications-filters {
  background: var(--bg-secondary, #f5f8fb);
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.publications-filters .form-control,
.publications-filters .form-select {
  border-radius: 6px;
  border-color: #dee2e6;
}

.publications-filters .form-control:focus,
.publications-filters .form-select:focus {
  border-color: #149ddd;
  box-shadow: 0 0 0 0.2rem rgba(20, 157, 221, 0.25);
}

.publications-filters .input-group-text {
  background: #fff;
  border-color: #dee2e6;
}

.pub-count {
  font-size: 0.9rem;
  color: #6c757d;
  font-weight: 500;
  display: inline-block;
  white-space: nowrap;
}

/* Reset Filter Button */
#pub-reset-filters {
  transition: all 0.3s ease;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

#pub-reset-filters:hover {
  background-color: #6c757d;
  border-color: #6c757d;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

#pub-reset-filters:active {
  transform: translateY(0);
}

#pub-reset-filters.btn-success {
  background-color: #28a745;
  border-color: #28a745;
  color: white;
}

#pub-reset-filters i {
  transition: transform 0.3s ease;
}

#pub-reset-filters:hover i {
  transform: rotate(-180deg);
}

/* ====== Publication Cards ====== */
.publications-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.publication-card {
  background: #fff;
  border-radius: 10px;
  padding: 1.5rem;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  border-left: 4px solid #149ddd;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

/* Type-based border colors */
.publication-card.pub-type-journal {
  border-left-color: #28a745;
}

.publication-card.pub-type-conference {
  border-left-color: #149ddd;
}

.publication-card.pub-type-workshop {
  border-left-color: #6f42c1;
}

.publication-card.pub-type-preprint {
  border-left-color: #fd7e14;
}

/* Publication Header */
.pub-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.pub-year {
  background: #149ddd;
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.pub-venue {
  background: #e9ecef;
  color: #495057;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* Publication Title */
.pub-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.pub-title a {
  color: #272829;
  text-decoration: none;
  transition: color 0.2s;
}

.pub-title a:hover {
  color: #149ddd;
}

/* Publication Authors */
.pub-authors {
  color: #6c757d;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.pub-authors strong {
  color: #149ddd;
  font-weight: 600;
}

/* Publication Venue Full */
.pub-venue-full {
  font-style: italic;
  color: #6c757d;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* Publication Links */
.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.pub-links .btn {
  font-size: 0.85rem;
  padding: 0.35rem 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* BibTeX Section */
.pub-bibtex {
  margin-top: 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  padding: 1rem;
  position: relative;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.3s ease-out;
  border: 1px solid #e9ecef;
}

.pub-bibtex.show {
  max-height: 500px;
  opacity: 1;
  padding: 1rem;
  margin-top: 1rem;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* BibTeX Header */
.bibtex-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #dee2e6;
}

.bibtex-label {
  font-weight: 600;
  color: #495057;
  font-size: 0.9rem;
}

.pub-bibtex pre {
  margin: 0;
  white-space: pre-wrap;
  word-wrap: break-word;
  font-size: 0.75rem;
  max-height: 200px;
  overflow-y: auto;
  line-height: 1.5;
  background: #fff;
  padding: 1rem;
  border-radius: 6px;
  border: 1px solid #e9ecef;
}

.pub-bibtex code {
  color: #495057;
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Monaco', monospace;
  font-size: 0.75rem;
}

.pub-bibtex .copy-bibtex {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  transition: all 0.2s ease;
}

.pub-bibtex .copy-bibtex:hover {
  transform: scale(1.02);
}

.pub-bibtex .copy-bibtex.copied {
  background-color: #28a745 !important;
  border-color: #28a745 !important;
  color: white !important;
}

/* Cite button states */
.cite-btn {
  transition: all 0.2s ease;
  position: relative;
}

.cite-btn:hover {
  background-color: #149ddd;
  border-color: #149ddd;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(20, 157, 221, 0.3);
}

.cite-btn:active {
  transform: translateY(0);
}

.cite-btn.active {
  background-color: #149ddd;
  border-color: #149ddd;
  color: white;
  box-shadow: 0 0 0 0.2rem rgba(20, 157, 221, 0.25);
}

.cite-btn.btn-danger {
  animation: shakeError 0.5s ease;
}

@keyframes shakeError {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* ====== Year Groups ====== */
.year-group {
  margin-bottom: 2.5rem;
}

.year-header {
  font-size: 1.5rem;
  font-weight: 700;
  color: #272829;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #149ddd;
  display: inline-block;
}

/* ====== Featured Publications ====== */
.featured-publications {
  background: linear-gradient(135deg, #fff9e6 0%, #fff 100%);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.featured-publications .section-subtitle {
  margin-bottom: 1.5rem;
}

.featured-publications .publication-card {
  border-left-color: #ffc107;
}

/* ====== Section Subtitle ====== */
.section-subtitle {
  font-size: 1.2rem;
  font-weight: 600;
  color: #272829;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ====== Responsive Design ====== */
@media (max-width: 768px) {
  .publication-card {
    padding: 1rem;
  }

  .pub-title {
    font-size: 1rem;
  }

  .pub-links {
    flex-direction: column;
  }

  .pub-links .btn {
    width: 100%;
    justify-content: center;
  }

  .publications-filters .row > div {
    margin-bottom: 0.5rem;
  }
}

/* ====== Dark Mode Support ====== */
[data-theme="dark"] .publications-filters {
  background: var(--dark-bg-secondary, #242526);
}

[data-theme="dark"] .publication-card {
  background: var(--dark-bg-secondary, #242526);
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .pub-title a {
  color: var(--dark-text-primary, #e4e6eb);
}

[data-theme="dark"] .pub-title a:hover {
  color: #149ddd;
}

[data-theme="dark"] .pub-authors {
  color: var(--dark-text-secondary, #b0b3b8);
}

[data-theme="dark"] .pub-venue-full {
  color: var(--dark-text-secondary, #b0b3b8);
}

[data-theme="dark"] .pub-venue {
  background: #3a3b3c;
  color: #e4e6eb;
}

[data-theme="dark"] .year-header {
  color: var(--dark-text-primary, #e4e6eb);
}

[data-theme="dark"] .pub-bibtex {
  background: #3a3b3c;
}

[data-theme="dark"] .pub-bibtex code {
  color: #e4e6eb;
}

[data-theme="dark"] .featured-publications {
  background: linear-gradient(135deg, #3a3b3c 0%, #242526 100%);
}

[data-theme="dark"] .publications-filters .form-control,
[data-theme="dark"] .publications-filters .form-select {
  background: #3a3b3c;
  border-color: #4a4b4c;
  color: #e4e6eb;
}

[data-theme="dark"] .publications-filters .input-group-text {
  background: #3a3b3c;
  border-color: #4a4b4c;
  color: #e4e6eb;
}
/**
 * Neural Network Visualization - Manim Style
 * Clean, professional neural network banner
 */

/* ====== Hero Section ====== */
#hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, #040b14 0%, #0a192f 50%, #112240 100%);
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(20, 157, 221, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(79, 195, 247, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

/* ====== Centered Layout ====== */
#hero .hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 20px;
  position: relative;
  z-index: 10;
  gap: 25px;
}

/* ====== Digit Selector ====== */
.nn-digit-selector {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.nn-selector-label {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 500;
}

.nn-digit-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.nn-digit-btn {
  width: 42px;
  height: 42px;
  border: 2px solid rgba(79, 195, 247, 0.3);
  background: rgba(79, 195, 247, 0.05);
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.1rem;
  font-weight: 600;
  font-family: 'Roboto Mono', monospace;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.nn-digit-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79, 195, 247, 0.2) 0%, rgba(76, 175, 80, 0.2) 100%);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.nn-digit-btn:hover {
  border-color: rgba(79, 195, 247, 0.6);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(79, 195, 247, 0.2);
}

.nn-digit-btn:hover::before {
  opacity: 1;
}

.nn-digit-btn.active {
  border-color: #4caf50;
  background: rgba(76, 175, 80, 0.15);
  color: #4caf50;
  box-shadow: 0 0 20px rgba(76, 175, 80, 0.3);
}

.nn-digit-btn.active::before {
  opacity: 1;
  background: linear-gradient(135deg, rgba(76, 175, 80, 0.2) 0%, rgba(76, 175, 80, 0.1) 100%);
}

.nn-digit-btn:active {
  transform: translateY(0);
}

/* ====== Neural Network Container ====== */
.nn-visual {
  width: 580px;
  height: 280px;
  position: relative;
  order: 2;
}

.nn-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* ====== Input Grid (MNIST-style) ====== */
.nn-input-cell {
  transition: fill-opacity 0.3s ease;
}

/* ====== Network Nodes ====== */
.nn-node {
  transform-origin: center;
  will-change: opacity, transform, fill, filter;
}

.nn-ready .nn-node {
  opacity: 1;
}

/* Layer stagger for entrance animation */
.nn-ready .nn-layer-0 { transition-delay: 0.1s; }
.nn-ready .nn-layer-1 { transition-delay: 0.15s; }
.nn-ready .nn-layer-2 { transition-delay: 0.2s; }
.nn-ready .nn-layer-3 { transition-delay: 0.25s; }

/* ====== Connections ====== */
.nn-connection {
  will-change: opacity, stroke, stroke-width;
  pointer-events: none;
}

.nn-input-connection {
  stroke-dasharray: 4 2;
}

/* ====== Signal Animation ====== */
.nn-signal {
  pointer-events: none;
  will-change: cx, cy;
}

/* ====== Output Labels ====== */
.nn-output-label {
  transition: fill 0.3s ease, font-weight 0.3s ease;
  user-select: none;
  pointer-events: none;
}

/* ====== Scroll Indicator ====== */
.hero-scroll-indicator {
  position: absolute;
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  opacity: 0;
  animation: fadeIn 0.6s ease 2s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

.hero-scroll-indicator a {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: color 0.3s ease;
}

.hero-scroll-indicator a:hover {
  color: #4fc3f7;
}

.hero-scroll-indicator .mouse {
  width: 20px;
  height: 32px;
  border: 2px solid currentColor;
  border-radius: 10px;
  position: relative;
  margin-bottom: 5px;
}

.hero-scroll-indicator .wheel {
  width: 3px;
  height: 6px;
  background: currentColor;
  border-radius: 2px;
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollWheel 1.5s ease-in-out infinite;
}

@keyframes scrollWheel {
  0%, 100% { 
    opacity: 1; 
    transform: translateX(-50%) translateY(0); 
  }
  50% { 
    opacity: 0.3; 
    transform: translateX(-50%) translateY(8px); 
  }
}

.hero-scroll-indicator span {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* ====== Responsive Design ====== */
@media (max-width: 992px) {
  .nn-visual {
    width: 500px;
    height: 240px;
  }
  
  .nn-digit-btn {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }
}

@media (max-width: 768px) {
  #hero .hero-container {
    gap: 20px;
  }
  
  .nn-visual {
    width: 420px;
    height: 200px;
  }
  
  .nn-digit-btn {
    width: 36px;
    height: 36px;
    font-size: 0.95rem;
  }
  
  .nn-digit-buttons {
    gap: 6px;
  }
  
  .nn-selector-label {
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .nn-visual {
    width: 320px;
    height: 160px;
  }
  
  .nn-digit-btn {
    width: 32px;
    height: 32px;
    font-size: 0.85rem;
    border-radius: 6px;
  }
  
  .nn-digit-buttons {
    gap: 5px;
  }
  
  .hero-scroll-indicator {
    bottom: 15px;
  }
}

/* ====== Reduced Motion ====== */
@media (prefers-reduced-motion: reduce) {
  .nn-node,
  .nn-connection,
  .nn-input-cell,
  .nn-output-label {
    transition: none !important;
  }
  
  .nn-signal {
    display: none;
  }
  
  .hero-scroll-indicator {
    opacity: 1;
    animation: none;
  }
  
  .hero-scroll-indicator .wheel {
    animation: none;
  }
}

/* ====== Dark Mode Adjustments ====== */
[data-theme="dark"] #hero {
  background: linear-gradient(135deg, #020508 0%, #050d17 50%, #0a1628 100%);
}

[data-theme="dark"] #hero::before {
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(20, 157, 221, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(79, 195, 247, 0.02) 0%, transparent 50%);
}

/* ====== Animation Optimization ====== */
.nn-visual {
  contain: layout style paint;
}

.nn-svg * {
  shape-rendering: geometricPrecision;
}
/**
 * Dark Mode Styles
 * Override variables and specific elements for dark theme
 */

/* ====== CSS Custom Properties for Theming ====== */
:root {
  /* Light theme (default) */
  --primary: #149ddd;
  --primary-hover: #37b3ed;
  --primary-dark: #0d6efd;
  --text-primary: #272829;
  --text-secondary: #6c757d;
  --text-muted: #858585;
  --bg-primary: #ffffff;
  --bg-secondary: #f5f8fb;
  --bg-card: #ffffff;
  --bg-sidebar: #040b14;
  --border-color: #dee2e6;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
  /* Dark theme */
  --primary: #149ddd;
  --primary-hover: #37b3ed;
  --text-primary: #e4e6eb;
  --text-secondary: #b0b3b8;
  --text-muted: #8a8d91;
  --bg-primary: #18191a;
  --bg-secondary: #242526;
  --bg-card: #242526;
  --bg-sidebar: #040b14;
  --border-color: #3a3b3c;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
}

/* ====== Theme Toggle Button ====== */
.theme-toggle {
  position: fixed;
  bottom: 70px;
  right: 15px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 996;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background: var(--primary-hover);
  transform: scale(1.1);
}

.theme-toggle i {
  font-size: 20px;
}

/* Hide icon based on theme */
[data-theme="light"] .theme-toggle .bi-sun-fill,
.theme-toggle .bi-sun-fill {
  display: none;
}

[data-theme="light"] .theme-toggle .bi-moon-fill,
.theme-toggle .bi-moon-fill {
  display: block;
}

[data-theme="dark"] .theme-toggle .bi-moon-fill {
  display: none;
}

[data-theme="dark"] .theme-toggle .bi-sun-fill {
  display: block;
}

/* ====== Base Element Overrides ====== */
[data-theme="dark"] body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

[data-theme="dark"] a {
  color: var(--primary);
}

[data-theme="dark"] a:hover {
  color: var(--primary-hover);
}

/* ====== Header / Sidebar ====== */
[data-theme="dark"] #header {
  background: var(--bg-sidebar);
}

/* ====== Main Content Area ====== */
[data-theme="dark"] #main {
  background: var(--bg-primary);
}

/* ====== Section Backgrounds ====== */
[data-theme="dark"] .section-bg {
  background: var(--bg-secondary);
}

/* ====== Section Titles ====== */
[data-theme="dark"] .section-title h2 {
  color: var(--text-primary);
}

[data-theme="dark"] .section-title p {
  color: var(--text-secondary);
}

/* ====== Cards and Boxes ====== */
[data-theme="dark"] .card,
[data-theme="dark"] .portfolio-wrap,
[data-theme="dark"] .resume-item {
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

/* ====== Forms ====== */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
  background: var(--bg-secondary);
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 0 0 0.2rem rgba(20, 157, 221, 0.25);
}

[data-theme="dark"] .form-control::placeholder {
  color: var(--text-muted);
}

/* ====== Portfolio Section ====== */
[data-theme="dark"] .portfolio-wrap {
  background: var(--bg-card);
}

[data-theme="dark"] .portfolio-wrap .portfolio-info {
  background: rgba(0, 0, 0, 0.8);
}

[data-theme="dark"] .portfolio-wrap .portfolio-info h4 {
  color: #fff;
}

[data-theme="dark"] .portfolio-wrap .portfolio-info p {
  color: rgba(255, 255, 255, 0.7);
}

/* ====== About Section ====== */
[data-theme="dark"] .about .content h3 {
  color: var(--text-primary);
}

[data-theme="dark"] .about .content p {
  color: var(--text-secondary);
}

/* ====== Resume Section ====== */
[data-theme="dark"] .resume .resume-title {
  color: var(--text-primary);
}

[data-theme="dark"] .resume .resume-item h4 {
  color: var(--text-primary);
}

[data-theme="dark"] .resume .resume-item h5 {
  color: var(--text-secondary);
}

[data-theme="dark"] .resume .resume-item p {
  color: var(--text-secondary);
}

[data-theme="dark"] .resume .resume-item ul li {
  color: var(--text-secondary);
}

/* ====== Volunteering Section ====== */
[data-theme="dark"] .volunteer-card {
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .volunteer-card .volunteer-title {
  color: var(--text-primary);
}

[data-theme="dark"] .volunteer-card .volunteer-description {
  color: var(--text-secondary);
}

/* ====== Travel / Map Section ====== */
[data-theme="dark"] #countries-visited {
  background: var(--bg-secondary);
}

[data-theme="dark"] #countries-visited h2 {
  color: var(--text-primary);
}

[data-theme="dark"] #countries-visited p {
  color: var(--text-secondary);
}

/* ====== Contact Section ====== */
[data-theme="dark"] .contact {
  background: var(--bg-primary);
}

[data-theme="dark"] .contact .info {
  background: var(--bg-card);
}

[data-theme="dark"] .contact .info h4 {
  color: var(--text-primary);
}

[data-theme="dark"] .contact .info p {
  color: var(--text-secondary);
}

[data-theme="dark"] .contact form {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: 8px;
}

/* ====== Footer ====== */
[data-theme="dark"] #footer {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

/* ====== Back to Top Button ====== */
[data-theme="dark"] .back-to-top {
  background: var(--primary);
}

/* ====== Breadcrumbs ====== */
[data-theme="dark"] .breadcrumbs {
  background: var(--bg-secondary);
}

[data-theme="dark"] .breadcrumbs h2 {
  color: var(--text-primary);
}

[data-theme="dark"] .breadcrumbs ol li {
  color: var(--text-secondary);
}

/* ====== Badges ====== */
[data-theme="dark"] .badge.bg-light {
  background: var(--bg-secondary) !important;
  color: var(--text-primary) !important;
}

/* ====== Code blocks ====== */
[data-theme="dark"] pre,
[data-theme="dark"] code {
  background: #1e1e1e;
  color: #d4d4d4;
}

[data-theme="dark"] pre.prettyprint {
  background: #1e1e1e !important;
  border-color: var(--border-color) !important;
}

/* ====== Scrollbar ====== */
[data-theme="dark"] ::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
  background: #4a4b4c;
  border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
  background: #5a5b5c;
}

/* ====== Transition for smooth theme switching ====== */
body,
#main,
.section-bg,
.card,
.portfolio-wrap,
.resume-item,
.form-control,
.form-select,
.btn {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
/**
 * Enhanced Button & Interactive Element Styles
 * Works with GSAP for micro-animations
 */

/* ====== Base Button Enhancements ====== */
.btn {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  transform-origin: center;
  will-change: transform;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
  width: 300%;
  height: 300%;
}

/* Primary button glow effect */
.btn-primary,
.btn[type="submit"] {
  box-shadow: 0 4px 15px rgba(20, 157, 221, 0.3);
}

.btn-primary:hover,
.btn[type="submit"]:hover {
  box-shadow: 0 6px 25px rgba(20, 157, 221, 0.4);
}

/* ====== Social Link Animations ====== */
.social-links a {
  position: relative;
  transition: all 0.3s ease;
  transform-origin: center;
  will-change: transform;
}

.social-links a::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 157, 221, 0.3) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.social-links a:hover::after {
  opacity: 1;
}

/* ====== Navigation Link Effects ====== */
.nav-menu a {
  position: relative;
  transition: all 0.3s ease;
}

.nav-menu a::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #149ddd, #4fc3f7);
  transition: width 0.3s ease;
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
  width: 100%;
}

/* ====== Card Hover States ====== */
.highlight-item,
.portfolio-item {
  transition: all 0.3s ease;
  will-change: transform, box-shadow;
}

.highlight-item {
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(20, 157, 221, 0.1);
}

.highlight-item:hover {
  border-color: rgba(20, 157, 221, 0.3);
  background: rgba(20, 157, 221, 0.05);
}

/* ====== Scroll Progress Bar ====== */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #149ddd, #0563bb, #4fc3f7);
  z-index: 9999;
  transform-origin: left;
}

/* ====== Section Reveal Preparation ====== */
.reveal-fade {
  opacity: 0;
}

.reveal-slide-up {
  opacity: 0;
  transform: translateY(30px);
}

.reveal-slide-left {
  opacity: 0;
  transform: translateX(-30px);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
}

/* When JS is disabled, show content normally */
@media (scripting: none) {
  .reveal-fade,
  .reveal-slide-up,
  .reveal-slide-left,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }
}

/* ====== Icon Animations ====== */
.bi, .bx, .ai {
  transition: transform 0.3s ease;
}

a:hover .bi,
a:hover .bx,
button:hover .bi,
button:hover .bx {
  transform: scale(1.1);
}

/* ====== Form Input Focus Effects ====== */
.form-control,
.form-select {
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.form-control:focus,
.form-select:focus {
  border-color: #149ddd;
  box-shadow: 0 0 0 4px rgba(20, 157, 221, 0.1);
}

/* ====== Back to Top Button ====== */
.back-to-top {
  transition: all 0.3s ease;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(20, 157, 221, 0.4);
}

/* ====== Loading Shimmer for Dynamic Content ====== */
.loading-shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ====== Reduced Motion ====== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .reveal-fade,
  .reveal-slide-up,
  .reveal-slide-left,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }
  
  #scroll-progress {
    display: none;
  }
}

/* ====== Dark Mode Adjustments ====== */
[data-theme="dark"] .highlight-item {
  background: rgba(0, 0, 0, 0.2);
  border-color: rgba(20, 157, 221, 0.2);
}

[data-theme="dark"] .highlight-item:hover {
  background: rgba(20, 157, 221, 0.1);
  border-color: rgba(20, 157, 221, 0.4);
}

[data-theme="dark"] .btn::before {
  background: rgba(255, 255, 255, 0.05);
}
/**
 * Site Enhancements CSS
 * - Page transitions
 * - Loading screen
 * - Back-to-top button
 * - Section dividers
 * - Skills animations
 * - Contact form enhancements
 * - Portfolio filtering effects
 * - Theme toggle
 */

/* ============================================
   1. PAGE LOADING SCREEN
   ============================================ */
.page-loader {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #040b14 0%, #0a192f 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-content {
  text-align: center;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  position: relative;
  margin: 0 auto 20px;
}

.loader-spinner::before,
.loader-spinner::after {
  content: '';
  position: absolute;
  border-radius: 50%;
}

.loader-spinner::before {
  inset: 0;
  border: 3px solid rgba(20, 157, 221, 0.2);
}

.loader-spinner::after {
  inset: 0;
  border: 3px solid transparent;
  border-top-color: #149ddd;
  animation: loaderSpin 0.8s linear infinite;
}

@keyframes loaderSpin {
  to { transform: rotate(360deg); }
}

.loader-text {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.loader-progress {
  width: 150px;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  margin-top: 15px;
  overflow: hidden;
}

.loader-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #149ddd, #4fc3f7);
  width: 0;
  transition: width 0.3s ease;
}

/* ============================================
   2. PAGE TRANSITIONS
   ============================================ */
.page-transition {
  position: fixed;
  inset: 0;
  background: #040b14;
  z-index: 99998;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.page-transition.active {
  transform: translateY(0);
}

body.page-transitioning {
  overflow: hidden;
}

/* Content fade-in on load */
.page-content {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

body.page-loaded .page-content {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   3. BACK TO TOP BUTTON (ENHANCED)
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #149ddd 0%, #0d7ab5 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  z-index: 9996;
  box-shadow: 0 4px 15px rgba(20, 157, 221, 0.3);
  overflow: hidden;
}

.back-to-top.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: linear-gradient(135deg, #0d7ab5 0%, #149ddd 100%);
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(20, 157, 221, 0.4);
  color: #fff;
}

/* Progress ring */
.back-to-top .progress-ring {
  position: absolute;
  inset: -3px;
  border-radius: 50%;
}

.back-to-top .progress-ring circle {
  fill: none;
  stroke-width: 3;
}

.back-to-top .progress-ring .progress-bg {
  stroke: rgba(255, 255, 255, 0.2);
}

.back-to-top .progress-ring .progress-value {
  stroke: #fff;
  stroke-dasharray: 157;
  stroke-dashoffset: 157;
  transform: rotate(-90deg);
  transform-origin: center;
  transition: stroke-dashoffset 0.1s ease;
}

/* ============================================
   4. SECTION DIVIDERS
   ============================================ */
.section-divider {
  position: relative;
  height: 100px;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

.section-divider svg {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
}

.section-divider.wave-top svg {
  top: 0;
}

.section-divider.wave-bottom svg {
  bottom: 0;
  transform: rotate(180deg);
}

.section-divider path {
  fill: var(--section-bg, #f5f8fd);
}

/* Different section backgrounds */
.section-divider.to-dark path {
  fill: #040b14;
}

.section-divider.to-light path {
  fill: #f5f8fd;
}

.section-divider.to-white path {
  fill: #fff;
}

/* Animated wave */
.section-divider.animated path {
  animation: wavePulse 8s ease-in-out infinite;
}

@keyframes wavePulse {
  0%, 100% { d: path("M0,64 C200,100 400,20 600,64 C800,108 1000,44 1200,64 L1200,120 L0,120 Z"); }
  50% { d: path("M0,64 C200,20 400,100 600,64 C800,28 1000,90 1200,64 L1200,120 L0,120 Z"); }
}

/* ============================================
   5. SKILLS SECTION ANIMATION
   ============================================ */
.skill-item {
  margin-bottom: 25px;
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.skill-name {
  font-weight: 600;
  color: #45505b;
  font-size: 0.95rem;
}

.skill-percent {
  font-size: 0.85rem;
  color: #149ddd;
  font-weight: 600;
}

.skill-bar {
  height: 10px;
  background: rgba(20, 157, 221, 0.1);
  border-radius: 5px;
  overflow: hidden;
  position: relative;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, #149ddd 0%, #4fc3f7 100%);
  border-radius: 5px;
  width: 0;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.skill-progress::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 100%
  );
  animation: skillShine 2s ease-in-out infinite;
  animation-delay: 1.5s;
}

@keyframes skillShine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Skill categories */
.skill-category {
  margin-bottom: 35px;
}

.skill-category-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #45505b;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-category-title i {
  color: #149ddd;
}

/* ============================================
   6. CONTACT FORM ENHANCEMENTS
   ============================================ */
.php-email-form .form-group {
  position: relative;
  margin-bottom: 25px;
}

.php-email-form label {
  position: absolute;
  left: 15px;
  top: 12px;
  color: #6c757d;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  pointer-events: none;
  background: transparent;
  padding: 0 5px;
}

.php-email-form .form-control {
  padding: 12px 15px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  transition: all 0.3s ease;
  background: #fff;
}

.php-email-form .form-control:focus {
  border-color: #149ddd;
  box-shadow: 0 0 0 4px rgba(20, 157, 221, 0.1);
}

/* Floating label effect */
.php-email-form .form-control:focus + label,
.php-email-form .form-control:not(:placeholder-shown) + label,
.php-email-form .form-control.has-value + label {
  top: -10px;
  left: 10px;
  font-size: 0.8rem;
  color: #149ddd;
  background: #fff;
}

/* Input validation states */
.php-email-form .form-control.is-valid {
  border-color: #28a745;
}

.php-email-form .form-control.is-invalid {
  border-color: #dc3545;
  animation: inputShake 0.5s ease;
}

@keyframes inputShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-5px); }
  40%, 80% { transform: translateX(5px); }
}

/* Submit button */
.php-email-form button[type="submit"] {
  position: relative;
  padding: 12px 35px;
  border-radius: 30px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.php-email-form button[type="submit"]::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.php-email-form button[type="submit"]:hover::before {
  transform: translateX(100%);
}

/* Success message animation */
.form-success-message {
  animation: successPop 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes successPop {
  0% { transform: scale(0.8); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* ============================================
   7. PORTFOLIO FILTERING EFFECTS
   ============================================ */
.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 30px;
}

.portfolio-filters li {
  padding: 8px 20px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: #45505b;
  background: transparent;
  border: 2px solid transparent;
  border-radius: 25px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.portfolio-filters li::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #149ddd 0%, #4fc3f7 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
  border-radius: 25px;
}

.portfolio-filters li:hover {
  color: #149ddd;
  border-color: rgba(20, 157, 221, 0.3);
}

.portfolio-filters li.filter-active {
  color: #fff;
  border-color: transparent;
}

.portfolio-filters li.filter-active::before {
  opacity: 1;
}

/* Portfolio items transition */
.portfolio-item {
  transition: all 0.4s ease;
}

.portfolio-item.filtering {
  opacity: 0;
  transform: scale(0.8);
}

.portfolio-item.filtered-in {
  animation: portfolioFadeIn 0.5s ease forwards;
}

@keyframes portfolioFadeIn {
  from {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ============================================
   8. THEME TOGGLE BUTTON
   ============================================ */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: rgba(20, 157, 221, 0.1);
  border: 2px solid rgba(20, 157, 221, 0.3);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9997;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.theme-toggle:hover {
  background: rgba(20, 157, 221, 0.2);
  border-color: #149ddd;
  transform: scale(1.1);
}

.theme-toggle i {
  font-size: 1.2rem;
  color: #149ddd;
  transition: transform 0.5s ease;
}

.theme-toggle:hover i {
  transform: rotate(180deg);
}

/* Sun/Moon icons */
.theme-toggle .bi-sun-fill {
  display: none;
}

.theme-toggle .bi-moon-fill {
  display: block;
}

[data-theme="dark"] .theme-toggle .bi-sun-fill {
  display: block;
}

[data-theme="dark"] .theme-toggle .bi-moon-fill {
  display: none;
}

[data-theme="dark"] .theme-toggle {
  background: rgba(255, 193, 7, 0.1);
  border-color: rgba(255, 193, 7, 0.3);
}

[data-theme="dark"] .theme-toggle i {
  color: #ffc107;
}

/* ============================================
   9. DARK MODE ENHANCEMENTS
   ============================================ */
[data-theme="dark"] .page-loader {
  background: linear-gradient(135deg, #020508 0%, #0a1628 100%);
}

[data-theme="dark"] .skill-name {
  color: #e0e0e0;
}

[data-theme="dark"] .skill-bar {
  background: rgba(79, 195, 247, 0.1);
}

[data-theme="dark"] .php-email-form .form-control {
  background: #112240;
  border-color: #233554;
  color: #e0e0e0;
}

[data-theme="dark"] .php-email-form label {
  color: #8892b0;
}

[data-theme="dark"] .php-email-form .form-control:focus + label,
[data-theme="dark"] .php-email-form .form-control:not(:placeholder-shown) + label {
  background: #112240;
}

[data-theme="dark"] .portfolio-filters li {
  color: #ccd6f6;
}

[data-theme="dark"] .section-divider.to-light path {
  fill: #0a192f;
}

/* ============================================
   10. REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .loader-spinner::after,
  .skill-progress::after,
  .section-divider.animated path {
    animation: none;
  }
  
  .page-transition,
  .page-content,
  .back-to-top,
  .portfolio-item {
    transition: none;
  }
  
  .portfolio-item.filtered-in {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

/* ============================================
   11. RESPONSIVE ADJUSTMENTS
   ============================================ */
@media (max-width: 768px) {
  .back-to-top {
    width: 45px;
    height: 45px;
    bottom: 20px;
    right: 20px;
    font-size: 20px;
  }
  
  .theme-toggle {
    top: 15px;
    left: 15px;  /* Position on left side on mobile */
    right: auto;
    width: 40px;
    height: 40px;
    z-index: 9996;  /* Below mobile nav toggle to avoid conflicts */
  }
  
  .section-divider {
    height: 60px;
  }
  
  .portfolio-filters li {
    padding: 6px 15px;
    font-size: 0.85rem;
  }
}
/* ===================================
   Sponsorship Buttons & Sections
   =================================== */

/* Sidebar Sponsorship Links */
.sponsor-links {
  padding: 0 20px;
}

.sponsor-text {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  opacity: 0.9;
}

.sponsor-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
}

.sponsor-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.sponsor-btn:hover::before {
  left: 100%;
}

.sponsor-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  text-decoration: none;
  color: #fff;
}

.sponsor-btn:active {
  transform: translateY(0);
}

.sponsor-icon {
  font-size: 16px;
  line-height: 1;
}

/* Ko-fi Button */
.kofi-btn {
  background: linear-gradient(135deg, #ff5e5b 0%, #ff3838 100%);
  border: 2px solid rgba(255, 94, 91, 0.4);
}

.kofi-btn:hover {
  background: linear-gradient(135deg, #ff3838 0%, #ff1a1a 100%);
  border-color: rgba(255, 94, 91, 0.6);
}

/* GitHub Sponsor Button */
.github-sponsor-btn {
  background: linear-gradient(135deg, #ea4aaa 0%, #c93884 100%);
  border: 2px solid rgba(234, 74, 170, 0.4);
}

.github-sponsor-btn:hover {
  background: linear-gradient(135deg, #c93884 0%, #a82d6b 100%);
  border-color: rgba(234, 74, 170, 0.6);
}

/* About Section Support Box */
.support-section {
  background: linear-gradient(135deg, rgba(5, 99, 187, 0.05) 0%, rgba(234, 74, 170, 0.05) 100%);
  border-radius: 12px;
  border: 2px solid rgba(5, 99, 187, 0.1);
  transition: all 0.3s ease;
}

.support-section:hover {
  border-color: rgba(5, 99, 187, 0.2);
  box-shadow: 0 8px 24px rgba(5, 99, 187, 0.1);
  transform: translateY(-2px);
}

.support-section h4 {
  color: #272829;
  font-weight: 700;
  font-size: 24px;
}

.support-section p {
  line-height: 1.7;
}

/* Button Support Styles */
.btn-support {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  position: relative;
  overflow: hidden;
  border: none;
}

.btn-support::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s;
}

.btn-support:hover::before {
  left: 100%;
}

.btn-support:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  text-decoration: none;
  color: #fff;
}

.btn-support:active {
  transform: translateY(-1px);
}

.btn-icon {
  font-size: 20px;
  line-height: 1;
}

/* Ko-fi Button in About Section */
.btn-support.kofi {
  background: linear-gradient(135deg, #ff5e5b 0%, #ff3838 100%);
}

.btn-support.kofi:hover {
  background: linear-gradient(135deg, #ff3838 0%, #ff1a1a 100%);
}

/* GitHub Sponsor Button in About Section */
.btn-support.github {
  background: linear-gradient(135deg, #ea4aaa 0%, #c93884 100%);
}

.btn-support.github:hover {
  background: linear-gradient(135deg, #c93884 0%, #a82d6b 100%);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .sponsor-links {
    padding: 0 10px;
  }
  
  .sponsor-btn {
    font-size: 12px;
    padding: 8px 12px;
  }
  
  .btn-support {
    padding: 10px 20px;
    font-size: 14px;
  }
  
  .support-section {
    padding: 1.5rem !important;
  }
  
  .support-section h4 {
    font-size: 20px;
  }
}

@media (max-width: 576px) {
  .btn-support {
    width: 100%;
    justify-content: center;
  }
  
  .d-flex.gap-3 {
    flex-direction: column;
    gap: 0.75rem !important;
  }
}

/* Dark Mode Support */
[data-theme="dark"] .support-section {
  background: linear-gradient(135deg, rgba(5, 99, 187, 0.1) 0%, rgba(234, 74, 170, 0.1) 100%);
  border-color: rgba(5, 99, 187, 0.2);
}

[data-theme="dark"] .support-section:hover {
  border-color: rgba(5, 99, 187, 0.3);
}

[data-theme="dark"] .support-section h4 {
  color: #ffffff !important;
  font-weight: 700;
}

[data-theme="dark"] .support-section p {
  color: #d0d0d0 !important;
}

[data-theme="dark"] .support-section p.text-muted {
  color: #b8b8b8 !important;
}

[data-theme="dark"] .support-section p.small {
  color: #a8a8a8 !important;
}

/* Fallback for body.dark-mode class */
body.dark-mode .support-section {
  background: linear-gradient(135deg, rgba(5, 99, 187, 0.1) 0%, rgba(234, 74, 170, 0.1) 100%);
  border-color: rgba(5, 99, 187, 0.2);
}

body.dark-mode .support-section:hover {
  border-color: rgba(5, 99, 187, 0.3);
}

body.dark-mode .support-section h4 {
  color: #ffffff !important;
  font-weight: 700;
}

body.dark-mode .support-section p {
  color: #d0d0d0 !important;
}

body.dark-mode .support-section p.text-muted {
  color: #b8b8b8 !important;
}

body.dark-mode .support-section p.small {
  color: #a8a8a8 !important;
}

/* Animation for attention */
@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }
  50% {
    box-shadow: 0 4px 20px rgba(234, 74, 170, 0.4);
  }
}

.btn-support:hover {
  animation: pulse-glow 2s infinite;
}