* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, sans-serif;
}

body {
  margin: 0;
  background: #0d1117;
  padding-top: 70px;
  color: #e6edf3;
}

/* Timeline Container */
.timeline-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px 100px;
}

/* About Section */
.about-section {
  background: linear-gradient(135deg, #1a1f35 0%, #2d1f47 100%);
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 80px;
  color: white;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  border: 1px solid rgba(99, 102, 241, 0.2);
  position: relative;
  overflow: hidden;
}

.about-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('images/About_Background.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.about-header {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-bottom: 30px;
}

.profile-image {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid #6366f1;
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.3), 0 10px 40px rgba(0,0,0,0.4);
  flex-shrink: 0;
}

.profile-image img {
  width: 180%;
  height: 180%;
  object-fit: cover;
  object-position: center 25%;
  margin-left: -60%;
  margin-top: -60%;
}

.about-intro {
  flex: 1;
}

.about-title {
  font-size: 48px;
  font-weight: 800;
  margin: 0 0 16px 0;
  line-height: 1.2;
}

.highlight {
  color: #6366f1;
  position: relative;
  display: inline-block;
}

.about-subtitle {
  font-size: 24px;
  font-weight: 500;
  margin: 0 0 24px 0;
  opacity: 0.95;
  color: #a5b4fc;
}

.about-description {
  font-size: 18px;
  line-height: 1.8;
  margin: 0 0 40px 0;
  opacity: 0.85;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.stat {
  text-align: center;
  padding: 20px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.stat:hover {
  transform: translateY(-5px);
  background: rgba(99, 102, 241, 0.2);
}

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: #6366f1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Vision Section */
.vision-section {
  margin-bottom: 80px;
}

.section-heading {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  color: #e6edf3;
  margin: 0 0 40px 0;
  position: relative;
}

.section-heading::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(to right, #6366f1, #8b5cf6);
  margin: 16px auto 0;
  border-radius: 2px;
}

.vision-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.vision-card {
  background: #161b22;
  border-radius: 16px;
  padding: 32px;
  border: 1px solid #30363d;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.vision-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.vision-card-1::before {
  background-image: url('images/Vision_1.png');
}

.vision-card-2::before {
  background-image: url('images/Vision_2.jpg');
}

.vision-card-3::before {
  background-image: url('images/Vision_3.jpg');
}

.vision-card:hover::before {
  opacity: 0.25;
}

.vision-card > * {
  position: relative;
  z-index: 1;
}

.vision-card:hover {
  transform: translateY(-8px);
  border-color: #6366f1;
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.15);
}

.vision-icon {
  font-size: 40px;
  margin-bottom: 20px;
}

.vision-card h3 {
  font-size: 22px;
  font-weight: 700;
  color: #e6edf3;
  margin: 0 0 16px 0;
}

.vision-card p {
  font-size: 16px;
  line-height: 1.7;
  color: #c9d1d9;
  margin: 0;
}

/* Personal Projects Section */
.projects-section {
  margin-top: 80px;
  margin-bottom: 40px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

/* Project Card */
.personal-project-card {
  background: #161b22;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #30363d;
  transition: all 0.3s ease;
}

.personal-project-card:hover {
  transform: translateY(-8px);
  border-color: #6366f1;
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.15);
}

/* Carousel Styles */
.project-carousel {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: #21262d;
}

.carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.4s ease-in-out;
}

.carousel-slide {
  min-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-slide .placeholder-image {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1f35 0%, #2d1f47 100%);
  color: #6366f1;
  font-size: 48px;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 10;
}

.carousel-btn:hover {
  background: #6366f1;
}

.carousel-btn.prev {
  left: 12px;
}

.carousel-btn.next {
  right: 12px;
}

.carousel-indicators {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.carousel-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all 0.3s ease;
}

.carousel-indicator.active {
  background: #6366f1;
  transform: scale(1.2);
}

/* Project Info */
.project-info {
  padding: 24px;
}

.project-info h3 {
  font-size: 22px;
  font-weight: 700;
  color: #e6edf3;
  margin: 0 0 12px 0;
}

.project-info p {
  font-size: 15px;
  line-height: 1.7;
  color: #8b949e;
  margin: 0 0 20px 0;
}

.project-info .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #30363d;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #6366f1;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.project-link:hover {
  color: #8b5cf6;
}

.project-link svg {
  width: 16px;
  height: 16px;
}

/* Empty Projects State */
.projects-empty {
  background: #161b22;
  border-radius: 16px;
  padding: 60px 40px;
  text-align: center;
  border: 2px dashed #30363d;
  max-width: 600px;
  margin: 0 auto;
}

.projects-empty-icon {
  font-size: 64px;
  margin-bottom: 24px;
}

.projects-empty h3 {
  font-size: 28px;
  font-weight: 700;
  color: #6366f1;
  margin: 0 0 16px 0;
}

.projects-empty p {
  font-size: 16px;
  line-height: 1.6;
  color: #8b949e;
  margin: 0;
}

.timeline-heading {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  color: #e6edf3;
  margin: 0 0 60px 0;
  position: relative;
}

.timeline-heading::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(to right, #6366f1, #8b5cf6);
  margin: 16px auto 0;
  border-radius: 2px;
}

.timeline {
  position: relative;
  padding-left: 80px;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, #6366f1, #8b5cf6);
}

.timeline-item {
  position: relative;
  margin-bottom: 80px;
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }
.timeline-item:nth-child(6) { animation-delay: 0.6s; }

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

.timeline-marker {
  position: absolute;
  left: -68px;
  top: 8px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #6366f1;
  border: 4px solid #0d1117;
  box-shadow: 0 0 0 4px #6366f1;
  z-index: 1;
}

.timeline-content {
  background: #161b22;
  border-radius: 12px;
  padding: 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #30363d;
}

.timeline-content:hover {
  transform: translateX(8px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.2);
  border-color: #6366f1;
}

.year {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  font-size: 32px;
  font-weight: 700;
  padding: 20px 30px;
  letter-spacing: 1px;
}

.projects {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.project-card {
  padding: 20px;
  border-left: 3px solid #6366f1;
  background: #21262d;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.project-card:hover {
  border-left-color: #8b5cf6;
  background: #2d333b;
  transform: translateX(4px);
}

.project-card h3 {
  margin: 0 0 12px 0;
  font-size: 20px;
  color: #e6edf3;
}

.project-card p {
  margin: 0 0 16px 0;
  color: #8b949e;
  line-height: 1.6;
  font-size: 15px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  background: rgba(99, 102, 241, 0.2);
  color: #a5b4fc;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid rgba(99, 102, 241, 0.3);
}

/* Header Styles */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: #161b22;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  z-index: 1000;
  border-bottom: 1px solid #30363d;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #6366f1;
  font-size: 24px;
  font-weight: 700;
  text-decoration: none;
}

.logo-avatar {
  display: none;
}

.logo-avatar img {
  display: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
}

.logo-text {
  color: #e6edf3;
}

.main-nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-link {
  color: #8b949e;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  padding: 8px 0;
  position: relative;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: #6366f1;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #6366f1;
  transition: width 0.3s ease;
}

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

/* Social Links */
.social-links {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid #30363d;
}

.social-link {
  color: #8b949e;
  transition: color 0.3s ease, transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-link:hover {
  color: #6366f1;
  transform: translateY(-2px);
}

.social-link svg {
  width: 22px;
  height: 22px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.menu-icon {
  display: block;
  width: 24px;
  height: 2px;
  background: #e6edf3;
  position: relative;
  transition: background 0.3s ease;
}

.menu-icon::before,
.menu-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: #e6edf3;
  transition: transform 0.3s ease;
}

.menu-icon::before {
  top: -8px;
}

.menu-icon::after {
  bottom: -8px;
}

/* Mobile */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .main-nav {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: #161b22;
    flex-direction: column;
    gap: 0;
    padding: 20px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-bottom: 1px solid #30363d;
  }
  
  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav-link {
    padding: 12px 0;
    width: 100%;
  }
  
  .about-section {
    padding: 40px 24px;
    margin-bottom: 60px;
  }
  
  .about-header {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }
  
  .profile-image {
    width: 120px;
    height: 120px;
  }
  
  .about-title {
    font-size: 32px;
  }
  
  .about-subtitle {
    font-size: 18px;
  }
  
  .about-description {
    font-size: 16px;
  }
  
  .about-stats {
    gap: 16px;
  }
  
  .stat-number {
    font-size: 28px;
  }
  
  .timeline-heading {
    font-size: 28px;
    margin-bottom: 40px;
  }
  
  .timeline {
    padding-left: 50px;
  }
  
  .timeline::before {
    left: 12px;
  }
  
  .timeline-marker {
    left: -45px;
    width: 16px;
    height: 16px;
  }
  
  .year {
    font-size: 24px;
    padding: 16px 20px;
  }
  
  .projects {
    padding: 16px;
  }
  
  .project-card {
    padding: 16px;
  }
  
  .project-card h3 {
    font-size: 18px;
  }

  /* Projects Grid Mobile */
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .project-carousel {
    height: 180px;
  }

  .project-info {
    padding: 20px;
  }

  .project-info h3 {
    font-size: 20px;
  }
}