:root {
  /* Light theme colors */
  --primary-color: #6366f1;
  --secondary-color: #8b5cf6;
  --accent-color: #f59e0b;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --glow-primary: rgba(99, 102, 241, 0.3);
  --glow-secondary: rgba(139, 92, 246, 0.3);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-cool: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.18);
  --backdrop-blur: blur(10px);
}

[data-theme="dark"] {
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --border-color: #475569;
  --glass-bg: rgba(15, 23, 42, 0.25);
  --glass-border: rgba(255, 255, 255, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: 2rem;
  right: 2rem;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  border: none;
  background: var(--gradient-primary);
  color: white;
  cursor: pointer;
  z-index: 1000;
  box-shadow: var(--shadow-medium);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.theme-toggle:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-heavy);
}

/* Scroll Progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: var(--gradient-primary);
  z-index: 1000;
  transition: width 0.1s ease;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, 
    rgba(99, 102, 241, 0.1) 0%, 
    rgba(139, 92, 246, 0.1) 50%, 
    rgba(245, 158, 11, 0.1) 100%);
}

.particles {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary-color);
  border-radius: 50%;
  opacity: 0.6;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.6;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 1;
  }
}

.hero-content {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4rem;
  padding: 2rem;
  position: relative;
  z-index: 2;
  align-items: center;
}

.profile-container {
  position: relative;
}

.avatar-wrapper {
  position: relative;
  width: 200px;
  height: 200px;
}

.avatar-ring {
  position: absolute;
  top: -15px;
  left: -15px;
  right: -15px;
  bottom: -15px;
  border: 3px solid transparent;
  border-radius: 50%;
  background: var(--gradient-primary);
  background-clip: padding-box;
  animation: rotate 10s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 6px solid var(--bg-primary);
  box-shadow: var(--shadow-heavy);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 2;
}

.avatar:hover {
  transform: scale(1.05);
  box-shadow: 0 0 50px var(--glow-primary);
}

.status-dot {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 24px;
  height: 24px;
  background: #10b981;
  border-radius: 50%;
  border: 4px solid var(--bg-primary);
  animation: pulse 2s ease-in-out infinite;
  z-index: 3;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.greeting {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.125rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.wave {
  font-size: 1.5rem;
  animation: wave 2s ease-in-out infinite;
}

@keyframes wave {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(20deg); }
  75% { transform: rotate(-10deg); }
}

.name {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0;
}

.first-name {
  color: var(--text-primary);
  display: block;
}

.last-name {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.title-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
  font-size: 1.5rem;
}

.title-prefix {
  color: var(--text-secondary);
  font-weight: 500;
}

.title-main {
  color: var(--primary-color);
  font-weight: 700;
  position: relative;
}

.title-main::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  animation: underlineExpand 2s ease-out 1s forwards;
}

@keyframes underlineExpand {
  to { transform: scaleX(1); }
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.125rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin: 1rem 0;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.btn-primary, .btn-secondary {
  padding: 1rem 2rem;
  border-radius: 3rem;
  text-decoration: none;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-heavy);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--backdrop-blur);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  transform: translateY(-2px);
}

/* Floating Elements */
.floating-elements {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.float-item {
  position: absolute;
  left: var(--x);
  top: var(--y);
  font-size: 2rem;
  color: var(--primary-color);
  opacity: 0.3;
  animation: floatAround 8s ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes floatAround {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(20px, -20px) rotate(90deg);
  }
  50% {
    transform: translate(-20px, 20px) rotate(180deg);
  }
  75% {
    transform: translate(20px, 20px) rotate(270deg);
  }
}

/* Section Styles */
.section {
  padding: 6rem 2rem;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Card Glow Effect */
.card-glow {
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-primary);
  border-radius: inherit;
  opacity: 0;
  filter: blur(20px);
  transition: opacity 0.3s ease;
  z-index: -1;
}

.about-card:hover .card-glow,
.project-card:hover .card-glow,
.education-card:hover .card-glow,
.experience-card:hover .card-glow,
.contact-card:hover .card-glow {
  opacity: 0.3;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
}

.main-about {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: 2rem;
  padding: 3rem;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-about:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
}

.about-text p {
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.highlight {
  color: var(--primary-color);
  font-weight: 600;
}

.about-highlights {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.highlight-item i {
  color: var(--primary-color);
  font-size: 1.25rem;
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.info-card, .interests-card {
  background: var(--bg-secondary);
  border-radius: 1.5rem;
  padding: 2rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-card:hover, .interests-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.info-card h4, .interests-card h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.label {
  color: var(--text-secondary);
  font-weight: 500;
}

.value {
  color: var(--text-primary);
  font-weight: 600;
}

.interest-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.interest-tag {
  padding: 0.5rem 1rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.interest-tag:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Education Section */
.education-timeline {
  max-width: 800px;
  margin: 0 auto;
}

.education-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: 2rem;
  padding: 3rem;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.education-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
}

.timeline-marker {
  position: absolute;
  left: -2rem;
  top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.marker-dot {
  width: 1rem;
  height: 1rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--bg-primary);
}

.marker-line {
  width: 2px;
  height: 100px;
  background: var(--gradient-primary);
  margin-top: 0.5rem;
}

.education-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.education-period {
  background: var(--gradient-primary);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.education-status {
  padding: 0.25rem 1rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.current {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.education-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.education-major {
  font-size: 1.125rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 1rem;
}

.education-school {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 2rem;
}

.education-details {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  align-items: start;
}

.gpa-section {
  text-align: center;
}

.gpa-circle {
  position: relative;
  margin-bottom: 1rem;
}

.progress-ring {
  transform: rotate(-90deg);
}

.progress-ring-bg {
  stroke: var(--border-color);
}

.progress-ring-progress {
  stroke: var(--primary-color);
  stroke-linecap: round;
  stroke-dasharray: 157; /* 2 * π * 25 */
  stroke-dashoffset: calc(157 - 157 * var(--progress) / 100);
  transition: stroke-dashoffset 2s ease-in-out;
}

.gpa-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.gpa-number {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-color);
}

.gpa-scale {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.achievements-section h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.achievement-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.achievement-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: 1rem;
  transition: all 0.3s ease;
}

.achievement-item:hover {
  background: var(--primary-color);
  color: white;
  transform: translateX(5px);
}

.achievement-item i {
  color: var(--accent-color);
  font-size: 1rem;
}

.achievement-item:hover i {
  color: white;
}

/* Skills Section */
.skills-container {
  max-width: 1000px;
  margin: 0 auto;
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.skill-category {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: 2rem;
  padding: 2.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.category-header i {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.category-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-items {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.skill-item {
  position: relative;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.skill-name {
  font-weight: 500;
  color: var(--text-primary);
}

.skill-level {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-color);
}

.skill-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 1rem;
  overflow: hidden;
  position: relative;
}

.skill-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 1rem;
  width: 0%;
  transition: width 2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.skill-progress::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 4px;
  height: 100%;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 0 1rem 1rem 0;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.tool-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tool-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  background: var(--primary-color);
  color: white;
}

.tool-icon {
  font-size: 1.5rem;
  color: var(--primary-color);
}

.tool-item:hover .tool-icon {
  color: white;
}

.tool-info {
  flex: 1;
}

.tool-name {
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.stars {
  display: flex;
  gap: 0.125rem;
}

.stars i {
  font-size: 0.75rem;
  color: var(--accent-color);
}

.tool-item:hover .stars i {
  color: white;
}

/* Languages Section */
.languages-section {
  background: var(--bg-secondary);
  border-radius: 2rem;
  padding: 2.5rem;
  border: 1px solid var(--border-color);
}

.languages-section h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2rem;
  text-align: center;
}

.languages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.language-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.language-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.language-flag {
  font-size: 1.5rem;
}

.language-info {
  flex: 1;
}

.language-name {
  font-weight: 500;
  color: var(--text-primary);
  display: block;
}

.language-level {
  font-size: 0.875rem;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-weight: 500;
  display: inline-block;
  margin-top: 0.25rem;
}

.native {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.advanced {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
}

.beginner {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-color);
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: 2rem;
  overflow: hidden;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-heavy);
}

.featured {
  grid-column: span 2;
  grid-row: span 2;
}

.project-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.featured .project-image {
  height: 250px;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s ease;
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-links {
  display: flex;
  gap: 1rem;
}

.project-link {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: 1.25rem;
  transition: all 0.3s ease;
}

.project-link:hover {
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.project-content {
  padding: 2rem;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.project-type {
  background: var(--gradient-primary);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-date {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.featured .project-title {
  font-size: 1.5rem;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.project-stats {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: 1rem;
}

.stat {
  text-align: center;
  flex: 1;
}

.stat-number {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

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

/* Experience Section */
.experience-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 2rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
}

.experience-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 5rem;
}

.experience-item .timeline-marker {
  position: absolute;
  left: 1rem;
  top: 2rem;
}

.marker-icon {
  width: 2rem;
  height: 2rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  box-shadow: 0 0 0 4px var(--bg-primary);
}

.experience-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: 2rem;
  padding: 2.5rem;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.experience-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.experience-title h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.company-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.period-badge {
  padding: 0.5rem 1.5rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.current {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}

.ongoing {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
}

.experience-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.achievement-card {
  background: var(--bg-secondary);
  border-radius: 1rem;
  padding: 1rem;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.achievement-card:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.achievement-card i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.achievement-card:hover i {
  color: white;
}

.achievement-number {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.achievement-text {
  font-size: 0.75rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.responsibilities h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.responsibility-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.responsibility-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.responsibility-item i {
  color: #10b981;
  margin-top: 0.25rem;
  flex-shrink: 0;
}

/* Contact Section */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: 2rem;
  padding: 3rem;
  height: fit-content;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-heavy);
}

.contact-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.contact-header p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  position: relative;
  transition: all 0.3s ease;
}

.contact-method:hover {
  background: var(--primary-color);
  color: white;
  transform: translateX(5px);
}

.method-icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.method-info {
  flex: 1;
}

.method-label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.contact-method:hover .method-label {
  color: rgba(255, 255, 255, 0.8);
}

.method-value {
  font-weight: 500;
  color: var(--text-primary);
}

.contact-method:hover .method-value {
  color: white;
}

.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

.copy-btn:hover {
  background: var(--bg-tertiary);
  color: var(--primary-color);
}

.contact-method:hover .copy-btn {
  color: white;
}

.contact-method:hover .copy-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: 2rem;
  border: 1px solid var(--border-color);
  font-weight: 500;
  transition: all 0.3s ease;
}

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

/* Contact Form */
.contact-form {
  background: var(--bg-secondary);
  border-radius: 2rem;
  padding: 3rem;
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 2rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.submit-btn {
  width: 100%;
  padding: 1rem 2rem;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-heavy);
}

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

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.heart {
  color: #ef4444;
  animation: heartbeat 2s ease-in-out infinite;
}

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

.scroll-top {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all 0.3s ease;
  opacity: 0;
  visibility: hidden;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .featured {
    grid-column: span 1;
    grid-row: span 1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 4rem 1rem;
  }
  
  .hero-content {
    padding: 1rem;
  }
  
  .avatar-wrapper {
    width: 150px;
    height: 150px;
  }
  
  .hero-stats {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .timeline-marker {
    left: -1.5rem;
  }
  
  .experience-timeline::before {
    left: 1.5rem;
  }
  
  .experience-item {
    padding-left: 3rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .languages-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .theme-toggle {
    top: 1rem;
    right: 1rem;
    width: 3rem;
    height: 3rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .name {
    font-size: 2rem;
  }
  
  .main-about,
  .education-card,
  .experience-card,
  .contact-card,
  .skill-category {
    padding: 2rem;
  }
  
  .contact-form {
    padding: 2rem;
  }
  
  .achievements-grid {
    grid-template-columns: 1fr;
  }
  
  .education-details {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 1.5rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* Animation Classes */
.animate-in {
  animation: slideInUp 0.6s ease-out forwards;
}

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

.stagger-animation {
  animation-delay: calc(var(--stagger) * 0.1s);
}

/* Loading Animation */
.loading {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.loading.loaded {
  opacity: 1;
  transform: translateY(0);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--primary-color);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 1rem;
  font-weight: 500;
  box-shadow: var(--shadow-heavy);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 1000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 1rem;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* Print Styles */
@media print {
  body {
    background: white !important;
    color: black !important;
  }
  
  .theme-toggle,
  .floating-elements,
  .scroll-progress {
    display: none !important;
  }
  
  .section {
    padding: 2rem 0 !important;
    page-break-inside: avoid;
  }
  
  .hero {
    min-height: auto !important;
    page-break-after: always;
  }
  
  .card-glow {
    display: none !important;
  }
}