/* Modern Dark Theme Portfolio Styles */

/* CSS Variables for consistent theming */
:root {
  /* Colors */
  --primary-color: #00d4ff;
  --primary-dark: #0099cc;
  --secondary-color: #ff6b35;
  --accent-color: #7c3aed;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  
  /* Background Colors - Dark Theme */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: #1e1e1e;
  --bg-hover: #2a2a2a;
  
  /* Text Colors - Dark Theme */
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --text-muted: #666666;
  --text-accent: var(--primary-color);
  
  /* Border Colors - Dark Theme */
  --border-primary: #333333;
  --border-secondary: #444444;
  --border-accent: var(--primary-color);
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.6);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Light Theme Variables */
[data-theme="light"] {
  /* Background Colors - Light Theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --bg-card: #ffffff;
  --bg-hover: #f1f3f4;
  
  /* Text Colors - Light Theme */
  --text-primary: #212529;
  --text-secondary: #495057;
  --text-muted: #6c757d;
  --text-accent: var(--primary-color);
  
  /* Border Colors - Light Theme */
  --border-primary: #dee2e6;
  --border-secondary: #e9ecef;
  --border-accent: var(--primary-color);
  
  /* Shadows - Light Theme */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.25);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

/* Allow text selection for specific elements */
p, span, h1, h2, h3, h4, h5, h6, .contact-value, .contact-label, .timeline-description, .project-description, .achievement-description, .about-description, .hero-description {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

a {
  color: var(--text-accent);
    text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Section */
.section {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  text-align: center;
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-2xl);
  position: relative;
  color: var(--text-primary);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 2px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-primary);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-logo {
  font-size: var(--font-size-2xl);
  font-weight: 800;
    color: var(--primary-color);
}

.logo-text {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--text-secondary);
    font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-normal);
}

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

/* Theme Toggle Button */
.theme-toggle {
  background: var(--bg-card);
  border: 2px solid var(--border-primary);
  border-radius: 50%;
  padding: 0;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: var(--spacing-md);
  box-shadow: var(--shadow-sm), 0 0 0 0 rgba(0, 212, 255, 0.3);
  overflow: hidden;
}

.theme-toggle::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  opacity: 0;
  transition: opacity var(--transition-normal);
  border-radius: 50%;
}

.theme-toggle:hover {
  border-color: var(--primary-color);
  transform: scale(1.1);
  box-shadow: var(--shadow-md), 0 0 20px rgba(0, 212, 255, 0.4);
}

.theme-toggle:hover::before {
  opacity: 0.1;
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-icon {
  width: 22px;
  height: 22px;
  transition: all var(--transition-normal);
  position: relative;
  z-index: 1;
  color: var(--text-primary);
}

.sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  color: #ffd700;
}

.moon-icon {
  opacity: 0;
  transform: rotate(180deg) scale(0.8);
  color: #e6e6fa;
}

[data-theme="light"] .sun-icon {
  opacity: 0;
  transform: rotate(180deg) scale(0.8);
}

[data-theme="light"] .moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.theme-toggle:hover .theme-icon {
  transform: scale(1.1);
}

[data-theme="light"] .theme-toggle:hover .sun-icon {
  transform: rotate(180deg) scale(0.9);
}

[data-theme="light"] .theme-toggle:hover .moon-icon {
  transform: rotate(0deg) scale(1.1);
}

.hamburger {
  display: none;
        flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 100vh;
    display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  animation: fadeInUp 1s ease-out;
}

.hero-greeting {
    display: block;
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
    font-weight: 400;
}

.hero-name {
    display: block;
  font-size: var(--font-size-5xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-accent);
  margin-bottom: var(--spacing-md);
  font-weight: 500;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: var(--font-size-base);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

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

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

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

/* Hero Visual */
.hero-visual {
    display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInRight 1s ease-out 0.3s both;
}

.code-block {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 400px;
    width: 100%;
}

.code-header {
  background: var(--bg-tertiary);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  border-bottom: 1px solid var(--border-primary);
}

.code-dots {
  display: flex;
  gap: var(--spacing-xs);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca3f; }

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

.code-content {
  padding: var(--spacing-md);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.code-line {
  margin-bottom: var(--spacing-xs);
}

.code-keyword { color: #ff79c6; }
.code-variable { color: #8be9fd; }
.code-operator { color: #f8f8f2; }
.code-string { color: #f1fa8c; }

/* About Section */
.about-content {
  max-width: 800px;
    margin: 0 auto;
  text-align: center;
}

.about-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

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

.stat {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  transition: transform var(--transition-normal);
}

.stat:hover {
  transform: translateY(-5px);
}

.stat-number {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

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

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

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-accent);
}

.project-card.featured {
  border-color: var(--primary-color);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 212, 255, 0.05) 100%);
}

.project-header {
    display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-sm);
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.project-badge {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
}

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

.project-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-primary);
}

.metric {
  text-align: center;
}

.metric-value {
    display: block;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

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

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.tech-tag {
  background: var(--bg-hover);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border: 1px solid var(--border-secondary);
  transition: all var(--transition-fast);
}

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

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

.skill-category {
  margin-bottom: var(--spacing-2xl);
}

.skill-category-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.skills-grid {
  display: grid;
  gap: var(--spacing-md);
}

.skill-item {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.skill-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

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

.skill-level {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

.skill-bar {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-sm);
  transition: width 1s ease-out;
  width: 0;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.skill-tag {
  background: var(--bg-card);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--border-primary);
  transition: all var(--transition-normal);
  cursor: default;
}

.skill-tag:hover {
  background: var(--primary-color);
  color: var(--bg-primary);
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

/* Achievements Section */
.achievements-section {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.achievement-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.achievement-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(0, 212, 255, 0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.achievement-card:hover::before {
  opacity: 1;
}

.achievement-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.achievement-card.primary {
  border-color: var(--primary-color);
}

.achievement-card.secondary {
  border-color: var(--secondary-color);
}

.achievement-card.tertiary {
  border-color: var(--accent-color);
}

.achievement-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
    display: flex;
    align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.achievement-icon svg {
  width: 30px;
  height: 30px;
}

.achievement-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.achievement-event {
  font-size: var(--font-size-lg);
    color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.achievement-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

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

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

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-2xl);
  padding-left: 80px;
}

.timeline-marker {
  position: absolute;
  left: 20px;
  top: 10px;
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  border: 4px solid var(--bg-primary);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--primary-color);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.timeline-content:hover {
  border-color: var(--primary-color);
  transform: translateX(10px);
}

.timeline-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.timeline-period {
  display: inline-block;
  background: var(--primary-color);
  color: var(--bg-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

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

/* Contact Section */
.contact-section {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.contact-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.contact-subtitle {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.contact-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.contact-method {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
    display: flex;
    align-items: center;
  gap: var(--spacing-md);
  transition: all var(--transition-normal);
  text-decoration: none;
  color: inherit;
}

.contact-method:hover {
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
  color: var(--text-primary);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-details {
  text-align: left;
}

.contact-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.contact-value {
  display: block;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  font-weight: 500;
}

/* Footer */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-primary);
  padding: var(--spacing-xl) 0;
}

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

.footer-text {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.footer-subtext {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  
  .theme-toggle {
    margin-left: var(--spacing-sm);
    width: 48px;
    height: 48px;
  }
  
  .theme-icon {
    width: 20px;
    height: 20px;
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--bg-secondary);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg) 0;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-menu li {
    margin: var(--spacing-sm) 0;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-xl);
  }
  
  .hero-name {
    font-size: var(--font-size-4xl);
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .achievements-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-methods {
    grid-template-columns: 1fr;
  }
  
  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .experience-timeline::before {
    left: 15px;
  }
  
  .timeline-item {
    padding-left: 50px;
  }
  
  .timeline-marker {
    left: 5px;
  }
  
  .timeline-content:hover {
    transform: none;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-name {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .project-metrics {
    grid-template-columns: 1fr;
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

/* Remove selection highlights */
::selection {
  background: transparent;
}

::-moz-selection {
  background: transparent;
}

/* Remove tap highlights on mobile */
* {
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px;
}

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