/* ============================================
   KevinTen Personal Website - Main Styles
   Modern Professional Design
   ============================================ */

/* ============================================
   Accessibility - Skip to Content
   ============================================ */

.skip-to-content {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: white;
  font-weight: var(--font-medium);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: top var(--transition-fast);
}

.skip-to-content:focus {
  top: var(--space-4);
  outline: 3px solid white;
  outline-offset: 2px;
}

/* ============================================
   Navigation
   ============================================ */

.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--font-bold);
  font-size: var(--text-xl);
  color: var(--color-text);
  text-decoration: none;
}

.nav-logo img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--color-primary);
  box-shadow: var(--glow-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-fast);
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-24) var(--space-6);
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
  z-index: 1;
}

.hero-avatar-wrapper {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-8);
}

.hero-avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-primary);
  box-shadow: var(--glow-primary);
  animation: float 6s ease-in-out infinite;
  transition: transform var(--transition-base);
}

.hero-avatar:hover {
  transform: scale(1.05) rotate(5deg);
}

.hero-avatar-glow {
  position: absolute;
  inset: -10px;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.3;
  filter: blur(20px);
  z-index: -1;
  animation: glow 3s ease-in-out infinite;
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp var(--transition-slow) ease-out 0.1s both;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  animation: fadeInUp var(--transition-slow) ease-out 0.2s both;
}

.typing-text {
  display: inline-block;
  overflow: hidden;
  border-right: 3px solid var(--color-primary);
  white-space: nowrap;
  animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
  from { width: 0 }
  to { width: 100% }
}

@keyframes blink-caret {
  from, to { border-color: transparent }
  50% { border-color: var(--color-primary); }
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  animation: fadeInUp var(--transition-slow) ease-out 0.3s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
  animation: fadeInUp var(--transition-slow) ease-out 0.4s both;
}

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

.stat-value {
  display: block;
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  font-family: var(--font-mono);
}

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

.hero-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  animation: fadeInUp var(--transition-slow) ease-out 0.5s both;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  color: var(--color-text-muted);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: var(--leading-none);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

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

.btn-secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

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

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

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* ============================================
   Section Styles
   ============================================ */

.section {
  padding: var(--space-24) var(--space-6);
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-16);
}

.section-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  background: var(--gradient-neon);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-description {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

/* ============================================
   Projects Grid
   ============================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-6);
  max-width: var(--container-xl);
  margin: 0 auto;
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-glow);
  box-shadow: var(--shadow-xl), var(--glow-primary);
}

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

.project-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.project-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.project-stats-badge {
  display: flex;
  gap: var(--space-2);
}

.stat-badge {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

.project-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-3);
}

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

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

.project-description {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.project-footer {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.language-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.language-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
}

.language-badge.java .language-dot {
  background: var(--color-java);
}

.language-badge.go .language-dot {
  background: var(--color-go);
}

.contribution-badge {
  padding: var(--space-1) var(--space-2);
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: white;
  font-weight: var(--font-medium);
}

.award-badge {
  padding: var(--space-1) var(--space-2);
  background: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: white;
  font-weight: var(--font-medium);
}

/* ============================================
   Tech Stack
   ============================================ */

.tech-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
  max-width: var(--container-xl);
  margin: 0 auto;
}

.tech-category {
  text-align: center;
}

.tech-category-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.tech-tag {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  cursor: default;
}

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

.tech-tag.secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

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

/* ============================================
   Contributions
   ============================================ */

.contributions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  max-width: var(--container-lg);
  margin: 0 auto;
}

.contribution-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
}

.contribution-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-glow);
  box-shadow: var(--shadow-xl);
}

.contribution-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  color: white;
}

.contribution-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.contribution-description {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ============================================
   Particle Background - Pure CSS Animation
   High Performance, No JavaScript Required
   ============================================ */

.particles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  will-change: transform;
  opacity: 0.6;
}

/* Particle float animations with varied durations */
@keyframes particle-float-1 {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-30px) translateX(15px); }
  50% { transform: translateY(-15px) translateX(-15px); }
  75% { transform: translateY(-40px) translateX(10px); }
}

@keyframes particle-float-2 {
  0%, 100% { transform: translateY(0) translateX(0); }
  33% { transform: translateY(-25px) translateX(-20px); }
  66% { transform: translateY(-35px) translateX(15px); }
}

@keyframes particle-float-3 {
  0%, 100% { transform: translateY(0) translateX(0); }
  20% { transform: translateY(-20px) translateX(10px); }
  40% { transform: translateY(-40px) translateX(-10px); }
  60% { transform: translateY(-30px) translateX(20px); }
  80% { transform: translateY(-50px) translateX(-5px); }
}

@keyframes particle-pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.2); }
}

/* Generate 30 particles with pure CSS */
.particle:nth-child(1) { width: 4px; height: 4px; left: 5%; top: 10%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 8px rgba(59, 130, 246, 0.6); animation: particle-float-1 12s ease-in-out infinite; }
.particle:nth-child(2) { width: 3px; height: 3px; left: 15%; top: 25%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 6px rgba(139, 92, 246, 0.6); animation: particle-float-2 15s ease-in-out infinite 1s; }
.particle:nth-child(3) { width: 5px; height: 5px; left: 25%; top: 5%; background: rgba(6, 182, 212, 0.6); box-shadow: 0 0 10px rgba(6, 182, 212, 0.6); animation: particle-float-3 18s ease-in-out infinite 2s; }
.particle:nth-child(4) { width: 3px; height: 3px; left: 35%; top: 40%; background: rgba(244, 114, 182, 0.6); box-shadow: 0 0 6px rgba(244, 114, 182, 0.6); animation: particle-float-1 14s ease-in-out infinite 0.5s; }
.particle:nth-child(5) { width: 4px; height: 4px; left: 45%; top: 15%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 8px rgba(59, 130, 246, 0.6); animation: particle-float-2 16s ease-in-out infinite 3s; }
.particle:nth-child(6) { width: 2px; height: 2px; left: 55%; top: 60%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 4px rgba(139, 92, 246, 0.6); animation: particle-float-3 13s ease-in-out infinite 1.5s; }
.particle:nth-child(7) { width: 5px; height: 5px; left: 65%; top: 20%; background: rgba(6, 182, 212, 0.6); box-shadow: 0 0 10px rgba(6, 182, 212, 0.6); animation: particle-float-1 17s ease-in-out infinite 2.5s; }
.particle:nth-child(8) { width: 3px; height: 3px; left: 75%; top: 75%; background: rgba(244, 114, 182, 0.6); box-shadow: 0 0 6px rgba(244, 114, 182, 0.6); animation: particle-float-2 11s ease-in-out infinite 0.8s; }
.particle:nth-child(9) { width: 4px; height: 4px; left: 85%; top: 30%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 8px rgba(59, 130, 246, 0.6); animation: particle-float-3 19s ease-in-out infinite 4s; }
.particle:nth-child(10) { width: 3px; height: 3px; left: 95%; top: 50%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 6px rgba(139, 92, 246, 0.6); animation: particle-float-1 14s ease-in-out infinite 1.2s; }
.particle:nth-child(11) { width: 4px; height: 4px; left: 10%; top: 80%; background: rgba(6, 182, 212, 0.6); box-shadow: 0 0 8px rgba(6, 182, 212, 0.6); animation: particle-float-2 16s ease-in-out infinite 2.8s; }
.particle:nth-child(12) { width: 2px; height: 2px; left: 20%; top: 55%; background: rgba(244, 114, 182, 0.6); box-shadow: 0 0 4px rgba(244, 114, 182, 0.6); animation: particle-float-3 12s ease-in-out infinite 0.3s; }
.particle:nth-child(13) { width: 5px; height: 5px; left: 30%; top: 85%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 10px rgba(59, 130, 246, 0.6); animation: particle-float-1 18s ease-in-out infinite 3.5s; }
.particle:nth-child(14) { width: 3px; height: 3px; left: 40%; top: 70%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 6px rgba(139, 92, 246, 0.6); animation: particle-float-2 13s ease-in-out infinite 1.8s; }
.particle:nth-child(15) { width: 4px; height: 4px; left: 50%; top: 90%; background: rgba(6, 182, 212, 0.6); box-shadow: 0 0 8px rgba(6, 182, 212, 0.6); animation: particle-float-3 15s ease-in-out infinite 2.2s; }
.particle:nth-child(16) { width: 3px; height: 3px; left: 60%; top: 45%; background: rgba(244, 114, 182, 0.6); box-shadow: 0 0 6px rgba(244, 114, 182, 0.6); animation: particle-float-1 17s ease-in-out infinite 0.6s; }
.particle:nth-child(17) { width: 4px; height: 4px; left: 70%; top: 95%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 8px rgba(59, 130, 246, 0.6); animation: particle-float-2 11s ease-in-out infinite 3.8s; }
.particle:nth-child(18) { width: 2px; height: 2px; left: 80%; top: 65%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 4px rgba(139, 92, 246, 0.6); animation: particle-float-3 14s ease-in-out infinite 1.1s; }
.particle:nth-child(19) { width: 5px; height: 5px; left: 90%; top: 85%; background: rgba(6, 182, 212, 0.6); box-shadow: 0 0 10px rgba(6, 182, 212, 0.6); animation: particle-float-1 16s ease-in-out infinite 2.6s; }
.particle:nth-child(20) { width: 3px; height: 3px; left: 3%; top: 45%; background: rgba(244, 114, 182, 0.6); box-shadow: 0 0 6px rgba(244, 114, 182, 0.6); animation: particle-float-2 19s ease-in-out infinite 0.9s; }
.particle:nth-child(21) { width: 4px; height: 4px; left: 12%; top: 65%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 8px rgba(59, 130, 246, 0.6); animation: particle-float-3 12s ease-in-out infinite 4.2s; }
.particle:nth-child(22) { width: 3px; height: 3px; left: 22%; top: 35%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 6px rgba(139, 92, 246, 0.6); animation: particle-float-1 15s ease-in-out infinite 1.4s; }
.particle:nth-child(23) { width: 5px; height: 5px; left: 32%; top: 95%; background: rgba(6, 182, 212, 0.6); box-shadow: 0 0 10px rgba(6, 182, 212, 0.6); animation: particle-float-2 18s ease-in-out infinite 3.2s; }
.particle:nth-child(24) { width: 2px; height: 2px; left: 42%; top: 25%; background: rgba(244, 114, 182, 0.6); box-shadow: 0 0 4px rgba(244, 114, 182, 0.6); animation: particle-float-3 13s ease-in-out infinite 0.7s; }
.particle:nth-child(25) { width: 4px; height: 4px; left: 52%; top: 80%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 8px rgba(59, 130, 246, 0.6); animation: particle-float-1 17s ease-in-out infinite 2.4s; }
.particle:nth-child(26) { width: 3px; height: 3px; left: 62%; top: 5%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 6px rgba(139, 92, 246, 0.6); animation: particle-float-2 14s ease-in-out infinite 1.6s; }
.particle:nth-child(27) { width: 4px; height: 4px; left: 72%; top: 55%; background: rgba(6, 182, 212, 0.6); box-shadow: 0 0 8px rgba(6, 182, 212, 0.6); animation: particle-float-3 16s ease-in-out infinite 3.6s; }
.particle:nth-child(28) { width: 3px; height: 3px; left: 82%; top: 40%; background: rgba(244, 114, 182, 0.6); box-shadow: 0 0 6px rgba(244, 114, 182, 0.6); animation: particle-float-1 11s ease-in-out infinite 0.4s; }
.particle:nth-child(29) { width: 5px; height: 5px; left: 92%; top: 70%; background: rgba(59, 130, 246, 0.6); box-shadow: 0 0 10px rgba(59, 130, 246, 0.6); animation: particle-float-2 19s ease-in-out infinite 2.9s; }
.particle:nth-child(30) { width: 2px; height: 2px; left: 8%; top: 95%; background: rgba(139, 92, 246, 0.6); box-shadow: 0 0 4px rgba(139, 92, 246, 0.6); animation: particle-float-3 13s ease-in-out infinite 1.9s; }

/* Hide particles on mobile for performance */
@media (max-width: 768px) {
  .particles-container {
    display: none;
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .particles-container {
    display: none;
  }
}

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: var(--space-16) var(--space-6);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.footer-content {
  max-width: var(--container-lg);
  margin: 0 auto;
  text-align: center;
}

.footer-quote {
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

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

/* ============================================
   Mobile Navigation
   ============================================ */

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero {
    padding: 100px var(--space-4) 60px;
  }
  
  .hero-avatar {
    width: 150px;
    height: 150px;
  }
  
  .hero-title {
    font-size: var(--text-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-lg);
  }
  
  .hero-description {
    font-size: var(--text-base);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .tech-categories {
    grid-template-columns: 1fr;
  }
  
  .contributions-grid {
    grid-template-columns: 1fr;
  }
  
  .typing-text {
    animation: none;
    white-space: normal;
    border: none;
  }
}

/* ============================================
   Utilities
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-8 { margin-top: var(--space-8); }
.mt-16 { margin-top: var(--space-16); }

.hidden { display: none; }