/* ============================================
   DESIGN SYSTEM — Park Hyungkwon Portfolio
   ============================================ */

/* --- Google Font --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Fira+Code:wght@400;500&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Color Palette — Deep Navy & Electric Accent */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.6);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-border: rgba(255, 255, 255, 0.08);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #3b82f6;
  --accent-secondary: #8b5cf6;
  --accent-tertiary: #06b6d4;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;

  --gradient-hero: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #06b6d4 100%);
  --gradient-card: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
  --gradient-text: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #22d3ee 100%);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-code: 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);
  --shadow-glow-accent: 0 0 30px rgba(59, 130, 246, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--accent-primary) var(--bg-secondary);
}

html::-webkit-scrollbar {
  width: 6px;
}

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

html::-webkit-scrollbar-thumb {
  background: var(--accent-primary);
  border-radius: var(--radius-full);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Background Effects --- */
.bg-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: -2;
  pointer-events: none;
}

.bg-gradient-orbs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.bg-gradient-orbs::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float-orb 20s ease-in-out infinite;
}

.bg-gradient-orbs::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: float-orb 25s ease-in-out infinite reverse;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -40px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--space-md) 0;
  transition: var(--transition-base);
  backdrop-filter: blur(0px);
}

.nav.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--bg-glass-border);
  box-shadow: var(--shadow-lg);
}

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

.nav-logo {
  font-size: var(--text-xl);
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.025em;
  text-decoration: none;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  position: relative;
  padding: var(--space-xs) 0;
  transition: var(--transition-base);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-hero);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

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

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

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: var(--space-sm);
}

.nav-mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
}

/* --- Section Layout --- */
.section {
  padding: var(--space-4xl) var(--space-xl);
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-primary);
  margin-bottom: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-full);
}

.section-label .dot {
  width: 6px;
  height: 6px;
  background: var(--accent-primary);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.6;
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-xl);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  animation: fadeInUp 0.6s ease-out;
}

.hero-badge .status-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-success);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.4);
}

.hero-name {
  font-size: clamp(var(--text-4xl), 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-name .gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title {
  font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.hero-stats {
  display: flex;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.hero-stat {
  text-align: left;
}

.hero-stat-value {
  font-size: var(--text-3xl);
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-xs);
  line-height: 1.4;
}

/* Y+3 통합 카드 — 3개 직무경험의 집약체 강조 */
.hero-stat-highlight {
  position: relative;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(59,130,246,0.08) 0%, rgba(139,92,246,0.08) 50%, rgba(6,182,212,0.08) 100%);
  border: 1px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 0 0 1.5px rgba(139,92,246,0.35), var(--shadow-glow);
  animation: highlight-pulse 3s ease-in-out infinite;
}

@keyframes highlight-pulse {
  0%, 100% { box-shadow: 0 0 0 1.5px rgba(139,92,246,0.35), 0 0 12px rgba(59,130,246,0.1); }
  50% { box-shadow: 0 0 0 2px rgba(139,92,246,0.6), 0 0 24px rgba(59,130,246,0.2); }
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  animation: fadeInUp 0.6s ease-out 0.5s both;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.875rem 1.75rem;
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-body);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  border: none;
  position: relative;
  overflow: hidden;
}

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

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

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

.btn-secondary:hover {
  background: var(--bg-glass);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* --- Career Timeline --- */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 14px;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary), transparent);
  border-radius: var(--radius-full);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-3xl);
  opacity: 0;
  transform: translateX(-20px);
  transition: var(--transition-slow);
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  border-radius: 50%;
  z-index: 1;
  transition: var(--transition-base);
}

.timeline-item:hover::before {
  background: var(--accent-primary);
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.5);
}

.timeline-item.current::before {
  background: var(--accent-success);
  border-color: var(--accent-success);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.5);
  animation: pulse-dot 2s ease-in-out infinite;
}

.timeline-period {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.timeline-role {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.timeline-company {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.timeline-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.8;
}

.timeline-highlights {
  list-style: none;
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.timeline-highlights li {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding-left: var(--space-lg);
  position: relative;
}

.timeline-highlights li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
  font-weight: 700;
}

/* --- Project Cards --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  transition: var(--transition-base);
  overflow: hidden;
  opacity: 0;
  transform: translateY(30px);
}

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

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

.project-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

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

/* Y+3 초대형 PJT 카드 강조 */
.project-card-featured {
  border-color: rgba(16, 185, 129, 0.25);
  background: linear-gradient(135deg, rgba(16,185,129,0.05) 0%, rgba(6,182,212,0.05) 100%);
}

.project-card-featured::before {
  background: linear-gradient(90deg, var(--accent-success), var(--accent-tertiary));
  opacity: 1 !important;
}

.project-card-featured:hover {
  border-color: rgba(16, 185, 129, 0.5);
  box-shadow: var(--shadow-xl), 0 0 30px rgba(16, 185, 129, 0.15);
}

.project-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.project-card-icon.blue {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-primary);
}

.project-card-icon.purple {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent-secondary);
}

.project-card-icon.cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-tertiary);
}

.project-card-icon.green {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-success);
}

.project-card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.project-card-period {
  font-size: var(--text-xs);
  color: var(--accent-primary);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.project-card-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.project-card-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.metric-badge {
  padding: var(--space-xs) var(--space-md);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent-primary);
}

.metric-badge.highlight {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.2);
  color: var(--accent-success);
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tag {
  padding: 3px 10px;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-code);
}

/* --- Skills Section --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  transition: var(--transition-base);
  opacity: 0;
  transform: translateY(20px);
}

.skill-category.visible {
  opacity: 1;
  transform: translateY(0);
}

.skill-category:hover {
  border-color: rgba(59, 130, 246, 0.2);
  box-shadow: var(--shadow-glow);
}

.skill-category-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.skill-name {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}

.skill-bar-bg {
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-bar {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--gradient-hero);
  width: 0;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Automation Section --- */
.automation-showcase {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.automation-showcase::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-hero);
}

.automation-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.automation-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(59, 130, 246, 0.2) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
}

.automation-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.automation-subtitle {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.7;
}

.pipeline-flow {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
  margin: var(--space-2xl) 0;
}

.pipeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  min-width: 120px;
  text-align: center;
  transition: var(--transition-base);
}

.pipeline-step:hover {
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.pipeline-step-icon {
  font-size: 1.75rem;
}

.pipeline-step-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
}

.pipeline-arrow {
  color: var(--accent-primary);
  font-size: var(--text-xl);
  font-weight: 700;
  animation: arrow-pulse 2s ease-in-out infinite;
}

@keyframes arrow-pulse {
  0%, 100% { opacity: 0.4; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(3px); }
}

.automation-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.auto-feature {
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.auto-feature-title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.auto-feature-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
}

/* --- Contact Section --- */
.contact-section {
  text-align: center;
  padding-bottom: var(--space-4xl);
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-3xl);
  max-width: 600px;
  margin: var(--space-2xl) auto 0;
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-hero);
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.contact-link:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
  background: rgba(59, 130, 246, 0.05);
  transform: translateX(4px);
}

.contact-link-icon {
  font-size: 1.25rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.contact-link-text {
  font-size: var(--text-sm);
  font-weight: 500;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: var(--space-xl);
  border-top: 1px solid var(--bg-glass-border);
  color: var(--text-muted);
  font-size: var(--text-xs);
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-md);
    border-bottom: 1px solid var(--bg-glass-border);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-mobile-toggle {
    display: flex;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: var(--space-xl);
  }

  .hero-actions {
    flex-direction: column;
  }

  .section {
    padding: var(--space-3xl) var(--space-md);
  }

  .section-title {
    font-size: var(--text-3xl);
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .pipeline-flow {
    flex-direction: column;
  }

  .pipeline-arrow {
    transform: rotate(90deg);
  }

  .automation-header {
    flex-direction: column;
  }

  .automation-showcase {
    padding: var(--space-xl);
  }

  .timeline {
    padding-left: 30px;
  }

  .timeline-item::before {
    left: -23px;
    width: 10px;
    height: 10px;
  }
}

@media (max-width: 480px) {
  .hero-name {
    font-size: var(--text-4xl);
  }

  .hero-stat-value {
    font-size: var(--text-2xl);
  }

  .project-card {
    padding: var(--space-xl);
  }
}