:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-card: #18181b;
  --bg-card-hover: #1f1f23;
  --bg-elevated: #27272a;

  --accent: #d4a853;
  --accent-dim: rgba(212, 168, 83, 0.15);
  --accent-secondary: #e8e0d0;
  --accent-warm: #d4a853;
  --accent-green: #10b981;

  --text-primary: #fafaf9;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-bright: #fafaf9;

  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(212, 168, 83, 0.3);
  --border-subtle: rgba(255, 255, 255, 0.03);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(212, 168, 83, 0.06);
  --shadow-accent: 0 4px 20px rgba(212, 168, 83, 0.15);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --font-sans: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-display: 'Syne', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --header-h: 72px;
  --section-gap: 120px;
  --container-max: 1200px;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
  font-weight: 400;
  letter-spacing: 0.01em;
}

::selection {
  background: rgba(212, 168, 83, 0.25);
  color: var(--text-bright);
}

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

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

::-webkit-scrollbar-thumb {
  background: rgba(212, 168, 83, 0.2);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(212, 168, 83, 0.35);
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes gradient-text-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 4px 16px rgba(212, 168, 83, 0.2); }
  50% { box-shadow: 0 4px 28px rgba(212, 168, 83, 0.35); }
}

@keyframes heroFade {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes subtle-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-warm) 40%, var(--text-bright) 100%);
  background-size: 200% 200%;
  animation: gradient-text-shift 5s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: transform 0.35s var(--ease-out-expo), box-shadow 0.35s ease, background 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.06) 50%, transparent 70%);
  background-size: 200% 100%;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.btn:hover::after {
  opacity: 1;
  animation: shimmer 0.8s ease forwards;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(212, 168, 83, 0.3);
}

.btn-primary.pulse {
  animation: pulse-glow 2.5s ease-in-out infinite;
}

.btn-secondary {
  background: transparent;
  color: var(--accent-secondary);
  border: 1.5px solid rgba(232, 224, 208, 0.2);
}

.btn-secondary:hover {
  border-color: rgba(232, 224, 208, 0.4);
  background: rgba(232, 224, 208, 0.04);
  transform: translateY(-2px);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

section {
  padding: var(--section-gap) 24px;
  position: relative;
  contain: layout style;
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 16px;
  color: var(--text-bright);
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-divider {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 1px;
  margin: 20px auto 0;
}

.project-card, .skill-card, .contact-card, .about-tag, .btn {
  will-change: transform;
  transform: translateZ(0);
}

.skill-bar-fill {
  will-change: width;
}

.project-card, .skill-card {
  contain: layout style paint;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 80px;
    --header-h: 64px;
  }
}

@media (max-width: 480px) {
  :root {
    --section-gap: 64px;
  }

  .section-header {
    margin-bottom: 48px;
  }

  .btn {
    padding: 12px 24px;
    font-size: 0.85rem;
  }
}