/* === Variables === */
:root {
  --bg: #09090b;
  --bg-elevated: #18181b;
  --border: #27272a;
  --border-hover: #3f3f46;
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-tertiary: #52525b;
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.15);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

::selection {
  background: var(--accent);
  color: var(--bg);
}

html { scroll-behavior: smooth; }

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { text-decoration: underline; }

code { font-family: var(--font-mono); }

img { max-width: 100%; height: auto; }

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Background System (3 layers) === */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -3;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 30%, transparent 80%);
}

.ambient-aura {
  position: fixed;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  z-index: -2;
  animation: breathe 12s ease-in-out infinite;
  pointer-events: none;
}

@keyframes breathe {
  0%, 100% { opacity: 0.4; transform: translateX(-50%) scale(1); }
  50% { opacity: 0.7; transform: translateX(-50%) scale(1.1); }
}

.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
  mix-blend-mode: screen;
}

/* === Scroll Reveal === */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* === Hero === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 24px;
}

.hero-repo {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
  transition: border-color 0.2s, color 0.2s;
}

.hero-repo:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  min-height: 2.4em;
}

.hero h1 .line {
  display: block;
}

.hero h1 .accent {
  color: var(--accent);
}

.cursor-blink {
  color: var(--accent);
  animation: blink 1s step-end infinite;
  font-weight: 400;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 540px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.cli-install {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  margin-bottom: 24px;
}

.cli-prompt { color: var(--accent); }

.cli-install code { color: var(--text-primary); }

.cli-install button {
  background: var(--border);
  border: none;
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  transition: background 0.2s, color 0.2s;
}

.cli-install button:hover {
  background: var(--accent);
  color: var(--bg);
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-weight: 500;
  transition: border-color 0.2s, background 0.2s;
}

.hero-cta:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  text-decoration: none;
}

.hero-cta-secondary {
  color: var(--text-secondary);
}

.btn-icon {
  flex-shrink: 0;
}

/* === Sections (shared) === */
.section {
  padding: 120px 0;
}

.section-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 48px;
}

/* === Preview (Screenshot) === */
.preview-container {
  max-width: 900px;
  margin: 0 auto;
}

.preview-frame {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-elevated);
  box-shadow: 0 0 80px var(--accent-glow);
}

.preview-dots {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.preview-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-hover);
}

.preview-frame img {
  width: 100%;
  display: block;
}

/* === Bento Grid === */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.bento-box {
  background: rgba(9, 9, 11, 0.95);
  padding: 32px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background 0.3s;
}

.bento-box:hover {
  background: rgba(24, 24, 27, 0.95);
}

.bento-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 12px;
}

.bento-box h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.bento-box p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.bento-box code {
  color: var(--accent);
  font-size: 0.85rem;
}

/* === Install Terminal === */
.install-terminal {
  max-width: 600px;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.03);
}

.term-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.term-dots {
  display: flex;
  gap: 6px;
}

.term-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-hover);
}

.term-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.term-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.term-line {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: baseline;
}

.term-line:last-child { margin-bottom: 0; }

.term-prompt { color: var(--accent); }

.term-cmd { color: var(--text-primary); }

.term-comment {
  color: var(--text-tertiary);
  font-size: 0.8rem;
}

.term-output {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  margin-bottom: 8px;
  padding-left: 20px;
}

.term-line.dim { opacity: 0.6; }

/* === Footer === */
footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

footer a { color: var(--text-secondary); }
footer a:hover { color: var(--accent); }

/* === Responsive === */
@media (max-width: 768px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 10vw, 3.5rem);
    min-height: 3em;
  }

  .section {
    padding: 80px 0;
  }

  .cli-install {
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    font-size: 0.85rem;
  }

  .section-desc {
    font-size: 1rem;
  }

  .term-body {
    font-size: 0.8rem;
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .bento-box {
    padding: 24px;
  }

  .container {
    padding: 0 16px;
  }
}

@media (hover: none) {
  .cursor-glow { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .ambient-aura { animation: none; opacity: 0.5; }
  .cursor-blink { animation: none; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}