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

:root {
  --bg: #09090b;
  --bg-subtle: #111113;
  --bg-card: #18181b;
  --bg-card-hover: #1e1e22;
  --border: #27272a;
  --border-subtle: #1e1e22;
  --text: #fafafa;
  --text-muted: #a1a1aa;
  --text-dim: #71717a;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --gradient-start: #6366f1;
  --gradient-mid: #a855f7;
  --gradient-end: #ec4899;
  --radius: 12px;
  --radius-sm: 8px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* ─── Container ───────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Nav ─────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 24px;
  transition: all 0.3s ease;
}

.nav-scrolled {
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1rem;
}

.nav-logo-icon {
  font-size: 1.2rem;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-github {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-github:hover {
  background: var(--bg-card);
  border-color: var(--text-dim);
}

/* ─── Hero ────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(
    ellipse at center,
    rgba(99, 102, 241, 0.12) 0%,
    rgba(168, 85, 247, 0.06) 40%,
    transparent 70%
  );
  pointer-events: none;
  animation: glow-pulse 6s ease-in-out infinite alternate;
}

@keyframes glow-pulse {
  0% { opacity: 0.8; transform: translateX(-50%) scale(1); }
  100% { opacity: 1; transform: translateX(-50%) scale(1.1); }
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 24px;
}

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

@keyframes dot-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-gradient {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 40px;
}

/* ─── Terminal ────────────────────────────────────── */
.hero-terminal {
  max-width: 520px;
  margin: 0 auto 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-subtle);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.03),
    0 20px 60px rgba(0, 0, 0, 0.5);
}

.terminal-header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

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

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #ef4444; }
.dot.yellow { background: #f59e0b; }
.dot.green { background: #22c55e; }

.terminal-title {
  flex: 1;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.terminal-copy {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.terminal-copy:hover {
  color: var(--text);
  background: var(--bg-subtle);
}

.terminal-body {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.terminal-prompt {
  color: var(--accent-light);
  font-weight: 600;
}

.terminal-command {
  color: var(--text);
}

.terminal-cursor {
  width: 8px;
  height: 20px;
  background: var(--accent-light);
  border-radius: 1px;
  animation: blink 1s step-end infinite;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font);
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
  color: white;
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.5);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-dim);
  transform: translateY(-1px);
}

/* ─── Animations ──────────────────────────────────── */
.animate-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fade-up 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }

@keyframes fade-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Sections ────────────────────────────────────── */
.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ─── Features Grid ───────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  opacity: 0;
  transform: translateY(20px);
}

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

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--text-dim);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.feature-card code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--accent-light);
}

/* ─── Steps ───────────────────────────────────────── */
.steps {
  max-width: 600px;
  margin: 0 auto 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  opacity: 0;
  transform: translateX(-20px);
  transition: all 0.5s ease;
}

.step.visible {
  opacity: 1;
  transform: translateX(0);
}

.step-number {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  margin-top: 2px;
}

.step-content {
  flex: 1;
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent-light);
  overflow-x: auto;
}

.code-block.compact {
  padding: 12px 14px;
  font-size: 0.8rem;
  white-space: pre;
}

.endpoints {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.endpoint {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.endpoint-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-light);
  min-width: 60px;
}

.endpoint-url {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* ─── CLI Options ─────────────────────────────────── */
.cli-options {
  max-width: 600px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
}

.cli-options.visible {
  opacity: 1;
  transform: translateY(0);
}

.cli-options h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-align: center;
}

.options-table {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.option-row code {
  color: var(--accent-light);
  font-size: 0.825rem;
  min-width: 220px;
}

.option-row span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ─── Structure ───────────────────────────────────── */
.structure-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 32px;
  align-items: start;
}

.structure-code {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
}

.structure-code.visible {
  opacity: 1;
  transform: translateY(0);
}

.code-window {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-subtle);
}

.code-window-header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.code-window-title {
  flex: 1;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.code-window-body {
  padding: 20px 24px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  color: var(--text-muted);
  overflow-x: auto;
}

.code-window-body .folder { color: #60a5fa; font-weight: 600; }
.code-window-body .file { color: var(--text); }
.code-window-body .comment { color: var(--text-dim); }
.code-window-body .highlight { color: #34d399; }

.structure-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
}

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

.info-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.info-card ol {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.info-card ol li {
  counter-increment: step;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-card ol li::before {
  content: counter(step);
  width: 22px;
  height: 22px;
  min-width: 22px;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
}

.info-card code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--accent-light);
}

/* ─── CTA ─────────────────────────────────────────── */
.section-cta {
  position: relative;
  padding: 100px 0;
  overflow: hidden;
}

.section-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(
    ellipse at center,
    rgba(99, 102, 241, 0.08) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.cta-content {
  text-align: center;
  position: relative;
}

.cta-content h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.cta-content p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.cta-code {
  max-width: 420px;
  margin: 0 auto 32px;
  text-align: left;
}

.cta-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ─── Footer ──────────────────────────────────────── */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  font-size: 0.825rem;
  color: var(--text-dim);
}

.footer a {
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

/* ─── Responsive ──────────────────────────────────── */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .structure-layout {
    grid-template-columns: 1fr;
  }

  .nav-links a:not(.nav-github) {
    display: none;
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 100px 16px 60px;
  }

  .terminal-body {
    font-size: 0.82rem;
    padding: 16px;
  }

  .option-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .option-row code {
    min-width: unset;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .section {
    padding: 60px 0;
  }
}