/* === Variables === */
:root {
  --bg-primary: #09090b;
  --bg-secondary: #18181b;
  --border: #27272a;
  --text-primary: #fafafa;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-dim: #52525b;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --accent-yellow: #eab308;
  --cta-bg: #fafafa;
  --cta-text: #09090b;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
  --max-width: 960px;
  --section-padding: 80px 24px;
}

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

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

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


.icon {
  vertical-align: -0.125em;
  margin-right: 6px;
}

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

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  text-align: center;
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 40px;
}

.section-subtitle-spacer {
  height: 32px;
}

.divider {
  height: 1px;
  background: var(--border);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* === Scroll Animation === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Nav === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(9, 9, 11, 0.85);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10px 24px;
}

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

.nav-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-link {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.nav-github-btn {
  font-size: 13px;
  color: var(--text-primary);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: background 0.2s;
}

.nav-github-btn:hover {
  background: var(--bg-secondary);
}

/* === Hero === */
.hero {
  text-align: center;
  padding: 140px 24px 80px;
}

.hero-title {
  font-size: 72px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -3px;
  line-height: 1.1;
  margin: 0 auto;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  margin-top: 20px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 32px;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: opacity 0.2s, background 0.2s;
  border: none;
  text-decoration: none;
}

.btn:hover {
  opacity: 0.9;
}

.btn-primary {
  background: var(--cta-bg);
  color: var(--cta-text);
}

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

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

/* === Terminal === */
.terminal-section {
  padding: 0 24px 80px;
}

.terminal {
  max-width: 520px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

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

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

.dot-red { background: var(--accent-red); }
.dot-yellow { background: var(--accent-yellow); }
.dot-green { background: var(--accent-green); }

.terminal-title {
  font-size: 12px;
  color: var(--text-dim);
  margin-left: 8px;
}

.terminal-body {
  padding: 0;
}

.terminal-img {
  width: 100%;
  display: block;
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

/* === Comparison === */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.comparison-card {
  background: var(--bg-secondary);
  border-radius: 10px;
  padding: 24px;
  border: 1px solid var(--border);
}

.comparison-rwd {
  border-color: rgba(250, 250, 250, 0.15);
}

.comparison-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.comparison-rwd .comparison-label {
  color: var(--text-primary);
}

.comparison-list {
  list-style: none;
  font-size: 14px;
  line-height: 2;
}

/* === Showcase === */
.showcase {
  padding: var(--section-padding);
}

.showcase-inner {
  display: grid;
  grid-template-columns: 45fr 55fr;
  gap: 40px;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.showcase-inner--reversed {
  direction: rtl;
}

.showcase-inner--reversed > * {
  direction: ltr;
}

.showcase-text {
  display: flex;
  flex-direction: column;
}

.showcase-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.showcase-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.showcase-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.showcase-desc code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
}

/* === Mockup Window === */
.mockup {
  background: var(--bg-secondary);
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

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

.mockup-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mockup-dots span:nth-child(1) { background: var(--accent-red); }
.mockup-dots span:nth-child(2) { background: var(--accent-yellow); }
.mockup-dots span:nth-child(3) { background: var(--accent-green); }

.mockup-title {
  font-size: 12px;
  color: var(--text-dim);
  margin-left: 8px;
}

.mockup-body {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.8;
}

/* Mockup variants */
.mockup-terminal .mockup-line {
  white-space: pre;
}

.mockup-note .mockup-body {
  font-family: var(--font-sans);
}

.mockup-note .md-heading {
  font-size: 15px;
}

.mockup-note .md-heading + .md-heading,
.mockup-body .md-heading:not(:first-child) {
  margin-top: 16px;
}

.mockup-code .mockup-body {
  font-size: 12px;
}

.mockup-obsidian .mockup-body {
  display: flex;
  padding: 0;
  font-family: var(--font-sans);
}

.mockup-sidebar {
  width: 35%;
  padding: 16px;
  background: var(--bg-primary);
  border-right: 1px solid var(--border);
  font-size: 13px;
  line-height: 2;
}

.mockup-sidebar-item {
  color: var(--text-dim);
  padding-left: 12px;
}

.mockup-sidebar-item--active {
  color: var(--text-primary);
  border-left: 2px solid var(--accent-green);
  padding-left: 10px;
}

.mockup-preview {
  width: 65%;
  padding: 16px 20px;
  font-size: 13px;
  line-height: 1.6;
}

/* Mockup inline colors */
.mc-dim { color: var(--text-dim); }
.mc-primary { color: var(--text-primary); }
.mc-green { color: var(--accent-green); }
.mc-muted { color: var(--text-muted); }
.mc-bold { color: var(--text-primary); font-weight: 600; }

/* Mockup spacing utilities */
.mockup-sep { margin: 12px 0; text-align: center; }
.mockup-gap { margin-top: 12px; }
.mockup-sidebar-label { margin-bottom: 4px; }

/* === Install === */
.install-blocks {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.install-block {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  gap: 16px;
}

.install-info {
  flex: 1;
  min-width: 0;
}

.install-platform {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.install-cmd {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  overflow-x: auto;
  white-space: nowrap;
}

.copy-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.copy-btn:hover {
  color: var(--text-secondary);
  border-color: var(--text-dim);
}

.copy-btn.copied {
  color: var(--accent-green);
  border-color: var(--accent-green);
}

.md-heading {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 8px;
}

.md-heading:first-child {
  margin-top: 0;
}

.md-text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === FAQ === */
.faq-list {
  max-width: 560px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 15px;
  font-family: var(--font-sans);
  cursor: pointer;
  text-align: left;
}

.faq-icon {
  font-size: 18px;
  color: var(--text-dim);
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding-bottom: 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* === Footer CTA === */
.footer-cta {
  text-align: center;
  padding: 80px 24px;
  border-top: 1px solid var(--border);
}

.footer-cta-title {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: 24px;
}

/* === Footer === */
.footer {
  padding: 48px 0 32px;
  font-size: 13px;
  color: var(--text-dim);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-logo {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: -0.5px;
}

.footer-nav {
  display: flex;
  gap: 20px;
}

.footer-nav a {
  font-size: 13px;
  color: var(--text-dim);
  transition: color 0.2s;
}

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

.footer-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

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

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

.footer-divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}

.footer-bottom {
  color: var(--text-dim);
}

/* === Responsive === */
@media (max-width: 640px) {
  .nav-github-btn span {
    display: none;
  }

  .hero {
    padding: 80px 24px 48px;
  }

  .hero-title {
    font-size: 42px;
    letter-spacing: -2px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .terminal-body {
    font-size: 11px;
    padding: 16px;
  }

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

  .footer-cta-title {
    font-size: 22px;
  }

  .showcase-inner {
    grid-template-columns: 1fr;
  }

  .showcase-inner--reversed {
    direction: ltr;
  }

  .showcase-inner .mockup {
    order: -1;
  }

  .showcase-title {
    font-size: 22px;
  }

  .mockup-obsidian .mockup-body {
    flex-direction: column;
  }

  .mockup-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .mockup-preview {
    width: 100%;
  }

  .mockup-body {
    overflow-x: auto;
  }
}