/* ==========================================================================
   SharePaste — Product-Matching Minimalist Marketing Stylesheet
   Crafted to match the exact dark monochrome design language of the SharePaste editor.
   Zero neon slop, zero gaudy gradients. Pure, authoritative developer tooling.
   ========================================================================== */

:root {
  --bg-page: #050505;
  --bg-card: #0d0d10;
  --bg-card-hover: #121216;
  --bg-input: #09090b;

  --border-subtle: #202024;
  --border-medium: #27272a;
  --border-hover: #3f3f46;

  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  --accent-emerald: #10b981;
  --accent-cyan: #38bdf8;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Menlo', 'Monaco', 'Consolas', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-secondary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: #27272a;
  color: #ffffff;
}

/* Subtle engineering dot pattern (no blur, no colored aurora) */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   Navigation Bar (Identical to SharePaste App Header)
   -------------------------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 5, 5, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-medium);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon-box {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: #18181b;
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  color: #e4e4e7;
}

.brand-name {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: #d4d4d8;
}

.version-badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-muted);
  background: #121215;
  border: 1px solid var(--border-subtle);
  padding: 1px 6px;
  border-radius: 4px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-menu-link {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
  letter-spacing: 0.02em;
}

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

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

.btn-icon-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 12.5px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-icon-nav:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
  background: rgba(255, 255, 255, 0.03);
}

.btn-app-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: #000000;
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.15s ease;
}

.btn-app-nav:hover {
  background: #e4e4e7;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: 72px 0 54px;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 9999px;
  background: #111114;
  border: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.hero-tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-secondary);
}

.hero-title {
  font-size: clamp(2.2rem, 4.8vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.hero-title-sub {
  color: var(--text-muted);
  display: block;
}

.hero-desc {
  max-width: 640px;
  margin: 0 auto 32px;
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.hero-cta-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.btn-primary-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: #000000;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.16s ease;
}

.btn-primary-white:hover {
  background: #e4e4e7;
  transform: translateY(-1px);
}

.btn-secondary-zinc {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  background: #111114;
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.16s ease;
}

.btn-secondary-zinc:hover {
  border-color: var(--border-hover);
  background: #18181c;
}

.hero-note {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 48px;
}

/* --------------------------------------------------------------------------
   Staged Authentic UI Showcase (High-DPI Screenshots)
   -------------------------------------------------------------------------- */
.showcase-stage {
  max-width: 820px;
  margin: 0 auto;
}

.browser-mockup {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

.browser-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: #101013;
  border-bottom: 1px solid var(--border-subtle);
}

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

.browser-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #27272a;
}

.browser-title {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.showcase-img {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: -webkit-optimize-contrast;
}

/* Satellite feature grid below hero */
.showcase-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.feature-frame-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: left;
  transition: border-color 0.2s ease;
}

.feature-frame-card:hover {
  border-color: var(--border-medium);
}

.feature-frame-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.feature-frame-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.feature-frame-badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 2px 6px;
  border-radius: 4px;
  background: #141418;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.feature-frame-img {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  display: block;
  image-rendering: -webkit-optimize-contrast;
}

/* --------------------------------------------------------------------------
   Sections General
   -------------------------------------------------------------------------- */
.section-pad {
  padding: 84px 0;
}

.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 48px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 10px;
  display: inline-block;
  font-weight: 600;
}

.section-title {
  font-size: clamp(1.8rem, 3.4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.22;
  color: var(--text-primary);
  margin-bottom: 12px;
}

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

/* --------------------------------------------------------------------------
   Live Zstandard Compression Benchmark Sandbox
   -------------------------------------------------------------------------- */
.sandbox-box {
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

.sandbox-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 12px;
}

.sandbox-presets {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.preset-chip {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  background: #111114;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

.preset-chip:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.preset-chip.active {
  background: #1f1f24;
  border-color: var(--border-hover);
  color: var(--text-primary);
  font-weight: 600;
}

.sandbox-body {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 22px;
}

.sandbox-input-area {
  display: flex;
  flex-direction: column;
}

.sandbox-textarea {
  width: 100%;
  height: 250px;
  background: var(--bg-input);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: #e4e4e7;
  resize: vertical;
  outline: none;
  transition: border-color 0.18s ease;
}

.sandbox-textarea:focus {
  border-color: var(--border-hover);
}

.sandbox-metrics {
  background: #101013;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.metric-row:last-of-type {
  border-bottom: none;
}

.metric-name {
  font-size: 12.5px;
  color: var(--text-muted);
}

.metric-val {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.metric-val.highlight {
  color: #34d399;
}

.metric-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  background: #18181c;
  border: 1px solid var(--border-medium);
  color: #e4e4e7;
}

.sandbox-footer-action {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
}

.btn-open-sandbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  background: #1c1c21;
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-size: 12.5px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-open-sandbox:hover {
  background: #27272e;
  border-color: var(--border-hover);
}

/* --------------------------------------------------------------------------
   Bento Grid: System Architecture
   -------------------------------------------------------------------------- */
.bento-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.bento-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
}

.bento-item:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
}

.bento-item.span-2 {
  grid-column: span 2;
}

.bento-icon-box {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: #141418;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.bento-item-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.bento-item-text {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.62;
  margin-bottom: 20px;
}

.bento-item-tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  background: #141418;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Keyboard Shortcuts Cheat Sheet
   -------------------------------------------------------------------------- */
.shortcuts-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.shortcut-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.shortcut-row:last-child {
  border-bottom: none;
}

.shortcut-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.shortcut-sub {
  font-size: 12px;
  color: var(--text-muted);
}

.shortcut-keys {
  display: flex;
  align-items: center;
  gap: 5px;
}

kbd {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 3px 8px;
  border-radius: 4px;
  background: #16161a;
  border: 1px solid var(--border-medium);
  color: #e4e4e7;
}

/* --------------------------------------------------------------------------
   FAQ Accordion
   -------------------------------------------------------------------------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.16s ease;
}

.faq-card.open {
  border-color: var(--border-medium);
}

.faq-question-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
}

.faq-icon-svg {
  width: 16px;
  height: 16px;
  stroke: var(--text-muted);
  transition: transform 0.2s ease;
}

.faq-card.open .faq-icon-svg {
  transform: rotate(180deg);
  stroke: var(--text-primary);
}

.faq-answer-body {
  display: none;
  padding: 0 22px 18px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.faq-card.open .faq-answer-body {
  display: block;
}

.faq-answer-body code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: #16161a;
  padding: 2px 6px;
  border-radius: 4px;
  color: #e4e4e7;
}

/* --------------------------------------------------------------------------
   Bottom CTA Panel
   -------------------------------------------------------------------------- */
.bottom-cta {
  background: #0d0d10;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 56px 28px;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 38px 0;
  font-size: 12.5px;
  color: var(--text-muted);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

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

.footer-link-item {
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  transition: color 0.15s ease;
}

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

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .showcase-features-grid {
    grid-template-columns: 1fr;
  }
  .sandbox-body {
    grid-template-columns: 1fr;
  }
  .bento-row {
    grid-template-columns: 1fr;
  }
  .bento-item.span-2 {
    grid-column: span 1;
  }
  .nav-menu {
    display: none;
  }
}