/* monkeytab.app — main stylesheet
 * Clean, light, the whole site is laid out on a ghost spreadsheet grid. */

:root {
  --color-bg: #ffffff;
  --color-surface: #fafafa;
  --color-text: #111827;
  --color-text-muted: #6b7280;
  --color-text-subtle: #9ca3af;
  --color-border: #e5e7eb;
  --color-grid: #f3f4f6;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-bg: #eff6ff;
  --color-monkey: #f59e0b;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', Menlo, Monaco, Consolas, monospace;
  --content-max: 1100px;
  --cell-w: 180px;
  --cell-h: 32px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Ghost spreadsheet background ──────────────────────────────────────── */
/* The whole site sits on a faint cell grid — same look as the ghostGrid
 * feature in MonkeyTable. Subtle, atmospheric, on every page. */
.ghost-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--color-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-grid) 1px, transparent 1px);
  background-size: var(--cell-w) var(--cell-h);
  background-position: 0 64px; /* offset so it lines up under the header */
  pointer-events: none;
}

/* ─── Site chrome ───────────────────────────────────────────────────────── */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-link {
  font-size: 14px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

main {
  min-height: calc(100vh - 64px - 240px);
}

/* ─── Hero ──────────────────────────────────────────────────────────────── */

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  max-width: var(--content-max);
  margin: 64px auto 96px;
  padding: 0 32px;
  align-items: center;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
  color: var(--color-text);
}

.hero-emphasis {
  color: var(--color-accent);
  position: relative;
  display: inline-block;
}

.hero-emphasis::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 8px;
  background: var(--color-accent-bg);
  z-index: -1;
  border-radius: 2px;
}

.hero-tagline {
  font-size: 20px;
  color: var(--color-text-muted);
  margin: 0 0 32px;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.hero-install {
  display: inline-block;
  padding: 12px 16px;
  background: var(--color-text);
  color: #fafafa;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
}

.hero-install code {
  color: inherit;
  background: none;
  padding: 0;
}

.hero-secondary {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--color-text-subtle);
  font-style: italic;
}

.hero-secondary em {
  color: var(--color-text-muted);
  font-style: normal;
  font-weight: 600;
}

.hero-stage {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.15);
}

.hero-stage canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* Fallback shown before Phaser loads / if JS is disabled */
.hero-stage-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.fallback-table {
  width: 100%;
  max-width: 360px;
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  overflow: hidden;
}

.ft-header,
.ft-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-grid);
}

.ft-header {
  background: var(--color-surface);
  font-weight: 600;
  color: var(--color-text-muted);
}

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

/* ─── Buttons ───────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: white;
  color: var(--color-text);
  border-color: var(--color-border);
}

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

/* ─── Features ──────────────────────────────────────────────────────────── */

.features {
  max-width: var(--content-max);
  margin: 96px auto;
  padding: 0 32px;
}

.features-intro {
  text-align: center;
  margin-bottom: 64px;
}

.features-intro h2 {
  font-size: 36px;
  font-weight: 800;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.features-intro p {
  font-size: 18px;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  transition: all 0.2s;
}

.feature:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -12px rgba(37, 99, 235, 0.2);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.feature h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
}

.feature p {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ─── Install code block on landing ─────────────────────────────────────── */

.install {
  max-width: var(--content-max);
  margin: 96px auto;
  padding: 0 32px;
  text-align: center;
}

.install h2 {
  font-size: 36px;
  font-weight: 800;
  margin: 0 0 32px;
  letter-spacing: -0.02em;
}

.code-block {
  text-align: left;
  background: #0f172a;
  color: #e2e8f0;
  padding: 24px 32px;
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
  margin: 0 auto;
  max-width: 800px;
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.3);
}

.install-cta {
  margin-top: 32px;
}

/* ─── Why MonkeyTab ─────────────────────────────────────────────────────── */

.why {
  max-width: var(--content-max);
  margin: 96px auto;
  padding: 0 32px;
}

.why h2 {
  font-size: 36px;
  font-weight: 800;
  margin: 0 0 48px;
  text-align: center;
  letter-spacing: -0.02em;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.why-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px;
}

.why-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
}

/* ─── Footer ────────────────────────────────────────────────────────────── */

.site-footer {
  background: var(--color-text);
  color: #d1d5db;
  padding: 64px 32px 32px;
  margin-top: 96px;
}

.footer-grid {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-grid strong {
  display: block;
  color: white;
  font-size: 18px;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 14px;
  color: #9ca3af;
}

.footer-grid h4 {
  color: white;
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-grid a {
  display: block;
  color: #9ca3af;
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 6px;
  transition: color 0.15s;
}

.footer-grid a:hover {
  color: white;
}

.footer-bottom {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid #374151;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: #6b7280;
}

/* ─── Docs shell (sidebar + content) ────────────────────────────────────── */

.docs-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 32px 96px;
  gap: 48px;
  align-items: start;
}

.docs-sidebar {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 16px;
}

.sidebar-section {
  margin-bottom: 24px;
}

.sidebar-section h4 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
  margin: 0 0 8px;
  padding: 0 12px;
}

.sidebar-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-link {
  display: block;
  padding: 6px 12px;
  font-size: 14px;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.12s;
  border-left: 2px solid transparent;
}

.sidebar-link:hover {
  color: var(--color-text);
  background: var(--color-grid);
}

.sidebar-link-active {
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border-left-color: var(--color-accent);
  font-weight: 600;
}

.docs-content {
  min-width: 0; /* prevent grid blowout */
}

/* ─── Doc pages (markdown content) ──────────────────────────────────────── */

.doc-page {
  max-width: 760px;
}

.doc-page.markdown-body {
  background: white;
  padding: 48px 56px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 8px 32px -16px rgba(0, 0, 0, 0.06);
}

/* Override gfm.css defaults to match site palette */
.markdown-body {
  font-family: var(--font-sans) !important;
  color: var(--color-text) !important;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  color: var(--color-text) !important;
  border-bottom: none !important;
}

.markdown-body code {
  background: var(--color-grid) !important;
  color: var(--color-text) !important;
  font-family: var(--font-mono) !important;
}

.markdown-body pre {
  background: #0f172a !important;
  border: none !important;
}

.markdown-body pre code {
  background: none !important;
  color: #e2e8f0 !important;
}

.markdown-body a {
  color: var(--color-accent) !important;
}

.doc-index ul {
  list-style: none;
  padding: 0;
}

.doc-index li {
  border-bottom: 1px solid var(--color-grid);
}

.doc-index a {
  display: block;
  padding: 16px 0;
  text-transform: capitalize;
  color: var(--color-text);
  text-decoration: none;
  font-size: 16px;
}

.doc-index a:hover {
  color: var(--color-accent);
}

/* ─── Not found ─────────────────────────────────────────────────────────── */

.not-found {
  text-align: center;
  padding: 96px 32px;
}

.not-found h1 {
  font-size: 96px;
  margin: 0;
  color: var(--color-text-subtle);
  font-weight: 800;
}

.not-found p {
  font-size: 18px;
  color: var(--color-text-muted);
  margin: 8px 0 32px;
}

/* ─── Responsive ────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .docs-shell {
    grid-template-columns: 1fr;
    padding: 16px;
    gap: 24px;
  }

  .docs-sidebar {
    position: static;
    max-height: none;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 16px;
  }

  .doc-page.markdown-body {
    padding: 24px;
  }
}

@media (max-width: 800px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-title {
    font-size: 40px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}