/*
 * site.css — Uptrakit website phase 1.
 * Mirrors the product design tokens from docs/development/ui/tokens.md.
 * No Tailwind, no preprocessor.
 */

/* ---------- Tokens (dark default) ---------- */

:root,
[data-theme="dark"] {
  --bg-base: #09090b;
  --bg-surface: #111113;
  --bg-raised: #18181b;
  --bg-hover: #1e1e22;
  --border-subtle: #1c1c1f;
  --border-default: #27272a;
  --text-muted: #52525b;
  --text-secondary: #a1a1aa;
  --text-primary: #e4e4e7;
  --text-inverted: #fafafa;
  --accent: #06b6d4;
  --accent-rgb: 6 182 212;
  --accent-bright: #22d3ee;
  --accent-dark: #0891b2;
  --accent-deep: #0e7490;
  --color-success: #4ade80;
  --color-success-bg: rgba(74, 222, 128, 0.10);
  --color-success-border: rgba(74, 222, 128, 0.25);
  --color-warning: #fbbf24;
  --color-warning-bg: rgba(251, 191, 36, 0.12);
  --color-warning-border: rgba(251, 191, 36, 0.30);
  --color-danger: #fdba74;
  --color-danger-bg: rgba(234, 88, 12, 0.15);
  --color-danger-border: rgba(234, 88, 12, 0.35);
  --color-info: #67e8f9;
  --color-info-bg: rgba(6, 182, 212, 0.10);
  --color-info-border: rgba(6, 182, 212, 0.22);
}

[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-raised: #f1f5f9;
  --bg-hover: #eef1f5;
  --border-subtle: #e2e8f0;
  --border-default: #cbd5e1;
  --text-muted: #94a3b8;
  --text-secondary: #64748b;
  --text-primary: #0f172a;
  --text-inverted: #ffffff;
  --accent: #2563eb;
  --accent-rgb: 37 99 235;
  --accent-bright: #3b82f6;
  --accent-dark: #1d4ed8;
  --accent-deep: #1e40af;
  --color-success: #16a34a;
  --color-success-bg: rgba(22, 163, 74, 0.08);
  --color-success-border: rgba(22, 163, 74, 0.30);
  --color-warning: #d97706;
  --color-warning-bg: rgba(217, 119, 6, 0.08);
  --color-warning-border: rgba(217, 119, 6, 0.28);
  --color-danger: #dc2626;
  --color-danger-bg: rgba(220, 38, 38, 0.07);
  --color-danger-border: rgba(220, 38, 38, 0.30);
  --color-info: #0891b2;
  --color-info-bg: rgba(8, 145, 178, 0.08);
  --color-info-border: rgba(8, 145, 178, 0.22);
}

/* ---------- Reset + base ---------- */

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

html {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-primary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main.content {
  flex: 1 0 auto;
  width: 100%;
  max-width: 880px;
  padding: 32px 20px 64px;
  margin: 0 auto;
}

a {
  color: var(--accent-bright);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

a:hover {
  border-bottom-color: var(--accent);
}

a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.25);
  border-radius: 2px;
}

code {
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  font-size: 0.92em;
  background: var(--bg-raised);
  padding: 1px 6px;
  border-radius: 2px;
}

pre {
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
}

pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

/* ---------- Typography ---------- */

h1, h2, h3 {
  margin: 0 0 12px;
  color: var(--text-primary);
}

h1 {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.25;
}

h2 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.35;
}

h3 {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.4;
}

p {
  margin: 0 0 14px;
  color: var(--text-secondary);
}

p strong {
  color: var(--text-primary);
}

.eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 8px;
}

ul, ol {
  margin: 0 0 14px;
  padding-left: 22px;
  color: var(--text-secondary);
}

li + li {
  margin-top: 4px;
}

hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: 32px 0;
}

/* ---------- Top bar ---------- */

.topbar {
  /* Spec: non-sticky in phase 1; landing is short. */
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-subtle);
}

.topbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  border-bottom: none;
}

.topbar__brand:hover {
  border-bottom: none;
  color: var(--text-primary);
}

.topbar__logo {
  display: block;
  width: 24px;
  height: 24px;
}

.topbar__wordmark {
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text-primary);
}

.topbar__nav {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.topbar__link {
  font-size: 13px;
  color: var(--text-secondary);
  border-bottom: none;
}

.topbar__link:hover {
  color: var(--text-primary);
  border-bottom: none;
}

.topbar__theme-toggle {
  font-family: inherit;
  font-size: 14px;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.topbar__theme-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.topbar__theme-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.25);
}

/* ---------- Footer ---------- */

.footer {
  flex: 0 0 auto;
  padding: 24px 20px 32px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}

.footer p {
  margin: 0;
  color: var(--text-muted);
}

/* ---------- Layout primitives ---------- */

.section {
  margin: 40px 0;
}

.section__heading {
  margin-bottom: 16px;
}

.grid {
  display: grid;
  gap: 14px;
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 640px) {
  .grid--2,
  .grid--4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  padding: 16px 18px;
}

.card__title {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}

.card__body {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

/* ---------- Hero ---------- */

.hero {
  padding: 24px 0 12px;
}

.hero__title {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 12px;
}

.hero__sub {
  font-size: 15px;
  margin: 0 0 24px;
  color: var(--text-secondary);
}

.hero__ctas {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 8px 14px;
  border-radius: 3px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  border-bottom: 1px solid transparent;
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.25);
}

.btn--primary {
  background: var(--accent);
  color: var(--text-inverted);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: var(--text-inverted);
}

.btn--secondary {
  background: var(--bg-raised);
  color: var(--text-primary);
  border-color: var(--border-default);
}

.btn--secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-default);
  color: var(--text-primary);
}

/* ---------- Callouts ---------- */

.callout {
  padding: 12px 14px;
  border-radius: 4px;
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  margin: 16px 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.callout--warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning-border);
  color: var(--text-primary);
}

.callout--info {
  background: var(--color-info-bg);
  border-color: var(--color-info-border);
  color: var(--text-primary);
}

.callout--success {
  background: var(--color-success-bg);
  border-color: var(--color-success-border);
  color: var(--text-primary);
}

.callout--danger {
  background: var(--color-danger-bg);
  border-color: var(--color-danger-border);
  color: var(--text-primary);
}

.callout__title {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 4px;
  color: var(--text-primary);
}

/* ---------- Will / Won't block ---------- */

.willwont {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 640px) {
  .willwont { grid-template-columns: 1fr; }
}

.willwont__col {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  padding: 16px 18px;
}

.willwont__col h3 {
  margin: 0 0 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.willwont__col--will h3 { color: var(--color-success); }
.willwont__col--wont h3 { color: var(--color-danger); }

.willwont__col ul {
  margin: 0;
  padding-left: 18px;
}

/* ---------- Screenshots block ---------- */

.screenshots {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 640px) {
  .screenshots { grid-template-columns: 1fr; }
}

.screenshot {
  margin: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.screenshot a {
  display: block;
  border-bottom: 1px solid var(--border-subtle);
  line-height: 0;
}

.screenshot img {
  display: block;
  width: 100%;
  height: auto;
}

.screenshot figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* ---------- Lightbox ---------- */

.lightbox {
  border: 1px solid var(--border-default);
  border-radius: 4px;
  background: var(--bg-raised);
  color: var(--text-primary);
  padding: 0;
  max-width: min(96vw, 1400px);
  max-height: 92vh;
  width: auto;
}

.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.78);
}

.lightbox__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.lightbox__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: calc(92vh - 48px);
  object-fit: contain;
  background: #000;
  cursor: zoom-out;
}

.lightbox__caption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
}

.lightbox__close,
.lightbox__nav {
  position: absolute;
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__close { top: 8px; right: 8px; }
.lightbox__nav--prev { top: 50%; left: 8px; transform: translateY(-50%); }
.lightbox__nav--next { top: 50%; right: 8px; transform: translateY(-50%); }

.lightbox__close:hover,
.lightbox__nav:hover { border-color: var(--text-secondary); }

/* ---------- Topology block ---------- */

.topology {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 3px;
  padding: 16px 18px;
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-secondary);
  overflow-x: auto;
  white-space: pre;
}

/* ---------- Install page extras ---------- */

.install-step {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.install-step__num {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 2px;
  background: var(--bg-raised);
  border: 1px solid var(--border-default);
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-bright);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.install-step__body p {
  margin: 0 0 6px;
}

/* ========== Syntax highlight override ========== */

/* base16-ocean-dark tokens are always dark regardless of theme.
   Override the pre container to use design tokens. */
pre {
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 14px 16px;
  overflow-x: auto;
  line-height: 1.5;
  font-size: 12px;
}

/* ========== GFM alert styles ========== */

.markdown-alert-note,
.markdown-alert-tip,
.markdown-alert-important,
.markdown-alert-warning,
.markdown-alert-caution {
  border-left: 3px solid;
  border-radius: 0 3px 3px 0;
  padding: 10px 14px;
  margin: 16px 0;
}

.markdown-alert-note {
  background: var(--color-info-bg);
  border-color: var(--color-info-border);
}

.markdown-alert-tip {
  background: var(--color-success-bg);
  border-color: var(--color-success-border);
}

.markdown-alert-important {
  background: var(--color-warning-bg);
  border-color: var(--color-warning-border);
}

.markdown-alert-warning {
  background: var(--color-warning-bg);
  border-color: var(--color-warning-border);
}

.markdown-alert-caution {
  background: var(--color-danger-bg);
  border-color: var(--color-danger-border);
}

/* ========== Docs layout ========== */

.docs-layout {
  display: flex;
  align-items: flex-start;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
  flex: 1 0 auto;
}

/* Override the default .content centering for docs pages */
main.content:has(.docs-layout) {
  max-width: none;
  padding: 0;
}

/* ---- Sidebar ---- */

.docs-sidebar {
  flex: 0 0 240px;
  width: 240px;
  min-height: calc(100vh - 52px);
  border-right: 1px solid var(--border-subtle);
  padding: 20px 0 40px;
  position: sticky;
  top: 52px; /* topbar height */
  max-height: calc(100vh - 52px);
  overflow-y: auto;
  background: var(--bg-base);
}

.docs-sidebar__search {
  padding: 0 16px 12px;
}

.docs-sidebar__nav {
  padding: 0 8px;
}

.sidebar-section {
  margin-bottom: 20px;
}

.sidebar-section__title {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 8px 6px;
  text-decoration: none;
}

.sidebar-section__title:hover {
  color: var(--text-secondary);
}

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

.sidebar-pages--nested {
  padding-left: 12px;
}

.sidebar-page {
  display: block;
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.4;
}

.sidebar-page:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.sidebar-page.is-active {
  color: var(--accent);
  background: var(--bg-raised);
  font-weight: 500;
}

.sidebar-nested-title {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.sidebar-nested-title:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.sidebar-nested-title a {
  color: inherit;
  text-decoration: none;
}

details:has([data-active]) > .sidebar-nested-title {
  color: var(--accent);
}

details > summary { list-style: none; }
details > summary::-webkit-details-marker { display: none; }

/* ---- Content area ---- */

.docs-content {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 880px;
  padding: 32px 40px 64px;
}

/* ---- Breadcrumbs ---- */

.docs-breadcrumbs {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
}

.docs-breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
}

.docs-breadcrumbs a:hover {
  color: var(--accent);
}

/* ---- Alpha banner ---- */

.docs-alpha-banner {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-radius: 3px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ---- Article ---- */

.docs-article h1 {
  margin-top: 0;
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
}

.docs-article h2 { font-size: 18px; font-weight: 600; margin-top: 32px; }
.docs-article h3 { font-size: 15px; font-weight: 600; margin-top: 24px; }

.docs-article p, .docs-article li {
  color: var(--text-secondary);
  line-height: 1.7;
}

.docs-article a { color: var(--accent); }
.docs-article a:hover { color: var(--accent-bright); }

.docs-article table {
  border-collapse: collapse;
  width: 100%;
  margin: 16px 0;
  font-size: 13px;
}

.docs-article th,
.docs-article td {
  text-align: left;
  padding: 8px 12px;
  border: 1px solid var(--border-default);
}

.docs-article th {
  background: var(--bg-raised);
  font-weight: 600;
  color: var(--text-primary);
}

.docs-article code {
  font-family: 'SF Mono', 'Roboto Mono', monospace;
  font-size: 12px;
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 2px;
  padding: 1px 4px;
}

/* ---- Section index page ---- */

.docs-section-index {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.docs-section-index li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
}

.docs-section-index li:last-child { border-bottom: none; }

/* ---- Prev/Next navigation ---- */

.docs-prevnext {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  gap: 16px;
}

.docs-prevnext__prev,
.docs-prevnext__next {
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
}

.docs-prevnext__next { margin-left: auto; }

.docs-prevnext__prev:hover,
.docs-prevnext__next:hover { color: var(--accent-bright); }

/* ---- Edit link ---- */

.docs-edit-link {
  margin-top: 24px;
  font-size: 12px;
}

.docs-edit-link a {
  color: var(--text-muted);
  text-decoration: none;
}

.docs-edit-link a:hover { color: var(--text-secondary); }

/* ---- Hamburger (mobile only) ---- */

.docs-hamburger {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 200;
  background: var(--accent);
  color: var(--text-inverted);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.docs-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
}

@media (max-width: 768px) {
  .docs-layout {
    display: block;
  }

  .docs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 150;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    max-height: 100vh;
    width: 280px;
    flex: none;
    border-right: 1px solid var(--border-default);
    background: var(--bg-surface);
  }

  .docs-sidebar[data-open] {
    transform: translateX(0);
  }

  .docs-overlay[data-open] {
    display: block;
  }

  .docs-hamburger {
    display: flex;
  }

  .docs-content {
    padding: 20px 16px 64px;
  }
}

/* ---- Topbar active link ---- */

.topbar__link--active {
  color: var(--accent);
}