/* ═══════════════════════════════════════════════════════════
   Floww Docs — Shared Layout CSS
   Inspired by Claude Code docs dark mode, Floww-branded
   ═══════════════════════════════════════════════════════════ */

/* ─── Design Tokens ─────────────────────────────────────── */
:root {
  --doc-bg:           #0f0f0f;
  --doc-bg-sidebar:   #141414;
  --doc-bg-card:      #1a1a1a;
  --doc-bg-code:      #1e1e1e;
  --doc-bg-active:    #0b0c0e;
  --doc-text:         #dedede;
  --doc-text-body:    #9e9e9e;
  --doc-text-muted:   #636363;
  --doc-accent:       #d97757;
  --doc-accent-hover: #e8956f;
  --doc-border:       rgba(255,255,255,0.08);
  --doc-link:         #d97757;
  --doc-radius:       8px;
  --doc-sidebar-w:    260px;
  --doc-toc-w:        200px;
  --doc-topbar-h:     56px;
  --doc-content-max:  720px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--doc-topbar-h) + 24px);
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--doc-text-body);
  background: var(--doc-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--doc-link); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--doc-accent-hover); }

img { max-width: 100%; display: block; }

::selection { background: rgba(217,119,87,0.3); color: #fff; }

/* ─── Top Bar ───────────────────────────────────────────── */
.doc-topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--doc-topbar-h);
  background: rgba(15,15,15,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--doc-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
}

.doc-topbar-logo {
  font-family: 'Source Serif 4', Georgia, serif;
  font-style: italic;
  font-weight: 600;
  font-size: 20px;
  color: var(--doc-text);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}
.doc-topbar-logo:hover { color: var(--doc-text); }

.doc-topbar-logo .logo-suffix {
  font-family: system-ui, -apple-system, sans-serif;
  font-style: normal;
  font-weight: 400;
  font-size: 14px;
  color: var(--doc-text-muted);
  margin-left: 4px;
}

.doc-topbar-search {
  flex: 1;
  max-width: 400px;
  margin-left: auto;
}

.doc-search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 12px;
  background: var(--doc-bg-card);
  border: 1px solid var(--doc-border);
  border-radius: var(--doc-radius);
  color: var(--doc-text-muted);
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.doc-search-trigger:hover { border-color: rgba(255,255,255,0.15); }

.doc-search-trigger svg { flex-shrink: 0; opacity: 0.5; }

.doc-search-trigger .search-label { flex: 1; text-align: left; }

.doc-search-trigger kbd {
  font-family: system-ui, sans-serif;
  font-size: 11px;
  padding: 2px 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--doc-border);
  border-radius: 4px;
  color: var(--doc-text-muted);
}

.doc-topbar-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
  margin-left: 16px;
}

.doc-topbar-links a {
  font-size: 14px;
  color: var(--doc-text-muted);
  white-space: nowrap;
}
.doc-topbar-links a:hover { color: var(--doc-text); }

/* Hamburger (mobile) */
.doc-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--doc-text);
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

/* ─── Layout Shell ──────────────────────────────────────── */
.doc-layout {
  display: flex;
  margin-top: var(--doc-topbar-h);
  min-height: calc(100vh - var(--doc-topbar-h));
}

/* ─── Sidebar ───────────────────────────────────────────── */
.doc-sidebar {
  position: fixed;
  top: var(--doc-topbar-h);
  left: 0;
  bottom: 0;
  width: var(--doc-sidebar-w);
  background: var(--doc-bg-sidebar);
  border-right: 1px solid var(--doc-border);
  overflow-y: auto;
  padding: 16px 0;
  z-index: 50;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.doc-sidebar::-webkit-scrollbar { width: 4px; }
.doc-sidebar::-webkit-scrollbar-track { background: transparent; }
.doc-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 2px; }

.doc-sidebar-section { margin-bottom: 8px; }

.doc-sidebar-heading {
  display: block;
  padding: 8px 20px 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--doc-text-muted);
  user-select: none;
}

.doc-sidebar-link {
  display: block;
  padding: 6px 20px 6px 20px;
  font-size: 14px;
  color: var(--doc-text-body);
  border-left: 2px solid transparent;
  transition: all 0.12s;
  line-height: 1.4;
}
.doc-sidebar-link:hover {
  color: var(--doc-text);
  background: rgba(255,255,255,0.03);
}
.doc-sidebar-link.active {
  color: #fff;
  background: var(--doc-bg-active);
  border-left-color: var(--doc-accent);
}

/* ─── Main Content ──────────────────────────────────────── */
.doc-main {
  flex: 1;
  margin-left: var(--doc-sidebar-w);
  margin-right: var(--doc-toc-w);
  padding: 40px 48px 80px;
  min-width: 0;
}

.doc-content {
  max-width: var(--doc-content-max);
  margin: 0 auto;
}

/* ─── Right-side TOC ────────────────────────────────────── */
.doc-toc {
  position: fixed;
  top: var(--doc-topbar-h);
  right: 0;
  bottom: 0;
  width: var(--doc-toc-w);
  padding: 32px 16px 32px 0;
  overflow-y: auto;
  scrollbar-width: none;
}
.doc-toc::-webkit-scrollbar { display: none; }

.doc-toc-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--doc-text-muted);
  padding: 0 0 8px 16px;
}

.doc-toc-list {
  list-style: none;
  border-left: 1px solid var(--doc-border);
}

.doc-toc-link {
  display: block;
  padding: 4px 12px 4px 16px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--doc-text-muted);
  border-left: 1px solid transparent;
  margin-left: -1px;
  transition: all 0.12s;
}
.doc-toc-link:hover { color: var(--doc-text-body); }
.doc-toc-link.active {
  color: var(--doc-accent);
  border-left-color: var(--doc-accent);
}

/* Nested TOC items (h3) */
.doc-toc-link[data-level="3"] {
  padding-left: 28px;
  font-size: 12px;
}

/* ─── Typography ────────────────────────────────────────── */
.doc-content h1 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 30px;
  line-height: 1.25;
  color: var(--doc-text);
  margin-bottom: 8px;
}

.doc-content .doc-subtitle {
  font-size: 16px;
  color: var(--doc-text-muted);
  margin-bottom: 32px;
}

.doc-content h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  font-size: 24px;
  line-height: 1.3;
  color: var(--doc-text);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--doc-border);
}

.doc-content h2:first-of-type { border-top: none; padding-top: 0; margin-top: 32px; }

.doc-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--doc-text);
  margin-top: 32px;
  margin-bottom: 12px;
}

.doc-content p {
  margin-bottom: 16px;
}

.doc-content ul, .doc-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.doc-content li {
  margin-bottom: 6px;
}

.doc-content li::marker { color: var(--doc-text-muted); }

.doc-content strong { color: var(--doc-text); font-weight: 600; }

/* ─── Inline Code ───────────────────────────────────────── */
.doc-content code {
  font-family: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.875em;
  background: var(--doc-bg-code);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--doc-text);
}

/* ─── Code Blocks ───────────────────────────────────────── */
.doc-content pre {
  position: relative;
  background: var(--doc-bg-code);
  border: 1px solid var(--doc-border);
  border-radius: var(--doc-radius);
  padding: 16px 20px;
  margin-bottom: 20px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
}

.doc-content pre code {
  background: none;
  padding: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--doc-text-body);
}

.code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--doc-border);
  border-radius: 4px;
  color: var(--doc-text-muted);
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, background 0.15s;
}
.doc-content pre:hover .code-copy-btn { opacity: 1; }
.code-copy-btn:hover { background: rgba(255,255,255,0.1); color: var(--doc-text); }

/* Code block language label */
.code-lang {
  position: absolute;
  top: 8px;
  left: 16px;
  font-size: 11px;
  font-family: system-ui, sans-serif;
  color: var(--doc-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  pointer-events: none;
}

/* ─── Callout Boxes ─────────────────────────────────────── */
.doc-callout {
  padding: 16px 20px;
  margin-bottom: 20px;
  border-radius: var(--doc-radius);
  border-left: 3px solid;
  font-size: 14px;
  line-height: 1.6;
}

.doc-callout-title {
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.doc-callout.info {
  background: rgba(96,165,250,0.08);
  border-color: #60a5fa;
}
.doc-callout.info .doc-callout-title { color: #60a5fa; }

.doc-callout.tip {
  background: rgba(52,211,153,0.08);
  border-color: #34d399;
}
.doc-callout.tip .doc-callout-title { color: #34d399; }

.doc-callout.warning {
  background: rgba(251,191,36,0.08);
  border-color: #fbbf24;
}
.doc-callout.warning .doc-callout-title { color: #fbbf24; }

/* ─── Tables ────────────────────────────────────────────── */
.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
  font-size: 14px;
}

.doc-content th {
  text-align: left;
  font-weight: 600;
  color: var(--doc-text);
  padding: 10px 12px;
  border-bottom: 2px solid var(--doc-border);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.doc-content td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--doc-border);
  vertical-align: top;
}

.doc-content tr:nth-child(even) td { background: rgba(255,255,255,0.02); }

.doc-content td code {
  font-size: 13px;
}

/* ─── Landing Page Card Grid ────────────────────────────── */
.doc-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.doc-card {
  display: block;
  background: var(--doc-bg-card);
  border: 1px solid var(--doc-border);
  border-radius: var(--doc-radius);
  padding: 24px;
  transition: border-color 0.15s, background 0.15s;
}
.doc-card:hover {
  border-color: rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.03);
}

.doc-card-icon {
  font-size: 24px;
  margin-bottom: 12px;
  display: block;
}

.doc-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--doc-text);
  margin-bottom: 6px;
}

.doc-card-desc {
  font-size: 14px;
  color: var(--doc-text-muted);
  line-height: 1.5;
}

/* ─── Breadcrumb ────────────────────────────────────────── */
.doc-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--doc-text-muted);
  margin-bottom: 16px;
}
.doc-breadcrumb a { color: var(--doc-text-muted); }
.doc-breadcrumb a:hover { color: var(--doc-text); }
.doc-breadcrumb .sep { opacity: 0.4; }

/* ─── Anchor Links ──────────────────────────────────────── */
.doc-content h2[id],
.doc-content h3[id] {
  position: relative;
  cursor: pointer;
}
.doc-content h2[id]:hover::after,
.doc-content h3[id]:hover::after {
  content: '#';
  position: absolute;
  margin-left: 8px;
  color: var(--doc-text-muted);
  font-style: normal;
  font-weight: 400;
}

/* ─── Search Modal ──────────────────────────────────────── */
.doc-search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
}
.doc-search-overlay.open { display: flex; }

.doc-search-modal {
  width: 90%;
  max-width: 560px;
  background: var(--doc-bg-sidebar);
  border: 1px solid var(--doc-border);
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.5);
  overflow: hidden;
}

.doc-search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--doc-border);
}
.doc-search-input-wrap svg { flex-shrink: 0; color: var(--doc-text-muted); }

.doc-search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--doc-text);
  font-size: 16px;
  font-family: inherit;
}
.doc-search-input::placeholder { color: var(--doc-text-muted); }

.doc-search-results {
  max-height: 50vh;
  overflow-y: auto;
  padding: 8px;
}

.doc-search-result {
  display: block;
  padding: 10px 16px;
  border-radius: 6px;
  color: var(--doc-text-body);
  font-size: 14px;
  transition: background 0.1s;
}
.doc-search-result:hover,
.doc-search-result.focused {
  background: rgba(255,255,255,0.05);
  color: var(--doc-text);
}

.doc-search-result-title { font-weight: 600; color: var(--doc-text); }
.doc-search-result-section { font-size: 12px; color: var(--doc-text-muted); margin-top: 2px; }

.doc-search-empty {
  padding: 24px 16px;
  text-align: center;
  color: var(--doc-text-muted);
  font-size: 14px;
}

.doc-search-footer {
  padding: 10px 20px;
  border-top: 1px solid var(--doc-border);
  font-size: 12px;
  color: var(--doc-text-muted);
  display: flex;
  gap: 16px;
}
.doc-search-footer kbd {
  font-family: system-ui, sans-serif;
  font-size: 11px;
  padding: 1px 5px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--doc-border);
  border-radius: 3px;
}

/* ─── Mobile TOC Dropdown ───────────────────────────────── */
.doc-toc-mobile {
  display: none;
  margin-bottom: 24px;
}

.doc-toc-mobile-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 10px 16px;
  background: var(--doc-bg-card);
  border: 1px solid var(--doc-border);
  border-radius: var(--doc-radius);
  color: var(--doc-text-body);
  font-size: 14px;
  cursor: pointer;
}
.doc-toc-mobile-toggle svg {
  margin-left: auto;
  transition: transform 0.2s;
}
.doc-toc-mobile-toggle.open svg { transform: rotate(180deg); }

.doc-toc-mobile-list {
  list-style: none;
  padding: 8px 0;
  display: none;
  background: var(--doc-bg-card);
  border: 1px solid var(--doc-border);
  border-top: none;
  border-radius: 0 0 var(--doc-radius) var(--doc-radius);
}
.doc-toc-mobile-list.open { display: block; }

.doc-toc-mobile-list a {
  display: block;
  padding: 6px 16px;
  font-size: 14px;
  color: var(--doc-text-muted);
}
.doc-toc-mobile-list a:hover { color: var(--doc-text); }
.doc-toc-mobile-list a.active { color: var(--doc-accent); }

/* ─── Section Label (above page title) ──────────────────── */
.doc-section-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--doc-accent);
  margin-bottom: 8px;
}

/* ─── Sidebar mobile overlay ────────────────────────────── */
.doc-sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(0,0,0,0.5);
}

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

/* Hide TOC at medium widths */
@media (max-width: 1100px) {
  .doc-toc { display: none; }
  .doc-main { margin-right: 0; }
  .doc-toc-mobile { display: block; }
}

/* Collapse sidebar at mobile */
@media (max-width: 768px) {
  .doc-menu-btn { display: block; }
  .doc-topbar-search { display: none; }
  .doc-topbar-links { display: none; }

  .doc-sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
    z-index: 50;
    width: 280px;
  }
  .doc-sidebar.open {
    transform: translateX(0);
  }
  .doc-sidebar-overlay.open {
    display: block;
  }

  .doc-main {
    margin-left: 0;
    padding: 24px 20px 60px;
  }

  .doc-content h1 { font-size: 24px; }
  .doc-content h2 { font-size: 20px; }

  .doc-card-grid {
    grid-template-columns: 1fr;
  }
}

/* ─── Print ─────────────────────────────────────────────── */
@media print {
  .doc-topbar, .doc-sidebar, .doc-toc, .code-copy-btn,
  .doc-search-overlay, .doc-toc-mobile { display: none !important; }
  .doc-main { margin: 0; padding: 0; }
  body { background: #fff; color: #222; }
  .doc-content h1, .doc-content h2, .doc-content h3 { color: #111; }
}