/* ============================================================
   Meridian Cloud Documentation — styles.css
   Dark theme: bg #0a0e1a, surface #111827, cards #1e293b
   Text #e2e8f0, muted #94a3b8, accent #6366f1
   ============================================================ */

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

:root {
  --bg:        #0a0e1a;
  --surface:   #111827;
  --card:      #1e293b;
  --border:    #2d3748;
  --text:      #e2e8f0;
  --muted:     #94a3b8;
  --accent:    #6366f1;
  --accent-hover: #818cf8;
  --info:      #3b82f6;
  --warning:   #f59e0b;
  --danger:    #ef4444;
  --tip:       #22c55e;
  --sidebar-w: 280px;
  --toc-w:     220px;
  --header-h:  56px;
  --font:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono:      'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

img { max-width: 100%; }

/* ---------- Layout ---------- */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow: hidden;
  transition: transform .25s ease;
}

.sidebar-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.sidebar-logo svg {
  flex-shrink: 0;
}

.sidebar-logo-text {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

.sidebar-logo-sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Search */
.search-box {
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 8px 12px 8px 34px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 13px;
  font-family: var(--font);
  outline: none;
  transition: border-color .15s;
}

.search-box input::placeholder { color: var(--muted); }
.search-box input:focus { border-color: var(--accent); }

.search-box .search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

/* Search results */
.search-results {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  max-height: 400px;
  overflow-y: auto;
  display: none;
  z-index: 200;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
}

.search-results.active { display: block; }

.search-result-item {
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background .1s;
}

.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: rgba(99,102,241,.1); }

.search-result-item .result-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.search-result-item .result-section {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

.search-result-item .result-snippet {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
  line-height: 1.4;
}

.search-result-item .result-snippet mark {
  background: rgba(99,102,241,.3);
  color: var(--text);
  border-radius: 2px;
  padding: 0 2px;
}

/* Nav */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.nav-section { margin-bottom: 4px; }

.nav-section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  transition: color .15s;
}

.nav-section-title:hover { color: var(--text); }

.nav-section-title .chevron {
  transition: transform .2s;
  font-size: 10px;
}

.nav-section.collapsed .nav-section-title .chevron {
  transform: rotate(-90deg);
}

.nav-section.collapsed .nav-items { display: none; }

.nav-items { padding-bottom: 4px; }

.nav-item {
  display: block;
  padding: 6px 20px 6px 28px;
  font-size: 13px;
  color: var(--muted);
  transition: all .15s;
  cursor: pointer;
  border-left: 2px solid transparent;
  text-decoration: none;
}

.nav-item:hover {
  color: var(--text);
  background: rgba(99,102,241,.05);
  text-decoration: none;
}

.nav-item.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(99,102,241,.08);
  font-weight: 500;
}

/* ---------- Main content ---------- */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.content-wrapper {
  display: flex;
  flex: 1;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.content {
  flex: 1;
  min-width: 0;
  padding: 32px 48px 80px;
  max-width: 900px;
}

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--accent); text-decoration: none; }
.breadcrumbs .sep { color: var(--border); }
.breadcrumbs .current { color: var(--text); }

/* ---------- On-this-page TOC ---------- */
.toc {
  width: var(--toc-w);
  flex-shrink: 0;
  padding: 32px 16px 32px 0;
  position: sticky;
  top: 0;
  max-height: 100vh;
  overflow-y: auto;
}

.toc-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 12px;
}

.toc-list { list-style: none; }

.toc-list li {
  margin-bottom: 4px;
}

.toc-list a {
  display: block;
  padding: 3px 0 3px 12px;
  font-size: 12px;
  color: var(--muted);
  border-left: 1px solid var(--border);
  transition: all .15s;
  text-decoration: none;
}

.toc-list a:hover {
  color: var(--text);
  border-left-color: var(--accent);
}

.toc-list a.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

/* ---------- Typography ---------- */
.content h1 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
  line-height: 1.2;
  color: #fff;
}

.content h2 {
  font-size: 22px;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  color: #fff;
  scroll-margin-top: 20px;
}

.content h3 {
  font-size: 17px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--text);
  scroll-margin-top: 20px;
}

.content h4 {
  font-size: 15px;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--text);
}

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

.content .subtitle {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 32px;
  line-height: 1.6;
}

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

.content li { margin-bottom: 6px; }
.content li::marker { color: var(--muted); }

.content strong { color: #fff; font-weight: 600; }

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

/* Anchor links on headings */
.content h2 .anchor, .content h3 .anchor {
  color: var(--border);
  margin-left: 6px;
  font-weight: 400;
  opacity: 0;
  transition: opacity .15s;
  text-decoration: none;
}

.content h2:hover .anchor, .content h3:hover .anchor {
  opacity: 1;
  color: var(--accent);
}

/* ---------- Tables ---------- */
.content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 14px;
}

.content table th {
  text-align: left;
  padding: 10px 14px;
  background: var(--card);
  color: #fff;
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 2px solid var(--border);
}

.content table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.content table tr:hover td {
  background: rgba(99,102,241,.03);
}

.content table code {
  font-size: 12px;
}

/* ---------- Code ---------- */
.content code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--card);
  padding: 2px 6px;
  border-radius: 4px;
  color: #c4b5fd;
}

.content pre {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  margin-bottom: 24px;
  line-height: 1.5;
}

.content pre code {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 13px;
}

/* ---------- Callouts ---------- */
.callout {
  padding: 16px 20px;
  border-radius: 8px;
  margin-bottom: 24px;
  border-left: 4px solid;
  font-size: 14px;
}

.callout-title {
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.callout.info {
  background: rgba(59,130,246,.08);
  border-color: var(--info);
}
.callout.info .callout-title { color: var(--info); }

.callout.warning {
  background: rgba(245,158,11,.08);
  border-color: var(--warning);
}
.callout.warning .callout-title { color: var(--warning); }

.callout.danger {
  background: rgba(239,68,68,.08);
  border-color: var(--danger);
}
.callout.danger .callout-title { color: var(--danger); }

.callout.tip {
  background: rgba(34,197,94,.08);
  border-color: var(--tip);
}
.callout.tip .callout-title { color: var(--tip); }

/* ---------- Screenshot placeholder ---------- */
.screenshot-placeholder {
  background: var(--card);
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 40px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 24px;
}

/* ---------- Badge ---------- */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-accent { background: rgba(99,102,241,.15); color: var(--accent); }
.badge-green  { background: rgba(34,197,94,.15); color: var(--tip); }
.badge-amber  { background: rgba(245,158,11,.15); color: var(--warning); }
.badge-red    { background: rgba(239,68,68,.15); color: var(--danger); }
.badge-blue   { background: rgba(59,130,246,.15); color: var(--info); }

/* ---------- Steps ---------- */
.steps {
  counter-reset: step;
  padding-left: 0;
  list-style: none;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 40px;
  margin-bottom: 20px;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Keyboard shortcut ---------- */
kbd {
  display: inline-block;
  padding: 2px 6px;
  font-family: var(--mono);
  font-size: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  box-shadow: 0 1px 0 var(--border);
}

/* ---------- Footer ---------- */
.footer {
  padding: 24px 48px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer a { color: var(--muted); }
.footer a:hover { color: var(--accent); }

/* ---------- Hamburger (mobile) ---------- */
.hamburger {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text);
}

.hamburger svg { display: block; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 99;
}

/* ---------- Section pages ---------- */
.page { display: none; }
.page.active { display: block; }

/* ---------- Grid cards (for module overview etc.) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  transition: border-color .15s;
  cursor: pointer;
}

.card:hover { border-color: var(--accent); }

.card-icon {
  width: 40px;
  height: 40px;
  background: rgba(99,102,241,.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--accent);
}

.card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  margin-top: 0;
  color: #fff;
}

.card p {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 0;
  line-height: 1.5;
}

/* ---------- Report Issue link ---------- */
.report-issue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.report-issue:hover { color: var(--accent); text-decoration: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
  .toc { display: none; }
}

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.active { display: block; }
  .hamburger { display: block; }

  .main { margin-left: 0; }
  .content { padding: 24px 16px 64px; }
  .footer { padding: 16px; }

  .content h1 { font-size: 24px; }
  .content h2 { font-size: 18px; margin-top: 32px; }

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

/* ---------- Print ---------- */
@media print {
  .sidebar, .toc, .hamburger, .search-box, .sidebar-overlay, .report-issue { display: none !important; }
  .main { margin-left: 0; }
  .content { max-width: 100%; padding: 0; }
  body { background: #fff; color: #000; font-size: 12pt; }
  a { color: #000; text-decoration: underline; }
  .content h1, .content h2, .content h3, .content strong { color: #000; }
  .content table th { background: #eee; }
  .content table td, .content table th { border: 1px solid #ccc; }
  .callout { border-color: #999; background: #f9f9f9; }
  .content pre { background: #f4f4f4; border: 1px solid #ccc; }
  .content code { background: #f4f4f4; color: #333; }
}