/* ============================================================
   MultiTerminal Documentation — Shared Stylesheet
   ============================================================ */

/* --- CSS Custom Properties (Dark theme default) --- */
:root,
html[data-theme="dark"] {
  --bg-primary: #1a1b2e;
  --bg-secondary: #252640;
  --bg-sidebar: #151625;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --accent: #6c63ff;
  --accent-hover: #7c73ff;
  --border: #2a2b45;
  --code-bg: #1e1f35;
  --success: #4caf50;
  --warning: #ff9800;
  --error: #f44336;
  --info: #2196f3;
}

html[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-sidebar: #e8e8ed;
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --accent: #6c63ff;
  --accent-hover: #7c73ff;
  --border: #d0d0d5;
  --code-bg: #f0f0f5;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

img {
  max-width: 100%;
  height: auto;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  line-height: 1.3;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1em; }

ul, ol {
  margin-bottom: 1em;
  padding-left: 1.5em;
}
li { margin-bottom: 0.35em; }

/* --- Page Layout --- */
.page-wrapper {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 1.25rem 0;
  z-index: 100;
  transition: transform 0.25s ease;
}

.sidebar-header {
  padding: 0 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.75rem;
}

.sidebar-header .logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-header .logo-icon {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 0.85rem;
}

.sidebar-header .tagline {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Sidebar navigation */
.sidebar nav {
  padding: 0 0.75rem;
}

.nav-section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  padding: 0.75rem 0.5rem 0.35rem;
}

.nav-link {
  display: block;
  padding: 0.4rem 0.5rem 0.4rem 1.1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-radius: 4px;
  transition: background 0.15s, color 0.15s;
}
.nav-link:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
  text-decoration: none;
}
.nav-link.active {
  background: var(--accent);
  color: #fff;
}
.nav-link.active:hover {
  background: var(--accent-hover);
  color: #fff;
}

/* --- Hamburger (mobile) --- */
.hamburger {
  display: none;
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  padding: 0.45rem 0.6rem;
  font-size: 1.25rem;
  cursor: pointer;
  line-height: 1;
}

/* --- Main Content --- */
.main-content {
  margin-left: 260px;
  flex: 1;
  padding: 2.5rem 2rem;
}

.content-container {
  max-width: 900px;
  margin: 0 auto;
}

/* --- Theme Toggle --- */
.theme-toggle {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 150;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: background 0.15s;
}
.theme-toggle:hover {
  background: var(--accent);
  color: #fff;
}

/* --- Code Blocks --- */
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.25em;
  font-size: 0.875rem;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  border: none;
  font-size: inherit;
}

code {
  font-family: "Cascadia Code", "Fira Code", Consolas, "Courier New", monospace;
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}

/* --- Tables --- */
.table-wrapper {
  overflow-x: auto;
  margin-bottom: 1.25em;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead th {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-align: left;
  padding: 0.65rem 0.85rem;
}

tbody td {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
}

tbody tr:nth-child(even) {
  background: var(--bg-secondary);
}

tbody tr:hover {
  background: var(--border);
}

/* --- Callout Boxes --- */
.note, .warning, .tip, .danger {
  padding: 0.85rem 1rem;
  margin-bottom: 1.25em;
  border-radius: 4px;
  border-left: 4px solid;
  background: var(--bg-secondary);
}

.note   { border-left-color: var(--info); }
.warning { border-left-color: var(--warning); }
.tip    { border-left-color: var(--success); }
.danger { border-left-color: var(--error); }

.note::before,
.warning::before,
.tip::before,
.danger::before {
  display: block;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  margin-bottom: 0.3em;
}
.note::before    { content: "Note";    color: var(--info); }
.warning::before { content: "Warning"; color: var(--warning); }
.tip::before     { content: "Tip";     color: var(--success); }
.danger::before  { content: "Danger";  color: var(--error); }

/* --- Badges --- */
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15em 0.55em;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.badge-success { background: var(--success); color: #fff; }
.badge-warning { background: var(--warning); color: #fff; }
.badge-error   { background: var(--error);   color: #fff; }
.badge-info    { background: var(--info);    color: #fff; }

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5em;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card h3 {
  margin-top: 0;
  font-size: 1.1rem;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.card a {
  display: block;
  text-decoration: none;
  color: inherit;
}
.card a:hover {
  text-decoration: none;
}

/* --- Endpoint Block (API docs) --- */
.endpoint-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25em;
}

.endpoint-block .method {
  display: inline-block;
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.15em 0.5em;
  border-radius: 3px;
  margin-right: 0.5rem;
  text-transform: uppercase;
}
.method-get    { background: var(--success); color: #fff; }
.method-post   { background: var(--info);    color: #fff; }
.method-put    { background: var(--warning); color: #fff; }
.method-delete { background: var(--error);   color: #fff; }
.method-patch  { background: #9c27b0;       color: #fff; }

.endpoint-block .path {
  font-family: "Cascadia Code", "Fira Code", Consolas, monospace;
  font-size: 0.95rem;
}

.endpoint-block .description {
  margin-top: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* --- Hero Section (index page) --- */
.hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: 2.5rem;
  margin-top: 0;
  margin-bottom: 0.25em;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.hero .version {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- Quick Links --- */
.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5em;
}

.quick-links a {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  transition: border-color 0.15s;
}
.quick-links a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

/* --- Footer --- */
.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
}

/* --- Responsive (below 768px) --- */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding: 3.5rem 1rem 2rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

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

/* --- Sidebar overlay on mobile --- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 90;
}
.sidebar-overlay.visible {
  display: block;
}

/* --- Print --- */
@media print {
  .sidebar,
  .hamburger,
  .theme-toggle,
  .sidebar-overlay {
    display: none !important;
  }
  .main-content {
    margin-left: 0;
  }
  body {
    background: #fff;
    color: #000;
  }
  a { color: #000; text-decoration: underline; }
  pre { border: 1px solid #ccc; }
}

/* ============================================================
   Docs search (sidebar instant search) — added with search.js
   ============================================================ */
.doc-search {
  position: relative;
  padding: 0 1rem 0.75rem;
}
.doc-search-input {
  width: 100%;
  padding: 0.5rem 0.6rem;
  font-size: 0.85rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  outline: none;
}
.doc-search-input:focus { border-color: var(--accent); }
.doc-search-input::placeholder { color: var(--text-secondary); }
.doc-search-results {
  position: absolute;
  left: 1rem;
  right: 1rem;
  top: calc(100% - 0.25rem);
  z-index: 50;
  max-height: 60vh;
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.doc-search-result {
  display: block;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  text-decoration: none;
}
.doc-search-result:last-child { border-bottom: none; }
.doc-search-result:hover,
.doc-search-result.active { background: var(--accent); color: #fff; text-decoration: none; }
.dsr-title { display: block; font-size: 0.85rem; font-weight: 600; }
.dsr-snippet {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 2px;
}
.doc-search-result:hover .dsr-snippet,
.doc-search-result.active .dsr-snippet { color: #f0f0f0; }
.doc-search-result mark { background: rgba(108, 99, 255, 0.35); color: inherit; border-radius: 2px; padding: 0 1px; }
.doc-search-result:hover mark,
.doc-search-result.active mark { background: rgba(255, 255, 255, 0.3); color: #fff; }
.doc-search-empty { padding: 0.6rem 0.7rem; font-size: 0.8rem; color: var(--text-secondary); }

/* ============================================================
   Architecture page — layered diagram, flow diagrams, TOC
   ============================================================ */

/* Layered system diagram (replaces the old ASCII <pre>) */
.arch-stack { display: flex; flex-direction: column; align-items: stretch; gap: 0; margin: 1.75rem 0; }
.arch-layer {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1.05rem;
}
.arch-layer-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 0.75rem; flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem; margin-bottom: 0.65rem;
}
.arch-layer-title { font-weight: 700; color: var(--accent); font-size: 1.05rem; }
.arch-layer-sub { font-size: 0.8rem; color: var(--text-secondary); font-family: ui-monospace, Consolas, "Courier New", monospace; }
.arch-nodes { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.arch-node {
  font-size: 0.78rem;
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  color: var(--text-primary);
  white-space: nowrap;
}
.arch-note { margin-top: 0.6rem; font-size: 0.82rem; color: var(--text-secondary); }
.arch-hub { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.arch-hub .arch-layer-title::after {
  content: " — central hub"; color: var(--text-secondary); font-weight: 400; font-size: 0.8rem;
}
.arch-conn { display: flex; justify-content: center; align-items: center; height: 2.3rem; position: relative; }
.arch-conn::before { content: ""; position: absolute; top: 0; bottom: 0; width: 2px; background: var(--border); }
.arch-conn span {
  position: relative; z-index: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.72rem; letter-spacing: 0.02em;
  padding: 0.18rem 0.65rem; border-radius: 999px;
}

/* Step-by-step flow diagrams (data flow / pipelines) */
.flow-diagram { display: flex; flex-direction: column; align-items: stretch; gap: 0; margin: 1.25rem 0; }
.flow-step {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
}
.flow-label { font-weight: 600; color: var(--text-primary); font-size: 0.92rem; }
.flow-detail { font-size: 0.83rem; color: var(--text-secondary); margin-top: 0.2rem; }
.flow-arrow { text-align: center; color: var(--accent); font-size: 1.15rem; line-height: 1; padding: 0.3rem 0; }
/* A step that fans out into parallel branches (declared AFTER .flow-step to win) */
.flow-split { background: transparent; border: none; border-radius: 0; padding: 0; display: flex; gap: 0.6rem; flex-wrap: wrap; }
.flow-branch {
  flex: 1 1 180px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
}

/* On-this-page table of contents */
.toc {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1.1rem;
  margin: 1.25rem 0;
}
.toc h3 { margin-top: 0; margin-bottom: 0.4rem; }
.toc ul { margin: 0; padding-left: 1.15rem; }
.toc li { margin: 0.15rem 0; }

/* Database schema groups */
.schema-group { margin: 1.5rem 0; }
.schema-table { width: 100%; }

/* Architecture layer — intro description + two-column label/description rows */
.arch-desc { font-size: 0.86rem; color: var(--text-secondary); margin: 0 0 0.7rem; }
.arch-rows { display: flex; flex-direction: column; }
.arch-row {
  display: grid;
  grid-template-columns: minmax(130px, 190px) 1fr;
  gap: 0.85rem;
  padding: 0.4rem 0;
  border-top: 1px solid var(--border);
}
.arch-row:first-child { border-top: none; }
.arch-key {
  font-family: ui-monospace, Consolas, "Courier New", monospace;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
}
.arch-val { font-size: 0.84rem; color: var(--text-primary); }
@media (max-width: 640px) {
  .arch-row { grid-template-columns: 1fr; gap: 0.15rem; }
}