/* ========================================
   DOCS VIEWER — docs-viewer.css
   ======================================== */

/* ---- Layout ---- */
.docs-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.docs-layout {
  display: flex;
  flex: 1;
  margin-top: 64px; /* navbar height */
  min-height: calc(100vh - 64px - 80px);
}

/* ---- Sidebar ---- */
.docs-sidebar {
  width: 280px;
  flex-shrink: 0;
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 64px);
  position: sticky;
  top: 64px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: sticky;
  top: 0;
  background: var(--bg-2);
  z-index: 10;
}

.sidebar-search-wrap {
  position: relative;
}

.sidebar-search {
  width: 100%;
  padding: 8px 36px 8px 12px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.82rem;
  outline: none;
  transition: var(--transition);
  box-sizing: border-box;
}

.sidebar-search:focus {
  border-color: var(--primary-2);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.search-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.75rem;
  opacity: 0.5;
  pointer-events: none;
}

.sidebar-lang {
  display: flex;
  gap: 4px;
}

.slang-btn {
  flex: 1;
  padding: 5px;
  border-radius: 6px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
}

.slang-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
}

/* ---- Sidebar Nav ---- */
.sidebar-nav {
  padding: 8px 0 24px;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 2px;
}

.nav-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  cursor: pointer;
  user-select: none;
  border-radius: 0;
  transition: background var(--transition);
}

.nav-section-header:hover {
  background: var(--bg-3);
}

.nav-section-title {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-2);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-section-icon {
  font-size: 1rem;
}

.nav-section-chevron {
  font-size: 0.65rem;
  color: var(--text-3);
  transition: transform 0.2s ease;
}

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

.nav-section-items {
  display: none;
  flex-direction: column;
}

.nav-section.open .nav-section-items {
  display: flex;
}

.nav-item {
  display: block;
  padding: 7px 16px 7px 40px;
  font-size: 0.82rem;
  color: var(--text-2);
  text-decoration: none;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
  position: relative;
}

.nav-item::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border);
  transition: var(--transition);
}

.nav-item:hover {
  background: var(--bg-3);
  color: var(--text);
}

.nav-item:hover::before {
  background: var(--primary-2);
}

.nav-item.active {
  color: var(--primary-2);
  background: rgba(99,102,241,0.08);
  font-weight: 600;
}

.nav-item.active::before {
  background: var(--primary-2);
  width: 6px;
  height: 6px;
}

/* ---- Main Content Area ---- */
.docs-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-mobile-toggle {
  display: none;
  padding: 10px 20px;
  background: var(--bg-2);
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.85rem;
  cursor: pointer;
  text-align: left;
  width: 100%;
}

.docs-content {
  padding: 40px 48px 80px;
  max-width: 860px;
}

/* ---- Welcome screen ---- */
.docs-welcome {
  text-align: center;
  padding: 48px 0;
}

.docs-welcome .welcome-icon {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.docs-welcome h1 {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.docs-welcome p {
  color: var(--text-2);
  margin-bottom: 32px;
}

.welcome-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 560px;
  margin: 0 auto;
}

.welcome-card {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: left;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-body);
}

.welcome-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.wc-icon { font-size: 1.5rem; margin-bottom: 4px; }
.welcome-card strong { color: var(--text); font-size: 0.9rem; }
.welcome-card span { color: var(--text-2); font-size: 0.78rem; }

/* ---- Markdown Body ---- */
.markdown-body {
  color: var(--text-2);
  font-size: 0.93rem;
  line-height: 1.8;
}

.markdown-body h1 {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
  line-height: 1.2;
}

.markdown-body h2 {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.markdown-body h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 8px;
}

.markdown-body h4 {
  font-family: var(--font-head);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary-2);
  margin: 16px 0 6px;
}

.markdown-body p {
  margin: 0 0 14px;
  color: var(--text-2);
}

.markdown-body ul,
.markdown-body ol {
  margin: 0 0 14px;
  padding-left: 20px;
}

.markdown-body li {
  margin-bottom: 6px;
  color: var(--text-2);
}

.markdown-body a {
  color: var(--primary-2);
  text-decoration: none;
  border-bottom: 1px dashed rgba(99,102,241,0.3);
  transition: var(--transition);
}

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

.markdown-body strong {
  color: var(--text);
  font-weight: 600;
}

.markdown-body em {
  color: var(--text-2);
  font-style: italic;
}

.markdown-body blockquote {
  margin: 16px 0;
  padding: 12px 16px;
  border-left: 3px solid var(--primary-2);
  background: rgba(99,102,241,0.06);
  border-radius: 0 8px 8px 0;
  color: var(--text-2);
  font-size: 0.88rem;
}

.markdown-body blockquote p { margin: 0; }

.markdown-body code {
  background: var(--bg-3);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  border: 1px solid var(--border);
}

.markdown-body pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 16px 0;
  position: relative;
}

.markdown-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: #e6edf3;
  font-size: 0.82rem;
  line-height: 1.6;
}

.markdown-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 28px 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.85rem;
}

.markdown-body th {
  background: var(--bg-3);
  color: var(--text);
  font-family: var(--font-head);
  font-weight: 600;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--border);
}

.markdown-body td {
  padding: 8px 14px;
  border: 1px solid var(--border);
  color: var(--text-2);
}

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

/* Breadcrumb */
.doc-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-3);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.doc-breadcrumb a {
  color: var(--text-2);
  text-decoration: none;
}

.doc-breadcrumb a:hover { color: var(--primary-2); }
.doc-breadcrumb span { color: var(--text-3); }

/* Doc nav bottom */
.doc-nav-bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.doc-nav-btn {
  display: flex;
  flex-direction: column;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  min-width: 160px;
  max-width: 48%;
  font-family: var(--font-body);
}

.doc-nav-btn:hover {
  border-color: var(--border-glow);
  background: rgba(99,102,241,0.05);
}

.doc-nav-btn.prev { text-align: left; }
.doc-nav-btn.next { text-align: right; margin-left: auto; }

.doc-nav-dir {
  font-size: 0.72rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.doc-nav-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-head);
}

/* Loading / Error states */
.docs-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 80px 0;
  color: var(--text-2);
}

.docs-loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary-2);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- No results ---- */
.nav-no-results {
  padding: 12px 16px;
  font-size: 0.8rem;
  color: var(--text-3);
  text-align: center;
}

/* ---- Footer override ---- */
.docs-footer {
  margin-top: 0;
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 900px) {
  .docs-sidebar {
    position: fixed;
    top: 64px;
    left: -280px;
    height: calc(100vh - 64px);
    z-index: 100;
    transition: left 0.3s ease;
    box-shadow: none;
  }

  .docs-sidebar.open {
    left: 0;
    box-shadow: 4px 0 24px rgba(0,0,0,0.4);
  }

  .sidebar-mobile-toggle {
    display: block;
  }

  .docs-content {
    padding: 24px 20px 60px;
  }

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

  .doc-nav-bottom {
    flex-direction: column;
  }

  .doc-nav-btn { max-width: 100%; }
}