/* Compiled from scss/site.scss — do not edit directly. */
:root {
  /* Brand Colors */
  --color-brand-green: #338165;
  --color-brand-green-hover: #2a6b53;
  --color-brand-green-active: #236049;
  --color-brand-green-rgb: 51, 129, 101;
  --color-brand-soft-white: #F8F9FA;
  --color-brand-metropolitan: #3D4043;
  --color-brand-mid-grey: #858482;
  --color-brand-darkest-tan: #E0D8CC;
  --color-brand-lighter-tan: #EBE6DF;
  --color-brand-lightest-tan: #EDEBE9;
  --color-brand-light-green: #96CDB9;
  /* Semantic Colors */
  --color-white: #FFFFFF;
  --color-gray-200: var(--color-brand-lightest-tan);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-background: var(--color-brand-soft-white);
  --color-surface: var(--color-white);
  --color-text: var(--color-brand-metropolitan);
  --color-text-secondary: var(--color-brand-mid-grey);
  --color-primary: var(--color-brand-green);
  --color-secondary: var(--color-brand-lightest-tan);
  --color-secondary-hover: var(--color-brand-lighter-tan);
  --color-border: var(--color-brand-darkest-tan);
  --color-btn-primary-text: #FFFFFF;
  --color-error: var(--color-red-500);
  /* Typography */
  --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  /* Spacing */
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  /* Borders & Shadows */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.04), 0 2px 4px -1px rgba(0,0,0,0.02);
  /* Animation */
  --duration-fast: 150ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
  --focus-ring: 0 0 0 3px rgba(var(--color-brand-green-rgb), 0.3);
  /* Layout */
  --sidebar-width: 240px;
  --topbar-height: 56px;
}

/* Dark mode: re-map the semantic custom properties (components inherit automatically). */
[data-theme="dark"] {
  --color-background: #1b1d1f;
  --color-surface: #25282b;
  --color-text: #e6e4e1;
  --color-text-secondary: #a3a19e;
  --color-secondary: #33373b;
  --color-secondary-hover: #3c4145;
  --color-border: #43474c;
  --color-brand-light-green: #2e5747;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -1px rgba(0,0,0,0.3);
}

[data-theme="dark"] .topbar-avatar,
[data-theme="dark"] .comment-input-avatar {
  color: var(--color-brand-light-green);
  background: var(--color-brand-green-active);
}

[data-theme="dark"] .badge-external {
  background: #1d3050;
  color: #7aa7e8;
}

[data-theme="dark"] .rte-content pre,
[data-theme="dark"] .article-detail-body pre {
  background: #131415;
}

/* ========== RESET ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Honor the `hidden` attribute even on elements with an author `display`
   (e.g. .btn { display: inline-flex }, .chat-usage { display: flex }). */
[hidden] { display: none !important; }

html { font-size: 16px; }
body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.5;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* ========== SCROLLBARS ========== */
:root {
  --scrollbar-thumb: rgba(var(--color-brand-green-rgb), 0.28);
  --scrollbar-thumb-hover: rgba(var(--color-brand-green-rgb), 0.5);
}
[data-theme="dark"] {
  --scrollbar-thumb: rgba(255, 255, 255, 0.18);
  --scrollbar-thumb-hover: rgba(255, 255, 255, 0.32);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

/* WebKit / Chromium / Edge — thin, track-less, rounded pill thumb that
   appears on hover-over-content and darkens on direct hover. */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 999px;
  /* transparent border creates padding so the thumb reads as a slim pill */
  border: 2px solid transparent;
  background-clip: padding-box;
}
*::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); background-clip: padding-box; }
*::-webkit-scrollbar-corner { background: transparent; }

/* ========== FOCUS ========== */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ========== HIDDEN UTIL ========== */
.hidden { display: none !important; }

/* ========== SKELETON LOADER ========== */
.skeleton {
  background: linear-gradient(90deg, var(--color-secondary) 25%, var(--color-secondary-hover) 50%, var(--color-secondary) 75%);
  background-size: 200% 100%; animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ========== LAYOUT SHELL ========== */
.app-shell { display: flex; min-height: 100vh; }

/* -- Top Nav -- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex; align-items: center;
  padding: 0 var(--space-20);
  gap: var(--space-16);
  box-shadow: var(--shadow-sm);
}
.topbar-hamburger {
  display: none; background: none; border: none; cursor: pointer; padding: var(--space-4);
  color: var(--color-text);
}
.topbar-hamburger svg { display: block; }
.topbar-brand {
  display: flex; align-items: center; gap: var(--space-8);
  font-weight: var(--font-weight-semibold); font-size: 16px;
  color: var(--color-primary); white-space: nowrap; cursor: pointer;
}
.topbar-brand svg { flex-shrink: 0; }
.topbar-search {
  flex: 1; max-width: 480px; position: relative;
}
.topbar-search input {
  width: 100%; padding: var(--space-8) var(--space-12) var(--space-8) 36px;
  border: 1px solid var(--color-border); border-radius: var(--radius-base);
  background: var(--color-background); color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease-standard);
}
.topbar-search input:focus { border-color: var(--color-primary); }
.topbar-search input::placeholder { color: var(--color-text-secondary); }
.topbar-search-icon {
  position: absolute; left: var(--space-10); top: 50%; transform: translateY(-50%);
  color: var(--color-text-secondary); pointer-events: none;
}
.topbar-spacer { flex: 1; }
.topbar-user {
  position: relative;
  display: flex; align-items: center; gap: var(--space-8); cursor: pointer;
  padding: var(--space-4) var(--space-8); border-radius: var(--radius-base);
  transition: background var(--duration-fast) var(--ease-standard);
  user-select: none;
}
.topbar-user:hover, .topbar-user.open { background: var(--color-secondary); }
.topbar-user:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.topbar-user-info { display: flex; flex-direction: column; line-height: 1.2; }
.topbar-user-name { font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); }
.topbar-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--color-brand-light-green); display: flex;
  align-items: center; justify-content: center;
  font-weight: var(--font-weight-semibold); font-size: var(--font-size-sm);
  color: var(--color-brand-green-active); overflow: hidden;
}
.topbar-avatar img {
  width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: block;
}
.topbar-role {
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
}
.topbar-user-caret {
  color: var(--color-text-secondary); flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-standard);
}
.topbar-user.open .topbar-user-caret { transform: rotate(180deg); }

/* Account dropdown menu */
.topbar-user-menu {
  position: absolute; top: calc(100% + 6px); right: 0; min-width: 168px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-base); box-shadow: var(--shadow-md, 0 6px 20px rgba(0, 0, 0, 0.15));
  padding: var(--space-4); z-index: 200;
  opacity: 0; transform: translateY(-4px); pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}
.topbar-user.open .topbar-user-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }
.topbar-user-menu-item {
  display: flex; align-items: center; gap: var(--space-8); width: 100%;
  padding: var(--space-8) var(--space-10); border-radius: var(--radius-sm);
  background: none; border: none; cursor: pointer; text-align: left;
  font-size: var(--font-size-sm); font-family: inherit; color: var(--color-text);
  transition: background var(--duration-fast) var(--ease-standard);
}
.topbar-user-menu-item:hover { background: var(--color-secondary); }
.topbar-user-menu-item svg { color: var(--color-text-secondary); flex-shrink: 0; }

/* -- Impersonation banner (fixed bottom pill, shown only via .visible) -- */
.impersonation-banner {
  display: none;
  position: fixed; left: 50%; bottom: var(--space-20); transform: translateX(-50%);
  z-index: 300; align-items: center; gap: var(--space-12);
  padding: var(--space-10) var(--space-12) var(--space-10) var(--space-16);
  background: var(--color-brand-metropolitan); color: var(--color-brand-soft-white);
  border-radius: 999px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  font-size: var(--font-size-sm); max-width: calc(100vw - var(--space-32));
}
.impersonation-banner.visible { display: flex; }
.impersonation-banner svg { flex-shrink: 0; }
.impersonation-banner strong { font-weight: var(--font-weight-semibold); }
.impersonation-banner .btn {
  background: var(--color-brand-soft-white); color: var(--color-brand-metropolitan);
  border: none; flex-shrink: 0; font-weight: var(--font-weight-medium);
}
.impersonation-banner .btn:hover { opacity: 0.9; }

/* -- Sidebar -- */
.sidebar {
  position: fixed; top: var(--topbar-height); left: 0; bottom: 0;
  width: var(--sidebar-width); background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-16) 0; overflow-y: auto; z-index: 90;
  transition: transform var(--duration-fast) var(--ease-standard);
}
.sidebar-section-label {
  padding: var(--space-8) var(--space-20) var(--space-4);
  font-size: var(--font-size-xs); font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.5px;
}
.sidebar-link {
  display: flex; align-items: center; gap: var(--space-10);
  padding: var(--space-8) var(--space-20); cursor: pointer;
  color: var(--color-text-secondary); font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  transition: all var(--duration-fast) var(--ease-standard);
  text-decoration: none; border: none; background: none; width: 100%; text-align: left;
}
.sidebar-link:hover { background: var(--color-secondary); color: var(--color-text); text-decoration: none; }
.sidebar-link.active {
  color: var(--color-primary); background: rgba(var(--color-brand-green-rgb), 0.08);
  font-weight: var(--font-weight-semibold);
}
.sidebar-link svg { flex-shrink: 0; }

/* -- Main Content -- */
.main-content {
  margin-left: var(--sidebar-width); margin-top: var(--topbar-height);
  padding: var(--space-24) var(--space-32);
  flex: 1; min-height: calc(100vh - var(--topbar-height));
}

/* -- Overlay for mobile -- */
.sidebar-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.3);
  z-index: 85;
}
.sidebar-overlay.visible { display: block; }

/* -- Views -- */
.view { display: none; }
.view.active { display: block; }

/* -- Login page -- */
.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--color-background); padding: var(--space-16);
}
.login-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  padding: var(--space-32); max-width: 400px; width: 100%; text-align: center;
}
.login-brand { color: var(--color-primary); margin-bottom: var(--space-12); }
.login-card h1 { font-size: 22px; font-weight: var(--font-weight-semibold); margin-bottom: var(--space-8); }
.login-card p { color: var(--color-text-secondary); font-size: var(--font-size-sm); margin-bottom: var(--space-20); }
.login-google-btn { width: 100%; justify-content: center; }
.login-hint { margin-top: var(--space-16); font-size: var(--font-size-xs); }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-6);
  padding: var(--space-8) var(--space-16); border: none; border-radius: var(--radius-base);
  font-weight: var(--font-weight-medium); font-size: var(--font-size-base);
  cursor: pointer; transition: all var(--duration-fast) var(--ease-standard);
  line-height: 1.4;
}
.btn-primary {
  background: var(--color-primary); color: var(--color-btn-primary-text);
}
.btn-primary:hover { background: var(--color-brand-green-hover); }
.btn-primary:active { background: var(--color-brand-green-active); }
.btn-secondary {
  background: var(--color-secondary); color: var(--color-text);
}
.btn-secondary:hover { background: var(--color-secondary-hover); }
.btn-danger {
  background: var(--color-error); color: var(--color-white);
}
.btn-danger:hover { opacity: 0.9; }
.btn-ghost {
  background: transparent; color: var(--color-text-secondary);
}
.btn-ghost:hover { background: var(--color-secondary); color: var(--color-text); }
.btn-sm { padding: var(--space-4) var(--space-10); font-size: var(--font-size-sm); }
a.btn:hover { text-decoration: none; }

/* ========== CARDS ========== */
.card {
  background: var(--color-surface); border-radius: var(--radius-base);
  box-shadow: var(--shadow-sm); border: 1px solid var(--color-border);
  transition: box-shadow var(--duration-fast) var(--ease-standard);
  overflow: hidden;
}
.card:hover { box-shadow: var(--shadow-md); }
.card-body { padding: var(--space-16); }

/* ========== GRID ========== */
.grid { display: grid; gap: var(--space-20); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 1024px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ========== BADGES / CHIPS ========== */
.badge {
  display: inline-block; padding: var(--space-2) var(--space-8);
  border-radius: 999px; font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium); background: rgba(var(--color-brand-green-rgb), 0.1);
  color: var(--color-primary);
}
.badge-category {
  cursor: pointer; transition: background var(--duration-fast) var(--ease-standard);
}
.badge-category:hover { background: rgba(var(--color-brand-green-rgb), 0.2); }
.badge-status-published { background: rgba(var(--color-brand-green-rgb), 0.1); color: var(--color-primary); }
.badge-status-draft { background: var(--color-secondary); color: var(--color-text-secondary); }
.badge-external {
  background: #E8F0FE; color: #1A73E8;
}
.badge-internal {
  background: var(--color-secondary); color: var(--color-text-secondary);
}
.badge-make {
  background: var(--color-brand-lighter-tan); color: var(--color-brand-metropolitan);
}
[data-theme="dark"] .badge-make {
  background: var(--color-secondary); color: var(--color-text);
}

/* ========== TABLE ========== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left; padding: var(--space-10) var(--space-12);
  font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary); border-bottom: 2px solid var(--color-border);
}
td {
  padding: var(--space-10) var(--space-12);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-base);
}
tr:hover td { background: var(--color-secondary); }

/* Tables that fill remaining viewport height with a scrolling body and a
   sticky header. The max-height is set per-element by render.fitViewportFills(). */
.table-wrap--fill { overflow: auto; }
.table-wrap--fill thead th {
  position: sticky; top: 0; z-index: 2;
  background: var(--color-surface);
}

/* ========== SECTION HEADER ========== */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-16);
}
.section-header h2 { font-size: 18px; font-weight: var(--font-weight-semibold); }
.categories-wrap { display: flex; flex-wrap: wrap; gap: var(--space-8); }

/* ========== FILTER BAR ========== */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: var(--space-12); align-items: center;
  margin-bottom: var(--space-20);
}
.filter-bar .form-input, .filter-bar .form-select {
  width: auto; min-width: 160px;
}

/* ========== EMPTY STATE ========== */
.empty-state {
  text-align: center; padding: var(--space-32);
  color: var(--color-text-secondary);
}
.empty-state svg { margin-bottom: var(--space-12); opacity: 0.5; }
.empty-state p { font-size: var(--font-size-sm); }

/* ========== PAGINATION ========== */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-4); margin-top: var(--space-24);
}
.pagination-btn {
  padding: var(--space-6) var(--space-12); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); background: var(--color-surface);
  cursor: pointer; font-size: var(--font-size-sm);
  color: var(--color-text);
  transition: all var(--duration-fast) var(--ease-standard);
}
.pagination-btn:hover { background: var(--color-secondary); }
.pagination-btn.active {
  background: var(--color-primary); color: var(--color-white);
  border-color: var(--color-primary);
}
.pagination-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ========== BACK LINK ========== */
.back-link {
  display: inline-flex; align-items: center; gap: var(--space-4);
  font-size: var(--font-size-sm); color: var(--color-text-secondary);
  margin-bottom: var(--space-16); cursor: pointer;
}
.back-link:hover { color: var(--color-primary); text-decoration: none; }

/* ========== TRENDING SECTION ========== */
.trending-card {
  display: flex; align-items: center; gap: var(--space-12);
  cursor: pointer;
}
.trending-rank {
  width: 32px; height: 32px; border-radius: 50%;
  background: rgba(var(--color-brand-green-rgb), 0.1);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-weight-semibold); font-size: var(--font-size-sm);
  color: var(--color-primary); flex-shrink: 0;
}
.trending-info { flex: 1; min-width: 0; }
.trending-title {
  font-size: var(--font-size-base); font-weight: var(--font-weight-semibold);
  color: var(--color-text); white-space: nowrap; overflow: hidden;
  text-overflow: ellipsis;
}
.trending-meta {
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
  display: flex; align-items: center; gap: var(--space-6);
}
.trending-views {
  display: inline-flex; align-items: center; gap: var(--space-4);
}

/* ========== MANUALS ========== */
.manual-card { display: flex; align-items: center; gap: var(--space-16); }
.manual-icon {
  width: 48px; height: 48px; background: rgba(var(--color-brand-green-rgb), 0.08);
  border-radius: var(--radius-base); display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: var(--color-primary);
}
.manual-info { flex: 1; min-width: 0; }
.manual-title { font-weight: var(--font-weight-semibold); margin-bottom: var(--space-2); }
.manual-meta { font-size: var(--font-size-sm); color: var(--color-text-secondary); }

/* ========== ADMIN ========== */
.admin-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-20); flex-wrap: wrap; gap: var(--space-12);
}
.admin-header h1 { font-size: 20px; font-weight: var(--font-weight-semibold); }
.admin-header-hint { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin: 0; }

/* Quick filter chips (e.g. user role filter) */
.filter-chips { display: flex; flex-wrap: wrap; gap: var(--space-8); margin-bottom: var(--space-16); }
.filter-chip {
  padding: var(--space-6) var(--space-12); border: 1px solid var(--color-border);
  border-radius: 999px; background: var(--color-surface); color: var(--color-text-secondary);
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
}
.filter-chip:hover { border-color: var(--color-primary); color: var(--color-text); }
.filter-chip.active {
  border-color: var(--color-primary); color: var(--color-primary);
  background: rgba(var(--color-brand-green-rgb), 0.08);
}
.filter-chip-count {
  margin-left: var(--space-6); font-size: var(--font-size-xs);
  opacity: 0.7; font-weight: var(--font-weight-normal);
}

/* User management table */
.user-cell { display: flex; align-items: center; gap: var(--space-8); }
.user-cell-avatar {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-brand-light-green); color: var(--color-brand-green-active);
  font-weight: var(--font-weight-semibold); font-size: var(--font-size-xs);
}
.user-cell-avatar img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; display: block; }
.form-select-sm { padding: var(--space-4) var(--space-8); font-size: var(--font-size-sm); min-width: 110px; }

/* ========== UPLOAD ZONE ========== */
.upload-zone {
  border: 2px dashed var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-32); text-align: center; cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  margin-bottom: var(--space-20); background: var(--color-surface);
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--color-primary); background: rgba(var(--color-brand-green-rgb), 0.04);
}
.upload-zone-icon { color: var(--color-text-secondary); margin-bottom: var(--space-8); }
.upload-zone p { color: var(--color-text-secondary); font-size: var(--font-size-sm); }
.upload-zone .btn { margin-top: var(--space-12); }
.progress-bar-wrap {
  height: 6px; background: var(--color-secondary); border-radius: 3px;
  overflow: hidden; margin-top: var(--space-12); display: none;
}
.progress-bar-wrap.visible { display: block; }
.progress-bar-fill {
  height: 100%; background: var(--color-primary); border-radius: 3px;
  transition: width 0.3s ease; width: 0%;
}

/* ========== FORM ELEMENTS ========== */
.form-group { margin-bottom: var(--space-16); }
.form-label {
  display: block; margin-bottom: var(--space-4);
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
  color: var(--color-text);
}
.form-label .required { color: var(--color-error); margin-left: var(--space-2); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: var(--space-8) var(--space-12);
  border: 1px solid var(--color-border); border-radius: var(--radius-base);
  background: var(--color-surface); color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease-standard);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-primary);
}
.form-input.error, .form-select.error { border-color: var(--color-error); }
.form-textarea { resize: vertical; min-height: 120px; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-secondary); }
.form-row { display: flex; gap: var(--space-12); }
.form-row .form-group { flex: 1; }
@media (max-width: 480px) { .form-row { flex-direction: column; } }

/* Toggle switch */
.toggle-wrap {
  display: flex; align-items: center; gap: var(--space-10);
}
.toggle-switch {
  position: relative; width: 40px; height: 22px; cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0; background: var(--color-border);
  border-radius: 11px; transition: background var(--duration-fast) var(--ease-standard);
}
.toggle-slider::before {
  content: ''; position: absolute; left: 3px; top: 3px;
  width: 16px; height: 16px; border-radius: 50%; background: var(--color-white);
  transition: transform var(--duration-fast) var(--ease-standard);
}
.toggle-switch input:checked + .toggle-slider {
  background: #1A73E8;
}
.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(18px);
}
.toggle-switch input:focus-visible + .toggle-slider {
  box-shadow: var(--focus-ring);
}
.toggle-label {
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
  color: var(--color-text);
}
.toggle-hint {
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

/* ========== HOME / HERO ========== */
.hero {
  text-align: center; padding: var(--space-32) 0 var(--space-24);
}
.hero h1 {
  font-size: 28px; font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
}
.hero p { color: var(--color-text-secondary); margin-bottom: var(--space-20); }
.hero-search {
  max-width: 560px; margin: 0 auto; position: relative;
}
.hero-search input {
  width: 100%; padding: var(--space-12) var(--space-16) var(--space-12) 44px;
  border: 2px solid var(--color-border); border-radius: var(--radius-lg);
  font-size: 16px; background: var(--color-surface); color: var(--color-text);
  transition: border-color var(--duration-fast) var(--ease-standard);
}
.hero-search input:focus { border-color: var(--color-primary); }
.hero-search-icon {
  position: absolute; left: var(--space-16); top: 50%; transform: translateY(-50%);
  color: var(--color-text-secondary);
}
.hero-ask { margin-top: var(--space-12); }
.hero-ask input { padding-right: 48px; }
.hero-ask-btn {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  padding: 0; border: none; border-radius: var(--radius-base); cursor: pointer;
  background: var(--color-primary); color: var(--color-btn-primary-text);
  transition: opacity var(--duration-fast) var(--ease-standard);
}
.hero-ask-btn:hover { opacity: 0.9; }

/* ========== ARTICLE CARDS ========== */
.article-card-title {
  font-size: var(--font-size-base); font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4); color: var(--color-text);
}
.article-card-excerpt {
  font-size: var(--font-size-sm); color: var(--color-text-secondary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; margin-bottom: var(--space-10);
}
.article-card-meta {
  display: flex; align-items: center; gap: var(--space-6); flex-wrap: wrap;
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
}
.article-card-meta-right {
  margin-left: auto;
}
.article-card-make {
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
  margin-bottom: var(--space-6); display: flex; align-items: center; gap: var(--space-4);
}
.article-card-link {
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
  color: var(--color-primary); cursor: pointer;
}

/* ========== ARTICLE DETAIL ========== */
.article-detail-layout {
  display: grid; grid-template-columns: 1fr 260px; gap: var(--space-24);
}
@media (max-width: 768px) { .article-detail-layout { grid-template-columns: 1fr; } }
.article-detail-header { margin-bottom: var(--space-20); }
.article-detail-header h1 { font-size: 24px; font-weight: var(--font-weight-semibold); margin-bottom: var(--space-8); }
.article-detail-meta {
  display: flex; flex-wrap: wrap; gap: var(--space-12); font-size: var(--font-size-sm);
  color: var(--color-text-secondary); margin-bottom: var(--space-16);
  align-items: center;
}
.article-detail-body { line-height: 1.7; }
.article-detail-body h2 { font-size: 18px; margin: var(--space-20) 0 var(--space-10); font-weight: var(--font-weight-semibold); }
.article-detail-body h3 { font-size: 16px; margin: var(--space-16) 0 var(--space-8); font-weight: var(--font-weight-semibold); }
.article-detail-body p { margin-bottom: var(--space-12); }
.article-detail-body ul, .article-detail-body ol { margin-bottom: var(--space-12); padding-left: var(--space-24); }
.article-detail-body li { margin-bottom: var(--space-4); }
.article-detail-body code {
  background: var(--color-secondary); padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-sm); font-size: var(--font-size-sm);
}
.article-detail-actions { display: flex; gap: var(--space-8); margin-bottom: var(--space-16); }
.article-sidebar-section { margin-bottom: var(--space-20); }
.article-sidebar-section h3 { font-size: var(--font-size-base); font-weight: var(--font-weight-semibold); margin-bottom: var(--space-10); }
.related-link {
  display: block; padding: var(--space-6) 0; font-size: var(--font-size-sm);
  color: var(--color-primary); cursor: pointer;
}

/* Rendered editor content inside the article body */
.article-detail-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-base);
  margin: var(--space-12) 0;
}
.article-detail-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-12) 0;
}
.article-detail-body table td,
.article-detail-body table th {
  border: 1px solid var(--color-border);
  padding: var(--space-8) var(--space-12);
}
.article-detail-body table th {
  background: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}
.article-detail-body blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-16);
  margin: var(--space-12) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}
.article-detail-body pre {
  background: var(--color-brand-metropolitan);
  color: var(--color-brand-soft-white);
  padding: var(--space-16);
  border-radius: var(--radius-base);
  overflow-x: auto;
  margin: var(--space-12) 0;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}
.article-detail-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-20) 0;
}

/* ========== ARTICLE VOTES ========== */
.article-vote-section {
  display: flex; align-items: center; gap: var(--space-16);
  padding: var(--space-12) 0; margin-bottom: var(--space-8);
}
.article-vote-btn {
  display: inline-flex; align-items: center; gap: var(--space-6);
  padding: var(--space-6) var(--space-12); border: 1px solid var(--color-border);
  border-radius: var(--radius-base); background: var(--color-surface);
  cursor: pointer; font-size: var(--font-size-sm); font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-standard);
}
.article-vote-btn:hover { background: var(--color-secondary); color: var(--color-text); }
.article-vote-btn.voted { border-color: var(--color-primary); background: rgba(var(--color-brand-green-rgb), 0.08); color: var(--color-primary); }
.article-vote-btn svg { width: 16px; height: 16px; }

/* ========== REVISION HISTORY ========== */
.revision-badge {
  display: inline-flex; align-items: center; gap: var(--space-4);
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
  cursor: pointer; padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-sm);
  transition: background var(--duration-fast) var(--ease-standard);
}
.revision-badge:hover { background: var(--color-secondary); color: var(--color-primary); }
.revision-badge svg { flex-shrink: 0; }
.revision-history-list { max-height: 300px; overflow-y: auto; }
.revision-item {
  display: flex; align-items: flex-start; gap: var(--space-10);
  padding: var(--space-10) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}
.revision-item:last-child { border-bottom: none; }
.revision-item--clickable {
  cursor: pointer; border-radius: var(--radius-sm);
  padding-left: var(--space-8); padding-right: var(--space-8);
  transition: background var(--duration-fast) var(--ease-standard);
}
.revision-item--clickable:hover { background: var(--color-secondary); }
.revision-view-hint {
  display: inline-flex; align-items: center; gap: var(--space-4);
  align-self: center; margin-left: auto; white-space: nowrap;
  font-size: var(--font-size-xs); color: var(--color-primary);
}
.revision-view-hint--muted { color: var(--color-text-secondary); }
.revision-view-banner {
  background: rgba(var(--color-brand-green-rgb), 0.08);
  color: var(--color-text-secondary);
  border-radius: var(--radius-base);
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-xs);
  margin-bottom: var(--space-16);
}
.revision-number {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 28px; height: 22px; border-radius: var(--radius-sm);
  background: rgba(var(--color-brand-green-rgb), 0.1);
  color: var(--color-primary); font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xs); flex-shrink: 0;
}
.revision-info { flex: 1; }
.revision-author { font-weight: var(--font-weight-medium); }
.revision-date { color: var(--color-text-secondary); font-size: var(--font-size-xs); }

/* ========== COMMENTS ========== */
.comments-section {
  margin-top: var(--space-24);
  padding-top: var(--space-20);
  border-top: 1px solid var(--color-border);
}
.comments-section h2 {
  font-size: 18px; font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-16); display: flex; align-items: center; gap: var(--space-8);
}
.comment-count-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px; border-radius: 999px;
  background: var(--color-secondary); color: var(--color-text-secondary);
  font-size: var(--font-size-xs); font-weight: var(--font-weight-semibold);
}
.comment-input-wrap {
  display: flex; gap: var(--space-10); margin-bottom: var(--space-20); align-items: flex-start;
}
.comment-input-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--color-brand-light-green); display: flex;
  align-items: center; justify-content: center;
  font-weight: var(--font-weight-semibold); font-size: var(--font-size-sm);
  color: var(--color-brand-green-active); flex-shrink: 0; overflow: hidden;
}
.comment-input-avatar img, .comment-avatar img {
  width: 100%; height: 100%; border-radius: 50%; object-fit: cover; display: block;
}
.comment-input-body { flex: 1; }
.comment-input-body textarea {
  width: 100%; padding: var(--space-10) var(--space-12);
  border: 1px solid var(--color-border); border-radius: var(--radius-base);
  background: var(--color-surface); color: var(--color-text);
  resize: vertical; min-height: 64px; font-family: inherit; font-size: var(--font-size-base);
  transition: border-color var(--duration-fast) var(--ease-standard);
}
.comment-input-body textarea:focus { border-color: var(--color-primary); outline: none; }
.comment-input-actions { display: flex; justify-content: flex-end; margin-top: var(--space-8); }
.comment-list { display: flex; flex-direction: column; gap: 0; }
.comment-item {
  display: flex; gap: var(--space-10); padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
}
.comment-item:last-child { border-bottom: none; }
.comment-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--color-secondary); display: flex;
  align-items: center; justify-content: center;
  font-weight: var(--font-weight-semibold); font-size: var(--font-size-xs);
  color: var(--color-text-secondary); flex-shrink: 0; overflow: hidden;
}
.comment-body { flex: 1; min-width: 0; }
.comment-header { display: flex; align-items: center; gap: var(--space-8); margin-bottom: var(--space-4); }
.comment-author { font-weight: var(--font-weight-semibold); font-size: var(--font-size-sm); }
.comment-time { font-size: var(--font-size-xs); color: var(--color-text-secondary); }
.comment-text { font-size: var(--font-size-base); line-height: 1.5; margin-bottom: var(--space-6); }
.comment-actions { display: flex; align-items: center; gap: var(--space-12); }
.comment-vote-btn {
  display: inline-flex; align-items: center; gap: var(--space-4);
  background: none; border: none; cursor: pointer; padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm); font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-standard);
}
.comment-vote-btn:hover { background: var(--color-secondary); color: var(--color-text); }
.comment-vote-btn.voted-up { color: var(--color-primary); }
.comment-vote-btn.voted-down { color: var(--color-error); }
.comment-vote-btn svg { width: 14px; height: 14px; }

/* ========== AI CHAT ========== */
.chat-container {
  display: flex; flex-direction: column;
  /* Fallback height before render.fitViewportFills() sets the exact fill height. */
  height: calc(100vh - var(--topbar-height) - var(--space-24) - var(--space-24));
}
.chat-header { margin-bottom: var(--space-16); }
.chat-header h1 { font-size: 20px; font-weight: var(--font-weight-semibold); margin-bottom: var(--space-4); }
.chat-header p { font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.chat-header-row {
  display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-12);
}
.chat-header-actions { display: flex; gap: var(--space-8); flex-shrink: 0; }
.chat-header-actions .btn { white-space: nowrap; }

/* History dropdown */
.chat-history { position: relative; }
.chat-history-menu {
  position: absolute; top: calc(100% + 6px); right: 0; width: 280px; max-height: 360px;
  overflow-y: auto; background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-base); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  padding: var(--space-4); z-index: 200; display: none;
}
.chat-history.open .chat-history-menu { display: block; }
.chat-history-empty {
  padding: var(--space-16); text-align: center;
  font-size: var(--font-size-sm); color: var(--color-text-secondary);
}
.chat-history-item {
  display: flex; align-items: center; gap: var(--space-8);
  padding: var(--space-8) var(--space-10); border-radius: var(--radius-sm); cursor: pointer;
  transition: background var(--duration-fast) var(--ease-standard);
}
.chat-history-item:hover { background: var(--color-secondary); }
.chat-history-item--active { background: rgba(var(--color-brand-green-rgb), 0.08); }
.chat-history-item-main { flex: 1; min-width: 0; }
.chat-history-item-title {
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); color: var(--color-text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chat-history-item-time { font-size: var(--font-size-xs); color: var(--color-text-secondary); }
.chat-history-delete {
  flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; border: none; background: none; cursor: pointer;
  border-radius: var(--radius-sm); color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-standard);
}
.chat-history-delete:hover { background: var(--color-surface); color: var(--color-error); }
.chat-context-bar {
  display: flex; gap: var(--space-8); align-items: center; margin-bottom: var(--space-10);
  flex-wrap: wrap;
}
.chat-context-bar label { font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); color: var(--color-text-secondary); }
.chat-context-bar select { padding: var(--space-4) var(--space-8); font-size: var(--font-size-sm); }
.chat-messages {
  flex: 1; overflow-y: auto; padding: var(--space-16);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  display: flex; flex-direction: column; gap: var(--space-12);
}
.chat-bubble {
  max-width: 80%; padding: var(--space-10) var(--space-16);
  border-radius: var(--radius-lg); font-size: var(--font-size-base); line-height: 1.5;
}
.chat-bubble-user {
  align-self: flex-end; background: var(--color-primary); color: var(--color-btn-primary-text);
  border-bottom-right-radius: var(--space-4);
}
.chat-bubble-ai {
  align-self: flex-start; background: var(--color-surface); color: var(--color-text);
  border: 1px solid var(--color-border); border-left: 3px solid var(--color-primary);
  border-bottom-left-radius: var(--space-4);
  box-shadow: var(--shadow-sm);
}
.chat-bubble-ai .source-link {
  display: inline-block; margin-top: var(--space-6);
  font-size: var(--font-size-xs); color: var(--color-primary); cursor: pointer;
}
.chat-bubble-ai .source-link:hover { text-decoration: underline; }

/* Rendered markdown inside an AI response */
.chat-bubble-ai p { margin: 0 0 var(--space-8); }
.chat-bubble-ai > p:last-child { margin-bottom: 0; }
.chat-bubble-ai h3, .chat-bubble-ai h4, .chat-bubble-ai h5, .chat-bubble-ai h6 {
  font-weight: var(--font-weight-semibold); line-height: 1.3; margin: var(--space-12) 0 var(--space-6);
}
.chat-bubble-ai h3 { font-size: 16px; }
.chat-bubble-ai h4, .chat-bubble-ai h5, .chat-bubble-ai h6 { font-size: var(--font-size-base); }
.chat-bubble-ai ul, .chat-bubble-ai ol { margin: 0 0 var(--space-8); padding-left: var(--space-20); }
.chat-bubble-ai li { margin-bottom: var(--space-2); }
.chat-bubble-ai a { color: var(--color-primary); text-decoration: underline; }
.chat-bubble-ai code {
  background: var(--color-secondary); padding: 1px var(--space-4); border-radius: var(--radius-sm);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em;
}
.chat-bubble-ai pre {
  background: var(--color-brand-metropolitan); color: var(--color-brand-soft-white);
  padding: var(--space-12); border-radius: var(--radius-base); overflow-x: auto;
  margin: 0 0 var(--space-8); font-size: var(--font-size-sm); line-height: 1.5;
}
.chat-bubble-ai pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
.chat-bubble-ai blockquote {
  border-left: 3px solid var(--color-primary); padding-left: var(--space-12);
  margin: 0 0 var(--space-8); color: var(--color-text-secondary);
}
.chat-bubble-ai hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-10) 0; }
.chat-table-wrap { overflow-x: auto; margin: 0 0 var(--space-8); }
.chat-bubble-ai table { border-collapse: collapse; width: 100%; font-size: var(--font-size-sm); }
.chat-bubble-ai th, .chat-bubble-ai td {
  border: 1px solid var(--color-border); padding: var(--space-6) var(--space-10); text-align: left;
}
.chat-bubble-ai th { background: var(--color-secondary); font-weight: var(--font-weight-semibold); }

/* Per-response actions: copy + thumbs up/down */
.chat-actions {
  display: flex; align-items: center; gap: var(--space-4);
  margin-top: var(--space-8); padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}
.chat-action-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; padding: 0; border-radius: var(--radius-sm);
  background: none; border: none; cursor: pointer; color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-standard);
}
.chat-action-btn:hover { background: var(--color-secondary); color: var(--color-text); }
.chat-action-btn--up { color: var(--color-primary); }
.chat-action-btn--down { color: var(--color-error); }

/* Daily token usage indicator (in the context bar) */
.chat-usage {
  margin-left: auto; display: flex; align-items: center; gap: var(--space-8);
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
}
.chat-usage-bar {
  width: 72px; height: 6px; border-radius: 3px; overflow: hidden;
  background: var(--color-secondary); flex-shrink: 0;
}
.chat-usage-fill {
  display: block; height: 100%; width: 0; border-radius: 3px;
  background: var(--color-primary); transition: width var(--duration-fast) var(--ease-standard);
}
.chat-usage-fill--full { background: var(--color-error); }
/* An AI bubble showing the typing animation while the response generates. */
.chat-bubble-typing {
  display: inline-flex; align-items: center; gap: var(--space-4);
}
.chat-typing-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--color-text-secondary);
  animation: typingBounce 1.2s infinite;
}
.chat-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.chat-typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-4px); }
}
.chat-input-bar {
  display: flex; gap: var(--space-8); padding: var(--space-12);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-top: none; border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.chat-input-bar input { flex: 1; }

/* ========== MODAL ========== */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.35);
  backdrop-filter: blur(4px); z-index: 200;
  display: none; align-items: center; justify-content: center;
  padding: var(--space-16);
}
.modal-overlay.visible { display: flex; }
.modal {
  background: var(--color-surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); max-width: 860px; width: 100%;
  max-height: 90vh; overflow-y: auto;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-16) var(--space-20);
  border-bottom: 1px solid var(--color-border);
}
.modal-header h2 { font-size: 16px; font-weight: var(--font-weight-semibold); }
.modal-close {
  background: none; border: none; cursor: pointer; color: var(--color-text-secondary);
  padding: var(--space-4);
}
.modal-body { padding: var(--space-20); }
.modal-footer {
  display: flex; justify-content: flex-end; gap: var(--space-8);
  padding: var(--space-12) var(--space-20); border-top: 1px solid var(--color-border);
}

/* ========== PDF VIEWER MODAL ========== */
.pdf-viewer-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px); z-index: 200;
  display: none; align-items: center; justify-content: center;
  padding: var(--space-16);
}
.pdf-viewer-overlay.visible { display: flex; }
.pdf-viewer-container {
  background: var(--color-surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md); width: 95%; max-width: 1100px;
  height: 90vh; display: flex; flex-direction: column; overflow: hidden;
}
.pdf-viewer-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-12) var(--space-20);
  border-bottom: 1px solid var(--color-border);
}
.pdf-viewer-header h2 { font-size: 16px; font-weight: var(--font-weight-semibold); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pdf-viewer-header-actions { display: flex; gap: var(--space-8); flex-shrink: 0; }
.pdf-viewer-body { flex: 1; overflow: hidden; }
.pdf-viewer-body iframe, .pdf-viewer-body object { width: 100%; height: 100%; border: none; }

/* ========== TOAST ========== */
.toast-container {
  position: fixed; top: calc(var(--topbar-height) + var(--space-12));
  right: var(--space-16); z-index: 300; display: flex; flex-direction: column; gap: var(--space-8);
}
.toast {
  padding: var(--space-10) var(--space-16); border-radius: var(--radius-base);
  box-shadow: var(--shadow-md); font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium); display: flex; align-items: center; gap: var(--space-8);
  animation: toastIn 0.3s var(--ease-standard);
  max-width: 360px;
  transition: opacity 0.3s ease;
}
.toast-success { background: var(--color-primary); color: var(--color-white); }
.toast-error { background: var(--color-error); color: var(--color-white); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ========== RICH TEXT EDITOR ========== */
.rte {
  border: 1px solid var(--color-border); border-radius: var(--radius-base);
  background: var(--color-surface); overflow: hidden;
  display: flex; flex-direction: column;
}
.rte-toolbar {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  padding: var(--space-6) var(--space-8);
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  align-items: center;
}
.rte-sep {
  width: 1px; height: 20px; background: var(--color-border); margin: 0 var(--space-4);
}
.rte-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border: none; border-radius: var(--radius-sm);
  background: transparent; cursor: pointer; color: var(--color-text);
  transition: all var(--duration-fast) var(--ease-standard);
  padding: 0; flex-shrink: 0;
}
.rte-btn:hover { background: var(--color-secondary-hover); }
.rte-btn.active { background: rgba(var(--color-brand-green-rgb), 0.15); color: var(--color-primary); }
.rte-btn:focus-visible { box-shadow: var(--focus-ring); }
.rte-btn svg { width: 16px; height: 16px; pointer-events: none; }
.rte-btn[disabled] { opacity: 0.35; cursor: not-allowed; }
.rte-select {
  padding: var(--space-2) var(--space-6); height: 30px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-text);
  font-size: var(--font-size-sm); cursor: pointer; min-width: 100px;
}
.rte-select:focus-visible { box-shadow: var(--focus-ring); }
.rte-color-input {
  width: 30px; height: 30px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); cursor: pointer; padding: 2px;
  background: transparent;
}
.rte-content {
  min-height: 360px; max-height: 50vh; overflow-y: auto;
  padding: var(--space-16); outline: none;
  font-family: var(--font-family-base); font-size: var(--font-size-base);
  color: var(--color-text); line-height: 1.7;
}
.rte-content:empty::before {
  content: attr(data-placeholder); color: var(--color-text-secondary);
  pointer-events: none;
}
.rte-content h1 { font-size: 24px; font-weight: var(--font-weight-semibold); margin: var(--space-16) 0 var(--space-8); }
.rte-content h2 { font-size: 18px; font-weight: var(--font-weight-semibold); margin: var(--space-16) 0 var(--space-8); }
.rte-content h3 { font-size: 16px; font-weight: var(--font-weight-semibold); margin: var(--space-12) 0 var(--space-6); }
.rte-content h4 { font-size: var(--font-size-base); font-weight: var(--font-weight-semibold); margin: var(--space-10) 0 var(--space-4); }
.rte-content p { margin: 0 0 var(--space-10); }
.rte-content img { max-width: 100%; height: auto; border-radius: var(--radius-base); margin: var(--space-8) 0; cursor: pointer; }
.rte-content img.selected { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.rte-content table { width: 100%; border-collapse: collapse; margin: var(--space-12) 0; }
.rte-content table td, .rte-content table th { border: 1px solid var(--color-border); padding: var(--space-8) var(--space-12); min-width: 60px; }
.rte-content table th { background: var(--color-secondary); font-weight: var(--font-weight-semibold); }
.rte-content blockquote { border-left: 3px solid var(--color-primary); padding-left: var(--space-16); margin: var(--space-10) 0; color: var(--color-text-secondary); font-style: italic; }
.rte-content pre { background: var(--color-brand-metropolitan); color: var(--color-brand-soft-white); padding: var(--space-16); border-radius: var(--radius-base); overflow-x: auto; font-size: var(--font-size-sm); line-height: 1.6; margin: var(--space-10) 0; white-space: pre-wrap; }
.rte-content code { background: var(--color-secondary); padding: var(--space-2) var(--space-6); border-radius: var(--radius-sm); font-size: var(--font-size-sm); }
.rte-content hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-16) 0; }
.rte-content ul, .rte-content ol { padding-left: var(--space-24); margin-bottom: var(--space-10); }
.rte-content li { margin-bottom: var(--space-4); }
.rte-content a { color: var(--color-primary); }
.rte-source {
  width: 100%; min-height: 360px; max-height: 50vh; border: none;
  padding: var(--space-16); font-family: 'Consolas', 'Monaco', monospace;
  font-size: var(--font-size-sm); color: var(--color-text);
  background: var(--color-background); resize: vertical; outline: none;
  line-height: 1.6; display: none;
}
.rte-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-4) var(--space-10);
  border-top: 1px solid var(--color-border); background: var(--color-background);
  font-size: var(--font-size-xs); color: var(--color-text-secondary);
}
/* RTE Popover for link/table/image */
.rte-popover {
  position: fixed; z-index: 250; background: var(--color-surface);
  border: 1px solid var(--color-border); border-radius: var(--radius-base);
  box-shadow: var(--shadow-md); padding: var(--space-12);
  display: none; min-width: 280px;
}
.rte-popover.visible { display: block; }
.rte-popover h4 { font-size: var(--font-size-sm); font-weight: var(--font-weight-semibold); margin-bottom: var(--space-8); }
.rte-popover .form-group { margin-bottom: var(--space-10); }
.rte-popover .form-label { font-size: var(--font-size-xs); }
.rte-popover .btn-row { display: flex; gap: var(--space-6); justify-content: flex-end; }
/* Fullscreen editor */
.rte.fullscreen {
  position: fixed; inset: 0; z-index: 999;
  border-radius: 0; border: none;
  max-height: none;
}
.rte.fullscreen .rte-content { max-height: none; flex: 1; }
.rte.fullscreen .rte-source { max-height: none; flex: 1; }

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .main-content { padding: var(--space-20) var(--space-24); }
}
@media (max-width: 768px) {
  .topbar-hamburger { display: block; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; padding: var(--space-16); }
  .topbar-search { max-width: 240px; }
}
@media (max-width: 480px) {
  .topbar-search { display: none; }
  .topbar-user span { display: none; }
}