/* summaries.css — Albayyan Summaries mode styles
 * Uses only existing CSS custom properties from tokens.css.
 * All layouts are RTL-first.
 */

/* ── Screen layout ──────────────────────────────────────────────────────────── */
#summariesScreen {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
  direction: rtl;
}

.sum-shell {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar / TOC ──────────────────────────────────────────────────────────── */
.sum-sidebar {
  width: var(--sidebar-width);
  border-left: 1px solid var(--border);
  background: rgba(23, 23, 23, 0.94);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
  transition: transform 0.22s ease;
}

html[data-theme="light"] .sum-sidebar {
  background: rgba(239, 239, 235, 0.97);
}

.sum-sidebar-header {
  padding: var(--space-4) var(--space-5) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ── Sidebar view tabs ──────────────────────────────────────────────────────── */
.sum-sidebar-tab-row {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sum-sidebar-tab {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  background: transparent;
  color: var(--muted);
  border: none;
  min-height: 36px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.sum-sidebar-tab:hover:not(.active) {
  color: var(--text);
  background: rgba(255, 255, 255, 0.055);
}

html[data-theme="light"] .sum-sidebar-tab:hover:not(.active) {
  background: rgba(0, 0, 0, 0.045);
}

.sum-sidebar-tab.active {
  background: var(--accent);
  color: #fff;
}

.sum-search-input {
  width: 100%;
  box-sizing: border-box;
  padding: 6px var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--surface-raised);
  color: var(--text);
  font-size: var(--text-sm);
  font-family: inherit;
  direction: rtl;
}
.sum-search-input:focus { outline: 2px solid var(--accent); }

.sum-tree {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-2) 0;
}

.sum-semester-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--faint);
  padding: var(--space-2) var(--space-3) var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.sum-semester-label:hover { color: var(--muted); }
.sum-semester-arrow { transition: transform 0.18s; font-size: 1.2em; }
.sum-semester-label.collapsed .sum-semester-arrow { transform: rotate(90deg); }

.sum-semester-subjects {
  overflow: hidden;
  transition: max-height 0.24s ease;
}
.sum-semester-subjects.collapsed { max-height: 0 !important; }

.sum-subject-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--muted);
  padding: var(--space-1) var(--space-4) var(--space-1) var(--space-4);
  padding-inline-start: var(--space-6);
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.sum-subject-label:hover { color: var(--text); }
.sum-subject-arrow { transition: transform 0.18s; font-size: 1.1em; }
.sum-subject-label.collapsed .sum-subject-arrow { transform: rotate(90deg); }

.sum-pages-list {
  overflow: hidden;
  transition: max-height 0.22s ease;
}
.sum-pages-list.collapsed { max-height: 0 !important; }

.sum-page-link {
  display: block;
  padding: 5px var(--space-5) 5px var(--space-6);
  padding-inline-start: var(--space-10);
  font-size: var(--text-sm);
  color: var(--muted);
  cursor: pointer;
  border-right: 2px solid transparent;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sum-page-link:hover { color: var(--text); background: var(--surface-raised); }
.sum-page-link.active {
  color: var(--accent);
  border-right-color: var(--accent);
  background: var(--surface-raised);
  font-weight: 600;
}

/* ── Main content area ───────────────────────────────────────────────────────── */
.sum-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}


.sum-viewer {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-5) var(--space-6);
  position: relative;
}

/* ── Progress bar ────────────────────────────────────────────────────────────── */
.sum-progress-bar {
  position: sticky;
  top: 0;
  height: 3px;
  background: var(--border);
  z-index: 10;
  flex-shrink: 0;
}
.sum-progress-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.1s linear;
}

/* ── DRM overlay canvas ──────────────────────────────────────────────────────── */
#sumWatermarkCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100dvh;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.14;
  mix-blend-mode: multiply;
}

/* ── Rendered Markdown content ───────────────────────────────────────────────── */
.sum-content-wrapper {
  font-family: 'Noto Sans Arabic', 'Segoe UI', sans-serif;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text);
  direction: rtl;
  text-align: right;

  /* DRM: disable text selection */
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.sum-content-wrapper h1,
.sum-content-wrapper .sum-h1 { font-size: 1.6rem; font-weight: 800; margin: 1.4em 0 0.5em; color: var(--accent); border-bottom: 2px solid var(--border); padding-bottom: 0.3em; }
.sum-content-wrapper h2,
.sum-content-wrapper .sum-h2 { font-size: 1.3rem; font-weight: 700; margin: 1.2em 0 0.4em; color: var(--text); }
.sum-content-wrapper h3,
.sum-content-wrapper .sum-h3 { font-size: 1.1rem; font-weight: 600; margin: 1em 0 0.3em; }
.sum-content-wrapper h4,
.sum-content-wrapper .sum-h4 { font-size: 1rem; font-weight: 600; margin: 0.9em 0 0.3em; }

.sum-content-wrapper p { margin: 0.6em 0; }
.sum-content-wrapper strong { font-weight: 700; }
.sum-content-wrapper em { font-style: italic; }
.sum-content-wrapper u { text-decoration: underline; text-underline-offset: 2px; }
.sum-content-wrapper del { text-decoration: line-through; color: var(--muted); }

.sum-content-wrapper ul,
.sum-content-wrapper ol { padding-right: 1.5em; padding-left: 0; margin: 0.5em 0; }
.sum-content-wrapper li { margin: 0.25em 0; }

.sum-content-wrapper blockquote {
  border-right: 4px solid var(--accent);
  padding-right: var(--space-4);
  margin: 0.8em 0;
  color: var(--muted);
  font-style: italic;
}

.sum-content-wrapper code {
  background: var(--surface-raised);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: monospace;
}

.sum-content-wrapper pre {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-3) var(--space-4);
  overflow-x: auto;
  margin: 0.8em 0;
}

.sum-content-wrapper table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.8em 0;
  font-size: var(--text-sm);
}
.sum-content-wrapper th,
.sum-content-wrapper td {
  border: 1px solid var(--border);
  padding: 6px var(--space-3);
  text-align: right;
}
.sum-content-wrapper th {
  background: var(--surface-raised);
  font-weight: 700;
}

/* footnotes */
.sum-content-wrapper .footnotes {
  margin-top: 2em;
  border-top: 1px solid var(--border);
  padding-top: 1em;
  font-size: var(--text-sm);
  color: var(--muted);
}
.sum-content-wrapper sup a { color: var(--accent); text-decoration: none; }

/* ── Collapsible headings ────────────────────────────────────────────────────── */
.sum-collapse-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  padding: 0;
  margin-left: 6px;
  line-height: 1;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.1em;
  height: 1.1em;
  vertical-align: middle;
  transition: color 0.12s, transform 0.18s;
  /* Triangle via border trick */
  position: relative;
  top: -0.05em;
}
.sum-collapse-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-top: 0.32em solid transparent;
  border-bottom: 0.32em solid transparent;
  border-left: 0.5em solid currentColor;
  transform: rotate(-90deg);
  transition: transform 0.18s;
}
.sum-collapse-btn.collapsed::after {
  transform: rotate(0deg);
}
.sum-collapse-btn:hover { color: var(--accent); }

.sum-collapsible-section {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 0.22s ease;
}
.sum-collapsible-section.collapsed {
  grid-template-rows: 0fr;
}
.sum-collapsible-inner {
  overflow: hidden;
}

/* wikilinks */
.sum-wikilink {
  color: var(--accent);
  text-decoration: underline;
  cursor: pointer;
}

/* ── Empty / loading states ──────────────────────────────────────────────────── */
.sum-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--space-3);
  color: var(--faint);
  font-size: var(--text-sm);
  text-align: center;
  padding: var(--space-6);
}

/* ── First-time hint arrow ───────────────────────────────────────────────────── */
.sum-first-hint {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  color: var(--accent);
  font-size: var(--text-sm);
  font-weight: 600;
}
.sum-first-hint.hidden { display: none; }

.sum-hint-arrow {
  font-size: 1.6rem;
  line-height: 1;
  animation: sumHintBounce 0.8s ease-in-out infinite alternate;
  display: inline-block;
}
@keyframes sumHintBounce {
  from { transform: translate(0, 0); }
  to   { transform: translate(6px, -6px); }
}

.sum-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: sumSpin 0.7s linear infinite;
}
@keyframes sumSpin { to { transform: rotate(360deg); } }

/* ── Comment panel ───────────────────────────────────────────────────────────── */
.sum-comment-panel {
  border-top: 1px solid var(--border);
  padding: var(--space-3) var(--space-5);
  background: var(--surface);
  flex-shrink: 0;
  display: none;
}
.sum-comment-panel.open { display: block; }

.sum-comment-title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.sum-comment-list {
  max-height: 180px;
  overflow-y: auto;
  margin-bottom: var(--space-2);
}

.sum-comment-item {
  padding: var(--space-2) var(--space-3);
  border-radius: 12px;
  background: var(--surface-raised);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}
.sum-comment-meta {
  font-size: var(--text-xs);
  color: var(--faint);
  margin-top: 2px;
}

.sum-comment-form {
  display: flex;
  gap: var(--space-2);
  align-items: flex-end;
}
.sum-comment-textarea {
  flex: 1;
  min-height: 56px;
  resize: vertical;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-raised);
  color: var(--text);
  font-size: var(--text-sm);
  font-family: inherit;
  direction: rtl;
}
.sum-comment-textarea:focus { outline: 2px solid var(--accent); }

/* ── Search results panel (sits between search row and tree, slides tree down) ── */
.sum-search-results {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.25s ease;
  border-bottom: 1px solid var(--border);
}
.sum-search-results.open {
  max-height: 420px;
  overflow-y: auto;
}
.sum-search-result-item {
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  border-bottom: 1px solid var(--border);
}
.sum-search-result-item:last-child { border-bottom: none; }
.sum-search-result-item:hover { background: var(--surface-raised); }
.sum-search-result-title { font-size: var(--text-sm); font-weight: 600; }
.sum-search-result-sub {
  font-size: var(--text-xs);
  color: var(--muted);
  margin-top: 2px;
}

/* ── Bookmarks badge ─────────────────────────────────────────────────────────── */
/* ── Bookmarks toggle button active state ────────────────────────────────────── */
#sumTabBookmarks.active {
  background: rgba(245, 158, 11, 0.10);
  border-color: rgba(245, 158, 11, 0.35) !important;
  color: #f59e0b !important;
}

/* ── Page footer bookmark button ─────────────────────────────────────────────── */
.sum-page-bm-btn {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--muted);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  min-height: 32px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.sum-page-bm-btn:hover {
  color: var(--text);
  border-color: var(--border-strong);
  background: var(--surface-raised);
}
.sum-page-bm-btn.bookmarked {
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.35);
  background: rgba(245, 158, 11, 0.08);
}

/* ── Mobile sidebar toggle ───────────────────────────────────────────────────── */
@media (max-width: 680px) {
  .sum-sidebar {
    position: fixed;
    right: 0;
    top: 0;
    height: 100dvh;
    z-index: 200;
    transform: translateX(100%);
    box-shadow: -4px 0 20px rgba(0,0,0,0.2);
  }
  #summariesScreen.sum-sidebar-open .sum-sidebar {
    transform: translateX(0);
  }
  .sum-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: 199;
  }
  #summariesScreen.sum-sidebar-open .sum-sidebar-backdrop { display: block; }

  #sumSidebarDismissBtn {
    position: fixed;
    z-index: 201;
    top: calc(var(--space-5) + 24px);
    right: calc(var(--sidebar-width) + var(--space-2));
    transform: translateY(-50%);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--surface-raised, var(--surface));
    color: var(--text);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  }

  #summariesScreen.sum-sidebar-open #sumSidebarDismissBtn {
    display: grid;
    place-items: center;
  }
}

/* ── DRM: print kill ─────────────────────────────────────────────────────────── */
@media print {
  #summariesScreen,
  .sum-content-wrapper,
  body { display: none !important; }
}

/* ── Admin summaries panel ───────────────────────────────────────────────────── */
.sum-admin-editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
}
@media (max-width: 900px) {
  .sum-admin-editor-grid { grid-template-columns: 1fr; }
}

.sum-admin-md-editor {
  width: 100%;
  box-sizing: border-box;
  min-height: 420px;
  resize: vertical;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-raised);
  color: var(--text);
  font-size: var(--text-sm);
  font-family: 'Noto Sans Arabic', monospace;
  direction: rtl;
  line-height: 1.7;
}
.sum-admin-md-editor:focus { outline: 2px solid var(--accent); }

.sum-admin-preview {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-3) var(--space-4);
  background: var(--surface);
  min-height: 420px;
  overflow-y: auto;
  font-size: var(--text-sm);
  direction: rtl;
}

.sum-version-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--border);
  font-size: var(--text-xs);
}
.sum-version-item:last-child { border-bottom: none; }

/* ── Floating action button (FAB) ────────────────────────────────────────────── */
.sum-fab {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  border: none;
  padding: 0;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.12s, box-shadow 0.15s;
}
.sum-fab:hover  { transform: scale(1.07); box-shadow: 0 6px 20px rgba(0,0,0,0.3); }
.sum-fab:active { transform: scale(0.97); }
.sum-fab.hidden { display: none; }