/* =====================================================
   Bookmark Manager — style.css  v2
   Heimdall-inspired dark theme · Pure CSS
   ===================================================== */

/* ── Custom Properties ── */
:root {
  --bg:           #0f1117;
  --surface:      #1a1d27;
  --surface-alt:  #22263a;
  --border:       #2e3250;
  --accent:       #5c6bc0;
  --accent-hover: #7986cb;
  --text:         #e8eaf6;
  --text-muted:   #7986cb;
  --danger:       #ef5350;
  --success:      #66bb6a;
  --warning:      #ffa726;
  --radius:       12px;
  --radius-sm:    6px;
  --shadow:       0 4px 24px rgba(0,0,0,.45);
  --shadow-glow:  0 0 0 2px rgba(92,107,192,.4), 0 4px 24px rgba(0,0,0,.45);
  --transition:   .18s ease;
  --folder-gap:   1.4rem;

  /* card width — overridden by JS via settings slider */
  --card-min: 22vw;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}

/* ══════════════════════════════════════════
   Login Screen
══════════════════════════════════════════ */
#login-screen {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
#login-screen.hidden { display: none; }

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.login-logo  { font-size: 2.5rem; text-align: center; line-height: 1; }
.login-title { font-size: 1.25rem; font-weight: 700; text-align: center; color: var(--accent-hover); }
.login-subtitle { font-size: .82rem; color: var(--text-muted); text-align: center; margin-bottom: .5rem; }

.login-tabs {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: .5rem;
}
.login-tab {
  flex: 1;
  padding: .45rem 0;
  background: transparent;
  color: var(--text-muted);
  font-size: .88rem;
  border: none;
  border-radius: 0;
  transition: background var(--transition), color var(--transition);
}
.login-tab.active {
  background: var(--accent);
  color: #fff;
}
.login-tab:not(.active):hover { background: var(--surface-alt); color: var(--text); }

.login-error {
  font-size: .82rem;
  color: #ef9a9a;
  background: rgba(239,83,80,.12);
  border: 1px solid rgba(239,83,80,.35);
  border-radius: var(--radius-sm);
  padding: .4rem .7rem;
  margin-bottom: .25rem;
}

.login-fields { display: flex; flex-direction: column; gap: .1rem; }

.login-label {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .55rem;
  margin-bottom: .2rem;
}

.login-input {
  width: 100%;
  padding: .5rem .75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  font-size: .9rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}
.login-input:focus { border-color: var(--accent); }
.login-input::placeholder { color: var(--text-muted); }

.login-remember {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-size: .82rem;
  color: var(--text-muted);
  margin-top: .45rem;
  cursor: pointer;
}
.login-remember input { cursor: pointer; accent-color: var(--accent); }

.login-submit-btn {
  width: 100%;
  padding: .6rem 0;
  font-size: .95rem;
  margin-top: .75rem;
  border-radius: var(--radius-sm);
}
.login-submit-btn:disabled { opacity: .6; cursor: not-allowed; }

.login-fine-print {
  font-size: .72rem;
  color: var(--text-muted);
  text-align: center;
  opacity: .7;
  margin-top: .25rem;
}

/* Topbar username badge */
.topbar-user {
  font-size: .78rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .2rem .65rem;
  background: var(--surface-alt);
  white-space: nowrap;
}

/* ── Top Bar ── */
#topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .75rem 1.5rem;
  background: rgba(15,17,23,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

#topbar h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--accent-hover);
  white-space: nowrap;
}
#topbar h1 span { color: var(--text-muted); font-weight: 400; }

#search {
  flex: 1;
  max-width: 420px;
  padding: .45rem .9rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: .9rem;
  outline: none;
  transition: border-color var(--transition);
}
#search:focus  { border-color: var(--accent); }
#search::placeholder { color: var(--text-muted); }

#topbar-actions { display: flex; gap: .5rem; margin-left: auto; align-items: center; }

/* ── Buttons ── */
button {
  cursor: pointer;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .85rem;
  font-family: inherit;
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
  line-height: 1;
}
button:active { transform: scale(.96); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: .45rem .9rem;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: .4rem .7rem;
  border: 1px solid var(--border);
}
.btn-ghost:hover  { background: var(--surface-alt); color: var(--text); }
.btn-danger       { background: var(--danger); color: #fff; padding: .3rem .6rem; }
.btn-danger:hover { background: #c62828; }

/* ── Save Indicator ── */
#save-indicator {
  font-size: .78rem;
  padding: .3rem .7rem;
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: all .3s;
  white-space: nowrap;
}
#save-indicator.saving { border-color: var(--accent);  color: var(--accent);  }
#save-indicator.saved  { border-color: var(--success); color: var(--success); }
#save-indicator.error  { border-color: var(--danger);  color: var(--danger);  }

/* ── Drop Zone ── */
#drop-zone {
  margin: 1.2rem 1.5rem .25rem;
  padding: .85rem 1.5rem;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
  color: var(--text-muted);
  font-size: .88rem;
  transition: all var(--transition);
  user-select: none;
}
#drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(92,107,192,.1);
  color: var(--accent-hover);
}
#drop-zone svg  { vertical-align: middle; margin-right: .4rem; }
.drop-hint      { font-size: .75rem; opacity: .6; margin-left: .5rem; }
.drop-hint kbd  {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .05rem .35rem;
  font-size: .72rem;
  font-family: inherit;
}

/* ── Keyboard hint bar ── */
#kbd-hint {
  margin: .3rem 1.5rem .5rem;
  font-size: .72rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: .45rem;
  flex-wrap: wrap;
}
#kbd-hint kbd {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .05rem .45rem;
  font-family: inherit;
  font-size: .72rem;
  color: var(--text);
}

/* ── Main Content ── */
#app {
  padding: .75rem 1.5rem 4rem;
  max-width: 1800px;
  margin: 0 auto;
}

/* ── Folder Section ── */
.folder {
  margin-bottom: var(--folder-gap);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.folder-header {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .65rem 1rem;
  cursor: pointer;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--border);
  user-select: none;
}
.folder-header:hover { background: rgba(92,107,192,.12); }

.folder-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  font-size: .75rem;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.folder[data-open="true"]  .folder-toggle { transform: rotate(90deg); }
.folder[data-open="false"] .folder-toggle { transform: rotate(0deg); }

.folder-name-input {
  background: transparent;
  border: none;
  color: var(--text);
  font-size: .95rem;
  font-weight: 600;
  outline: none;
  flex: 1;
  cursor: text;
  padding: .1rem .3rem;
  border-radius: 4px;
}
.folder-name-input:hover,
.folder-name-input:focus { background: rgba(255,255,255,.04); }

.folder-count {
  font-size: .75rem;
  color: var(--text-muted);
  background: var(--border);
  border-radius: 999px;
  padding: .1rem .55rem;
  flex-shrink: 0;
}

.folder-actions { display: flex; gap: .4rem; margin-left: auto; }
.folder-actions button { padding: .25rem .55rem; font-size: .75rem; }

.folder-body {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(max(160px, var(--card-min)), 1fr));
  gap: 1rem;
  padding: 1rem;
}
.folder[data-open="false"] .folder-body { display: none; }

/* ── Bookmark Card ── */
.bookmark-card {
  position: relative;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .85rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  transition: border-color var(--transition), box-shadow var(--transition), outline var(--transition);
  outline: none;
  cursor: default;
}
.bookmark-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.bookmark-card.selected {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow);
}
.bookmark-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Card action buttons — flex child of .card-header, always visible */
.card-actions {
  display: flex;
  gap: .22rem;
  flex-shrink: 0;
}

/* Card header: tag selector (flex: 1) + action buttons cluster */
.card-header {
  display: flex;
  align-items: center;
  gap: .35rem;
}
.card-header .tag-select {
  flex: 1;
  width: auto;   /* override width: 100% from .tag-select */
  min-width: 0;
}

.card-btn {
  width: 22px;
  height: 22px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  border-radius: 50%;
  background: transparent;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.card-btn-select { color: var(--text-muted); }
.card-btn-select:hover,
.bookmark-card.selected .card-btn-select {
  color: var(--accent-hover);
  border-color: var(--accent);
  background: rgba(92,107,192,.18);
}

.card-btn-edit { color: var(--accent-hover); }
.card-btn-edit:hover { background: rgba(92,107,192,.2); border-color: var(--accent); }

.card-btn-delete { color: var(--danger); }
.card-btn-delete:hover { background: rgba(239,83,80,.15); border-color: var(--danger); }

/* Top row: favicon + title */
.card-top {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding-right: 1.8rem; /* room for action buttons */
}

.favicon-wrap { position: relative; flex-shrink: 0; }
.favicon-wrap a { display: block; text-decoration: none; }

.favicon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  object-fit: contain;
  background: var(--surface);
  border: 1px solid var(--border);
  display: block;
}

.open-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(92,107,192,.78);
  border-radius: 8px;
  opacity: 0;
  transition: opacity var(--transition);
  font-size: .6rem;
  color: #fff;
  text-decoration: none;
  white-space: nowrap;
}
.favicon-wrap:hover .open-btn { opacity: 1; }

.title-input {
  flex: 1;
  min-height: 52px;
  resize: none;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .88rem;
  font-family: inherit;
  font-weight: 600;
  line-height: 1.35;
  padding: .25rem .4rem;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}
.title-input:hover,
.title-input:focus { border-color: var(--border); background: rgba(255,255,255,.04); }

/* ── Main bookmark row: large favicon + info column + open button ── */
.bm-main-row {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .5rem .6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.bm-main-row .favicon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.bm-main-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .05rem;
  min-width: 0;
}

.bm-main-info .title-input {
  min-height: auto;
  padding: .12rem .3rem;
}

.bm-main-info .url-display {
  padding: 0 .3rem;
}

.open-btn-main {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .38rem .7rem;
  border-radius: var(--radius-sm);
  font-size: .82rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.open-btn-main:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: rgba(92,107,192,.1);
}

/* Domain display */
.url-display {
  font-size: .72rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 .1rem;
}

/* Tag select */
.tag-select {
  width: 100%;
  padding: .3rem .5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: .8rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
}
.tag-select:focus { border-color: var(--accent); }

/* ── iFrame inside card ── */
.card-iframe-wrap {
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border);
  background: #000;
  min-height: 120px;
}
/* Non-YouTube: fixed height */
.card-iframe-wrap.regular { height: 160px; }

/* YouTube: 16:9 aspect ratio trick */
.card-iframe-wrap.is-yt {
  height: 0;
  padding-bottom: 56.25%;
}
.card-iframe-wrap.is-yt .card-iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.card-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.iframe-blocked-note {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,.55);
  color: var(--text-muted);
  font-size: .68rem;
  text-align: center;
  padding: .2rem .4rem;
  pointer-events: none;
}

/* ── YouTube controls ── */
.yt-controls {
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem 0 .1rem;
  flex-wrap: wrap;
}

.yt-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .28rem .65rem;
  border-radius: var(--radius-sm);
  font-size: .8rem;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  white-space: nowrap;
}
.yt-btn:hover { background: var(--surface-alt); border-color: var(--accent); }

.yt-label {
  font-size: .7rem;
  color: var(--text-muted);
  margin-left: auto;
  white-space: nowrap;
}

/* ── Site Preview Card (non-YouTube inline iframe replacement) ── */
.site-preview-card {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .55rem .7rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 60px;
}

.sp-favicon {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: contain;
  flex-shrink: 0;
  background: var(--surface-alt);
}

.sp-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .1rem;
  min-width: 0;
}

.sp-title {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sp-domain {
  font-size: .72rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sp-open {
  flex-shrink: 0;
}

.sp-note {
  font-size: .72rem;
  color: var(--text-muted);
  padding: .2rem .1rem 0;
}

.sp-note kbd {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .05rem .35rem;
  font-size: .7rem;
  font-family: inherit;
  color: var(--text);
}

/* ── Notes details/summary ── */
.notes-details {
  border-top: 1px solid var(--border);
  padding-top: .5rem;
}

.notes-details summary {
  font-size: .75rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: .3rem;
  padding: .1rem 0;
}
.notes-details summary::before {
  content: '▶';
  font-size: .6rem;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.notes-details[open] summary::before { transform: rotate(90deg); }
.notes-details summary::-webkit-details-marker { display: none; }

.notes-area {
  width: 100%;
  margin-top: .45rem;
  min-height: 60px;
  resize: vertical;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .8rem;
  font-family: inherit;
  padding: .45rem .6rem;
  outline: none;
  transition: border-color var(--transition);
}
.notes-area:focus { border-color: var(--accent); }
.notes-area::placeholder { color: var(--text-muted); }

/* ── Empty Folder ── */
.empty-folder {
  grid-column: 1 / -1;
  text-align: center;
  padding: 1.5rem;
  color: var(--text-muted);
  font-size: .85rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
}

/* ══════════════════════════════════════════
   Settings Drawer
══════════════════════════════════════════ */
#settings-overlay-bg {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  backdrop-filter: blur(3px);
  z-index: 140;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s;
}
#settings-overlay-bg.visible { opacity: 1; pointer-events: all; }

#settings-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 360px;
  max-width: 95vw;
  height: 100vh;
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 150;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .25s cubic-bezier(.4,0,.2,1);
  overflow: hidden;
}
#settings-drawer.open { transform: translateX(0); box-shadow: -8px 0 40px rgba(0,0,0,.5); }

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.settings-header h2 { font-size: 1rem; color: var(--text); }

.settings-body {
  padding: 1rem 1.25rem;
  overflow-y: auto;
  flex: 1;
}

.settings-section {
  margin-bottom: 1.8rem;
}
.settings-section h3 {
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-muted);
  margin-bottom: .75rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.settings-scope {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .05rem .5rem;
  font-size: .68rem;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text);
}

.settings-hint {
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: .6rem;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .55rem 0;
  border-bottom: 1px solid var(--border);
  gap: .75rem;
}
.setting-row:last-child { border-bottom: none; }
.setting-row label:first-child { font-size: .88rem; flex: 1; color: var(--text); }

.setting-row.stacked {
  flex-direction: column;
  align-items: stretch;
  gap: .5rem;
}
.setting-row-label {
  display: flex;
  justify-content: space-between;
  font-size: .88rem;
  color: var(--text);
}
.setting-row-label strong { color: var(--accent-hover); }

/* Toggle Switch */
.toggle-switch {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
  cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 999px;
  transition: background .2s;
}
.toggle-track::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  transition: transform .2s;
  box-shadow: 0 1px 4px rgba(0,0,0,.3);
}
.toggle-switch input:checked + .toggle-track { background: var(--accent); }
.toggle-switch input:checked + .toggle-track::before { transform: translateX(18px); }
.toggle-switch input:focus-visible + .toggle-track { outline: 2px solid var(--accent-hover); }

/* Range Slider */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  transition: background .15s, transform .15s;
  box-shadow: 0 1px 4px rgba(0,0,0,.3);
}
input[type="range"]::-webkit-slider-thumb:hover {
  background: var(--accent-hover);
  transform: scale(1.15);
}

/* Folder Override rows */
.folder-override-row {
  padding: .65rem 0;
  border-bottom: 1px solid var(--border);
}
.folder-override-row:last-child { border-bottom: none; }

.folder-override-name {
  font-size: .83rem;
  font-weight: 600;
  display: block;
  margin-bottom: .45rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.folder-override-controls { display: flex; gap: .75rem; }

.override-label {
  font-size: .72rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.override-select {
  padding: .28rem .5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  font-size: .78rem;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
}
.override-select:focus { border-color: var(--accent); }

/* ══════════════════════════════════════════
   Quick Look Overlay
══════════════════════════════════════════ */
#quicklook-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5,6,10,.94);
  z-index: 200;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
#quicklook-overlay.active {
  opacity: 1;
  pointer-events: all;
}

#quicklook-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .6rem 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  min-height: 54px;
  flex-shrink: 0;
  flex-wrap: wrap;
  gap: .6rem;
}

#quicklook-info {
  display: flex;
  align-items: center;
  gap: .65rem;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}
#ql-favicon {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  flex-shrink: 0;
  object-fit: contain;
}
#ql-title {
  font-weight: 600;
  font-size: .95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#ql-domain {
  font-size: .75rem;
  color: var(--text-muted);
  white-space: nowrap;
  text-decoration: none;
}
#ql-domain:hover { color: var(--accent-hover); text-decoration: underline; }

#quicklook-controls {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-shrink: 0;
  flex-wrap: wrap;
}

#ql-yt-controls { display: flex; gap: .4rem; align-items: center; }
#ql-yt-controls[hidden] { display: none !important; }

.ql-action {
  padding: .38rem .8rem;
  font-size: .82rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: .3rem;
}

/* The HTML [hidden] attribute's display:none is overridden by explicit display
   rules below, so we reinforce it with !important here. */
[hidden] { display: none !important; }

#ql-frame-wrap {
  flex: 1;
  display: flex;
  overflow: hidden;
  padding: .6rem;
  position: relative;
}

#ql-iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius);
  background: #fff;
  display: block;
}

/* ── Quick Look: non-YouTube link-preview panel ── */
/* Using ::before/::after flex spacers instead of justify-content:center so
   that content is centred when short but remains fully scrollable when tall.
   justify-content:center clips overflow-top, making it unreachable. */
#ql-link-preview {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 2rem;
  text-align: center;
  overflow-y: auto;
}
#ql-link-preview::before,
#ql-link-preview::after {
  content: '';
  flex: 1;
  min-height: .5rem;
}

.ql-preview-favicon {
  width: 96px;
  height: 96px;
  border-radius: 18px;
  object-fit: contain;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.ql-preview-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  max-width: 600px;
  line-height: 1.25;
}

.ql-preview-domain {
  font-size: .95rem;
  color: var(--text-muted);
}

.ql-tags {
  display: flex;
  gap: .4rem;
  justify-content: center;
  flex-wrap: wrap;
}

.ql-tag {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .18rem .7rem;
  font-size: .78rem;
  color: var(--text-muted);
}

.ql-preview-notes {
  max-width: 480px;
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.55;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .65rem .9rem;
}

.ql-preview-open {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: .65rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}
.ql-preview-open:hover { background: var(--accent-hover); transform: translateY(-1px); }
.ql-preview-open:active { transform: scale(.97); }

.ql-preview-hint {
  font-size: .78rem;
  color: var(--text-muted);
  max-width: 380px;
  line-height: 1.55;
  opacity: .75;
}

/* ══════════════════════════════════════════
   Modals
══════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 180;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}
.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  min-width: 320px;
  max-width: 480px;
  width: 90%;
  box-shadow: var(--shadow);
  transform: translateY(10px);
  transition: transform .2s;
}
.modal-overlay.active .modal { transform: translateY(0); }

.modal h2 { font-size: 1rem; margin-bottom: 1.1rem; color: var(--text); }

.field-label {
  display: block;
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: .25rem;
}
.optional { opacity: .6; }

.modal input[type="text"],
.modal input[type="url"],
.modal-select {
  width: 100%;
  padding: .5rem .75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  font-size: .9rem;
  font-family: inherit;
  outline: none;
  margin-bottom: .85rem;
  transition: border-color var(--transition);
}
.modal input:focus,
.modal-select:focus { border-color: var(--accent); }
.modal-select { cursor: pointer; }

.modal-actions {
  display: flex;
  gap: .6rem;
  justify-content: flex-end;
  margin-top: 1rem;
}

/* Tag pills */
.tag-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: .85rem;
  min-height: 32px;
}
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .22rem .7rem;
  font-size: .78rem;
  color: var(--text);
}
.tag-pill button {
  background: none;
  color: var(--danger);
  font-size: .8rem;
  padding: 0;
  line-height: 1;
  border: none;
}

.tag-add-row {
  display: flex;
  gap: .5rem;
  margin-bottom: .5rem;
}
.tag-add-input {
  flex: 1;
  padding: .45rem .6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  font-family: inherit;
  font-size: .88rem;
  outline: none;
  transition: border-color var(--transition);
}
.tag-add-input:focus { border-color: var(--accent); }

/* ══════════════════════════════════════════
   Toast
══════════════════════════════════════════ */
#toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .55rem 1.2rem;
  border-radius: 999px;
  font-size: .85rem;
  box-shadow: var(--shadow);
  transition: transform .3s ease;
  z-index: 300;
  white-space: nowrap;
  pointer-events: none;
}
#toast.show { transform: translateX(-50%) translateY(0); }

/* ══════════════════════════════════════════
   Scrollbar
══════════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ══════════════════════════════════════════
   Responsive
══════════════════════════════════════════ */
@media (max-width: 768px) {
  :root { --card-min: 44vw; }

  #topbar { flex-wrap: wrap; gap: .5rem; padding: .6rem 1rem; }
  #topbar h1 { order: -1; }
  #search { max-width: 100%; order: 1; flex-basis: 100%; }
  #topbar-actions { order: 2; width: 100%; justify-content: flex-end; flex-wrap: wrap; }

  #drop-zone  { margin: .6rem 1rem .25rem; }
  #kbd-hint   { margin: .2rem 1rem .4rem; }
  #app        { padding: .5rem 1rem 3rem; }

  #settings-drawer { width: 100%; max-width: 100%; }
  .folder-body { gap: .65rem; padding: .65rem; }

  #quicklook-bar { gap: .4rem; }
  #ql-title { font-size: .85rem; max-width: 140px; }
}

@media (max-width: 480px) {
  :root { --card-min: 90vw; }
  .card-top { padding-right: 1.4rem; }
}

/* ══════════════════════════════════════════
   Card action: sub-link (🔗) button
══════════════════════════════════════════ */
.card-btn-sub { color: var(--success); }
.card-btn-sub:hover {
  background: rgba(102,187,106,.18);
  border-color: var(--success);
}

/* ══════════════════════════════════════════
   Sub-links Section (inside bookmark card)
══════════════════════════════════════════ */

/* Hidden when no sub-links AND form is not visible */
.sub-links-section.sl-empty { display: none; }

.sub-links-section {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  border-top: 1px solid var(--border);
  padding-top: .5rem;
}

/* Sub-link list */
.sub-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.sl-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .3rem .45rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color var(--transition), background var(--transition);
}
.sl-item:hover { border-color: var(--accent); background: rgba(92,107,192,.08); }

.sl-favicon {
  width: 18px;
  height: 18px;
  border-radius: 3px;
  object-fit: contain;
  background: var(--surface-alt);
  flex-shrink: 0;
}

.sl-info {
  flex: 1;
  display: flex;
  align-items: baseline;
  gap: .4rem;
  min-width: 0;
  overflow: hidden;
}

.sl-title {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 55%;
}

.sl-domain {
  font-size: .68rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sl-open {
  flex-shrink: 0;
  padding: .2rem .45rem;
  font-size: .72rem;
}

.sl-del-btn {
  flex-shrink: 0;
  background: transparent;
  border: none;
  color: var(--danger);
  font-size: .72rem;
  padding: .15rem .3rem;
  border-radius: 4px;
  opacity: 0;
  transition: opacity var(--transition), background var(--transition);
  cursor: pointer;
}
.sl-item:hover .sl-del-btn { opacity: 1; }
.sl-del-btn:hover { background: rgba(239,83,80,.15); }

/* Sub-link add-form */
.sl-add-form {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: .45rem .5rem;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
}

.sl-url-inp,
.sl-title-inp {
  width: 100%;
  padding: .35rem .55rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  font-size: .8rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}
.sl-url-inp:focus,
.sl-title-inp:focus { border-color: var(--accent); }
.sl-url-inp::placeholder,
.sl-title-inp::placeholder { color: var(--text-muted); }

.sl-form-btns {
  display: flex;
  gap: .4rem;
  justify-content: flex-end;
}
.sl-form-btns button { padding: .28rem .65rem; font-size: .78rem; }

/* ══════════════════════════════════════════
   Sub-link Popup (Space bar chooser)
══════════════════════════════════════════ */
#sublink-popup {
  /* inherits .modal-overlay: fixed inset-0, z-180, backdrop, flex center */
  align-items: center;
  justify-content: center;
}

#sublink-popup-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 320px;
  max-width: 520px;
  width: 90%;
  max-height: 68vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transform: translateY(10px);
  transition: transform .2s;
}
#sublink-popup.active #sublink-popup-inner { transform: translateY(0); }

.slp-hint-top {
  padding: .6rem 1rem;
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#slp-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
}

.slp-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .7rem 1rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  border-left: 3px solid transparent;
}
.slp-item:last-child { border-bottom: none; }
.slp-item:hover,
.slp-item.slp-active {
  background: rgba(92,107,192,.13);
  border-left-color: var(--accent);
}

.slp-favicon {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  object-fit: contain;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.slp-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .1rem;
  min-width: 0;
}

.slp-title {
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.slp-domain {
  font-size: .75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.slp-badge {
  font-size: .65rem;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: .12rem .55rem;
  flex-shrink: 0;
  letter-spacing: .03em;
}

.slp-hint-bottom {
  padding: .5rem 1rem;
  font-size: .72rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  text-align: center;
  flex-shrink: 0;
}
.slp-hint-bottom kbd {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: .05rem .4rem;
  font-family: inherit;
  font-size: .7rem;
  color: var(--text);
}

/* ══════════════════════════════════════════
   Quick Look: sub-links panel
══════════════════════════════════════════ */
.ql-sublinks {
  width: 100%;
  max-width: 560px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  /* overflow: hidden would collapse height inside a flex column — use
     clip-path on children for rounded corners instead */
  overflow: visible;
}

.ql-sublinks-label {
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  padding: .45rem .9rem;
  border-bottom: 1px solid var(--border);
}

.ql-sublink-item {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .55rem .9rem;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
.ql-sublink-item:last-child { border-bottom: none; }
.ql-sublink-item:hover { background: rgba(92,107,192,.12); }
.ql-sublink-item img {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  object-fit: contain;
  background: var(--surface);
  flex-shrink: 0;
}

.ql-sublink-title {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ql-sublink-domain {
  font-size: .72rem;
  color: var(--text-muted);
  white-space: nowrap;
}