/* ============================================================
   Rfoof – application styles (Fluent-inspired, RTL-aware)
   ============================================================ */
:root {
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, "Noto Sans Arabic", "Noto Naskh Arabic", sans-serif;
  --mono: "Cascadia Code", "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;

  --bg: #f3f3f3;
  --surface: #ffffff;
  --surface-2: #f9f9f9;
  --surface-3: #f0f0f0;
  --surface-hover: rgba(0,0,0,.045);
  --surface-active: rgba(0,0,0,.08);
  --text: #1b1b1b;
  --text-2: #5c5c5c;
  --text-3: #8a8a8a;
  --border: rgba(0,0,0,.09);
  --border-strong: rgba(0,0,0,.18);
  --accent: #2f6fdb;
  --accent-hover: #2864c8;
  --accent-text: #ffffff;
  --accent-soft: rgba(47,111,219,.12);
  --accent-soft-2: rgba(47,111,219,.2);
  --danger: #d13438;
  --danger-soft: rgba(209,52,56,.12);
  --success: #107c10;
  --warn: #b7850c;
  --shadow-1: 0 1px 2px rgba(0,0,0,.06), 0 1px 1px rgba(0,0,0,.04);
  --shadow-2: 0 8px 24px rgba(0,0,0,.14), 0 2px 6px rgba(0,0,0,.08);
  --shadow-3: 0 24px 64px rgba(0,0,0,.24), 0 6px 20px rgba(0,0,0,.14);
  --radius: 8px;
  --radius-lg: 14px;
  --radius-sm: 6px;
  --sidebar-w: 268px;
  --details-w: 328px;
  --topbar-h: 56px;
  --card-w: 200px;
  --card-h: 214px;
  --thumb-h: 132px;
  --row-h: 44px;
  --ease: cubic-bezier(.2,.8,.2,1);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #1c1c1c;
  --surface: #282828;
  --surface-2: #2f2f2f;
  --surface-3: #363636;
  --surface-hover: rgba(255,255,255,.06);
  --surface-active: rgba(255,255,255,.1);
  --text: #f2f2f2;
  --text-2: #bdbdbd;
  --text-3: #8b8b8b;
  --border: rgba(255,255,255,.09);
  --border-strong: rgba(255,255,255,.2);
  --accent: #5b9cff;
  --accent-hover: #74acff;
  --accent-text: #0b1a33;
  --accent-soft: rgba(91,156,255,.16);
  --accent-soft-2: rgba(91,156,255,.28);
  --danger: #ff6b6e;
  --danger-soft: rgba(255,107,110,.16);
  --success: #6ccb5f;
  --warn: #f2c14e;
  --shadow-1: 0 1px 2px rgba(0,0,0,.4);
  --shadow-2: 0 8px 24px rgba(0,0,0,.5), 0 2px 6px rgba(0,0,0,.4);
  --shadow-3: 0 24px 64px rgba(0,0,0,.6), 0 6px 20px rgba(0,0,0,.5);
  color-scheme: dark;
}
:root[data-accent="teal"]   { --accent:#0f8f86; --accent-hover:#0c7a72; --accent-soft:rgba(15,143,134,.13); --accent-soft-2:rgba(15,143,134,.24); }
:root[data-accent="violet"] { --accent:#7a5af5; --accent-hover:#6a4be0; --accent-soft:rgba(122,90,245,.13); --accent-soft-2:rgba(122,90,245,.24); }
:root[data-accent="green"]  { --accent:#2e8b57; --accent-hover:#27794b; --accent-soft:rgba(46,139,87,.13); --accent-soft-2:rgba(46,139,87,.24); }
:root[data-accent="orange"] { --accent:#d9730d; --accent-hover:#c0650a; --accent-soft:rgba(217,115,13,.13); --accent-soft-2:rgba(217,115,13,.24); }
:root[data-accent="rose"]   { --accent:#d6336c; --accent-hover:#bf2c5f; --accent-soft:rgba(214,51,108,.13); --accent-soft-2:rgba(214,51,108,.24); }
:root[data-accent="graphite"] { --accent:#4b5563; --accent-hover:#3f4855; --accent-soft:rgba(75,85,99,.13); --accent-soft-2:rgba(75,85,99,.24); }
:root[data-theme="dark"][data-accent="teal"]   { --accent:#3ec9be; --accent-hover:#5ad6cc; --accent-text:#03211f; }
:root[data-theme="dark"][data-accent="violet"] { --accent:#a58cff; --accent-hover:#b8a3ff; --accent-text:#160d3a; }
:root[data-theme="dark"][data-accent="green"]  { --accent:#5fc98a; --accent-hover:#79d69e; --accent-text:#052613; }
:root[data-theme="dark"][data-accent="orange"] { --accent:#f5a04a; --accent-hover:#f7b064; --accent-text:#2a1500; }
:root[data-theme="dark"][data-accent="rose"]   { --accent:#ff7aa6; --accent-hover:#ff95b8; --accent-text:#33071a; }
:root[data-theme="dark"][data-accent="graphite"] { --accent:#a9b3c2; --accent-hover:#bcc5d2; --accent-text:#10151c; }

:root[data-density="small"]  { --card-w: 160px; --card-h: 176px; --thumb-h: 104px; }
:root[data-density="large"]  { --card-w: 248px; --card-h: 262px; --thumb-h: 176px; }

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font); font-size: 14px; line-height: 1.45; color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased; overflow: hidden; overscroll-behavior: none;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; padding: 0; }
button:disabled { cursor: default; opacity: .5; }
a { color: var(--accent); }
::selection { background: var(--accent-soft-2); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }
.ic { flex: none; display: inline-block; vertical-align: middle; }
[dir="rtl"] .flip { transform: scaleX(-1); }
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-thumb { background: rgba(128,128,128,.35); border: 3px solid transparent; border-radius: 8px; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: rgba(128,128,128,.55); background-clip: padding-box; border: 3px solid transparent; }
::-webkit-scrollbar-track { background: transparent; }
.bdi { unicode-bidi: isolate; }
.ltr { direction: ltr; unicode-bidi: isolate; display: inline-block; }
body.has-bulk .toasts { bottom: 84px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- layout ---------- */
.app { display: flex; flex-direction: column; height: 100%; }
.topbar {
  height: var(--topbar-h); display: flex; align-items: center; gap: 8px; padding: 0 12px; flex: none;
  background: var(--bg); position: relative; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; padding-inline-end: 6px; user-select: none; }
.brand .logo { width: 28px; height: 28px; border-radius: 8px; }
.body { display: flex; flex: 1; min-height: 0; }
.sidebar {
  width: var(--sidebar-w); flex: none; display: flex; flex-direction: column; padding: 4px 8px 8px;
  overflow: hidden auto; transition: width .2s var(--ease), padding .2s var(--ease); scrollbar-gutter: stable;
}
.app.sidebar-collapsed .sidebar { width: 0; padding: 0; overflow: hidden; }
.main {
  flex: 1; min-width: 0; display: flex; flex-direction: column; background: var(--surface);
  border: 1px solid var(--border); border-bottom: none; border-start-start-radius: var(--radius-lg); border-start-end-radius: var(--radius-lg); overflow: hidden; position: relative;
}
.details {
  width: var(--details-w); flex: none; background: var(--surface); margin-inline-start: 8px; border: 1px solid var(--border); border-bottom: none;
  border-start-start-radius: var(--radius-lg); border-start-end-radius: var(--radius-lg); overflow: auto; display: flex; flex-direction: column;
}
.app.details-collapsed .details { display: none; }

/* ---------- controls ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 34px; padding: 0 14px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border-strong); color: var(--text); font-weight: 500; white-space: nowrap; user-select: none;
  transition: background .12s, border-color .12s, transform .06s;
}
.btn:hover:not(:disabled) { background: var(--surface-hover); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: transparent; color: var(--accent-text); }
.btn.primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.danger:hover:not(:disabled) { background: var(--danger-soft); }
.btn.danger.solid { background: var(--danger); color: #fff; border-color: transparent; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover:not(:disabled) { background: var(--surface-hover); }
.btn.sm { height: 30px; padding: 0 10px; font-size: 13px; }
.btn.lg { height: 40px; padding: 0 20px; font-size: 15px; }
.btn.block { width: 100%; }
.icon-btn {
  width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; border-radius: var(--radius); color: var(--text-2);
  transition: background .12s, color .12s; position: relative; flex: none;
}
.icon-btn:hover:not(:disabled) { background: var(--surface-hover); color: var(--text); }
.icon-btn.active { background: var(--accent-soft); color: var(--accent); }
.icon-btn.sm { width: 30px; height: 30px; }
.icon-btn .badge { position: absolute; top: 4px; inset-inline-end: 4px; min-width: 8px; height: 8px; border-radius: 8px; background: var(--danger); }
.icon-btn .badge.ok { background: var(--success); }
.icon-btn .badge.warn { background: var(--warn); }
.icon-btn .badge.busy { background: var(--accent); animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }
.spin { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.input, .select, .textarea {
  width: 100%; height: 34px; padding: 0 10px; border-radius: var(--radius); border: 1px solid var(--border-strong); background: var(--surface);
  color: var(--text); transition: border-color .12s, box-shadow .12s;
}
.textarea { height: auto; min-height: 80px; padding: 8px 10px; resize: vertical; line-height: 1.5; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.select { appearance: none; padding-inline-end: 30px; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='m6 9 6 6 6-6'/></svg>"); background-repeat: no-repeat; background-position: right 8px center; }
[dir="rtl"] .select { background-position: left 8px center; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label, .field .label { font-size: 13px; font-weight: 600; color: var(--text-2); }
.field .hint { font-size: 12px; color: var(--text-3); }
.field .seg, .field .accent-row { align-self: flex-start; }
.row { display: flex; align-items: center; gap: 8px; }
.row.between { justify-content: space-between; }
.row.wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.muted { color: var(--text-3); }
.small { font-size: 12px; }
.ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kbd { font-family: var(--mono); font-size: 11px; padding: 1px 6px; border: 1px solid var(--border-strong); border-bottom-width: 2px; border-radius: 5px; background: var(--surface-2); color: var(--text-2); }
.switch { position: relative; width: 40px; height: 20px; border-radius: 20px; background: var(--border-strong); transition: background .15s; flex: none; }
.switch::after { content: ""; position: absolute; top: 3px; inset-inline-start: 3px; width: 14px; height: 14px; border-radius: 50%; background: #fff; transition: transform .15s var(--ease); box-shadow: 0 1px 2px rgba(0,0,0,.3); }
.switch.on { background: var(--accent); }
.switch.on::after { transform: translateX(20px); }
[dir="rtl"] .switch.on::after { transform: translateX(-20px); }
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); cursor: pointer; }
.switch-row:last-child { border-bottom: none; }
.switch-row .t { font-weight: 500; }
.switch-row .d { font-size: 12px; color: var(--text-3); margin-top: 2px; }
.seg { display: inline-flex; background: var(--surface-3); border-radius: var(--radius); padding: 3px; gap: 2px; }
.seg button { height: 28px; padding: 0 12px; border-radius: 6px; color: var(--text-2); font-weight: 500; display: inline-flex; align-items: center; gap: 6px; }
.seg button.on { background: var(--surface); color: var(--text); box-shadow: var(--shadow-1); }
.chip { display: inline-flex; align-items: center; gap: 4px; height: 24px; padding: 0 8px; border-radius: 20px; background: var(--surface-3); font-size: 12px; color: var(--text-2); white-space: nowrap; max-width: 100%; }
.chip.accent { background: var(--accent-soft); color: var(--accent); }
.chip .x { width: 16px; height: 16px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; margin-inline-end: -4px; }
.chip .x:hover { background: var(--surface-active); }
.chip.clickable { cursor: pointer; }
.chip.clickable:hover { background: var(--surface-active); }
.divider { height: 1px; background: var(--border); margin: 12px 0; }
.card-box { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; overflow: hidden; flex: none; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar.lg { width: 48px; height: 48px; font-size: 18px; }
.progress { height: 6px; border-radius: 6px; background: var(--surface-3); overflow: hidden; }
.progress > div { height: 100%; background: var(--accent); border-radius: 6px; transition: width .2s; }
.progress.indet > div { width: 40% !important; animation: indet 1.2s infinite var(--ease); }
@keyframes indet { 0% { transform: translateX(-120%); } 100% { transform: translateX(300%); } }
[dir="rtl"] .progress.indet > div { animation-name: indet-rtl; }
@keyframes indet-rtl { 0% { transform: translateX(120%); } 100% { transform: translateX(-300%); } }

/* ---------- top bar search ---------- */
.searchbox { flex: 1; max-width: 640px; height: 36px; display: flex; align-items: center; gap: 8px; padding: 0 10px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); margin: 0 auto; transition: box-shadow .12s, border-color .12s; }
.searchbox:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.searchbox input { flex: 1; min-width: 0; border: none; background: none; outline: none; height: 100%; }
.searchbox input::-webkit-search-cancel-button, .searchbox input::-webkit-search-decoration { -webkit-appearance: none; display: none; }
.searchbox .ic { color: var(--text-3); }
.searchbox .clear { width: 24px; height: 24px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: var(--text-3); }
.searchbox .clear:hover { background: var(--surface-hover); color: var(--text); }
.topbar-actions { display: flex; align-items: center; gap: 4px; }
.topbar .btn.primary { margin-inline-end: 6px; }
@media (max-width: 900px) { .topbar .btn.primary span { display: none; } .topbar .btn.primary { padding: 0 10px; } .brand span { display: none; } }

/* ---------- sidebar ---------- */
.nav-section { margin-top: 6px; }
.nav-title { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px 4px; font-size: 12px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; }
.nav-title .icon-btn { width: 24px; height: 24px; border-radius: 6px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; height: 34px; padding: 0 10px; border-radius: var(--radius); color: var(--text); cursor: pointer; user-select: none;
  position: relative; width: 100%; text-align: start;
}
.nav-item:hover { background: var(--surface-hover); }
.nav-item.active { background: var(--surface); box-shadow: var(--shadow-1); font-weight: 600; }
.nav-item.active::before { content: ""; position: absolute; inset-inline-start: 0; top: 9px; bottom: 9px; width: 3px; border-radius: 3px; background: var(--accent); }
.nav-item .ic { color: var(--text-2); }
.nav-item.active .ic { color: var(--accent); }
.nav-item .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item .count { font-size: 11px; color: var(--text-3); font-variant-numeric: tabular-nums; }
.nav-item .dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.nav-item.drop-target { outline: 2px dashed var(--accent); outline-offset: -2px; background: var(--accent-soft); }
.tree-item { display: flex; align-items: center; gap: 4px; height: 32px; padding-inline-end: 6px; border-radius: var(--radius); cursor: pointer; user-select: none; position: relative; width: 100%; text-align: start; }
.tree-item:hover { background: var(--surface-hover); }
.tree-item.active { background: var(--surface); box-shadow: var(--shadow-1); font-weight: 600; }
.tree-item.active::before { content: ""; position: absolute; inset-inline-start: 0; top: 8px; bottom: 8px; width: 3px; border-radius: 3px; background: var(--accent); }
.tree-item .twisty { width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; border-radius: 6px; color: var(--text-3); flex: none; }
.tree-item .twisty:hover { background: var(--surface-active); color: var(--text); }
.tree-item .twisty.open .ic { transform: rotate(90deg); }
[dir="rtl"] .tree-item .twisty .ic { transform: rotate(180deg); }
[dir="rtl"] .tree-item .twisty.open .ic { transform: rotate(90deg); }
.tree-item .twisty.leaf { visibility: hidden; }
.tree-item .fico { width: 22px; height: 18px; flex: none; }
.tree-item .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tree-item .count { font-size: 11px; color: var(--text-3); }
.tree-item.drop-target { outline: 2px dashed var(--accent); outline-offset: -2px; background: var(--accent-soft); }
.tree-children { padding-inline-start: 14px; }
.sidebar-footer { margin-top: auto; padding: 10px 6px 0; }
.trial-badge { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; width: 100%; padding: 8px 10px; margin-bottom: 8px; border-radius: var(--radius); background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 600; text-align: start; }
.trial-badge .row { width: 100%; }
.trial-badge:hover { background: var(--accent-soft-2); }
.trial-badge .link { text-decoration: underline; text-underline-offset: 2px; white-space: nowrap; }
.trial-badge.warn { background: color-mix(in srgb, #d97706 14%, var(--surface)); color: #b45309; }
.trial-badge.warn:hover { background: color-mix(in srgb, #d97706 22%, var(--surface)); }
[data-theme=dark] .trial-badge.warn { color: #fbbf24; }
.protect-status { margin-bottom: 12px; }
.protect-status .strong { font-weight: 600; }
.protect p { margin: 0 0 12px; }
.install-badge { display: flex; align-items: center; gap: 8px; width: 100%; padding: 9px 10px; margin-bottom: 8px; border-radius: var(--radius); background: var(--accent); color: var(--accent-text); font-size: 12.5px; font-weight: 600; text-align: start; box-shadow: 0 1px 2px rgba(0,0,0,.12); }
.install-badge:hover { background: var(--accent-hover); }
.install-badge:disabled { opacity: .6; }
.trial-note { margin-bottom: 12px; }
.storage-meter { font-size: 12px; color: var(--text-3); }
.storage-meter .progress { margin: 6px 0; height: 4px; }
.sidebar .empty-note { font-size: 12px; color: var(--text-3); padding: 4px 12px 8px; }

/* ---------- main toolbar ---------- */
.toolbar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--border); flex: none; min-height: 54px; }
.crumbs { display: flex; align-items: center; gap: 2px; flex: 1; min-width: 0; overflow: hidden; font-size: 15px; }
.crumb { display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 8px; border-radius: 6px; color: var(--text-2); white-space: nowrap; max-width: 220px; }
.crumb:hover { background: var(--surface-hover); color: var(--text); }
.crumb.current { color: var(--text); font-weight: 600; max-width: 70%; }
.crumb-sep { color: var(--text-3); flex: none; }
.crumb-sep .ic { width: 16px; height: 16px; }
.crumb .name { overflow: hidden; text-overflow: ellipsis; }
.crumb.drop-target { background: var(--accent-soft); outline: 2px dashed var(--accent); outline-offset: -2px; }
.toolbar .count-label { font-size: 12px; color: var(--text-3); white-space: nowrap; margin: 0 6px; }

/* ---------- content / cards ---------- */
.content { flex: 1; overflow: auto; position: relative; padding: 14px 16px 40px; scroll-behavior: auto; }
.content.drop-active::after { content: attr(data-drop-label); position: absolute; inset: 8px; border: 2px dashed var(--accent); border-radius: var(--radius-lg); background: var(--accent-soft); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 600; color: var(--accent); pointer-events: none; z-index: 3; }
.section-title { font-size: 12px; font-weight: 600; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; margin: 4px 0 10px; display: flex; align-items: center; gap: 8px; }
.folders-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(196px, 1fr)); gap: 10px; margin-bottom: 20px; }
.folder-card {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface-2);
  cursor: pointer; user-select: none; min-width: 0; transition: background .12s, box-shadow .12s, border-color .12s; position: relative;
}
.folder-card:hover { background: var(--surface-hover); box-shadow: var(--shadow-1); }
.folder-card.selected { border-color: var(--accent); background: var(--accent-soft); }
.folder-card.drop-target { border-color: var(--accent); background: var(--accent-soft); outline: 2px dashed var(--accent); outline-offset: -2px; }
.folder-card .folder-tile { flex: none; }
.folder-card .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.folder-card .meta { font-size: 12px; color: var(--text-3); }
.files-section { position: relative; }
.files-window { position: absolute; top: 0; left: 0; right: 0; display: grid; grid-template-columns: repeat(var(--cols), 1fr); gap: 12px; }
.files-window.list { display: block; }
.file-card {
  height: var(--card-h); border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); overflow: hidden; cursor: default; user-select: none;
  display: flex; flex-direction: column; position: relative; transition: box-shadow .12s, border-color .12s, background .12s;
}
.file-card:hover { box-shadow: var(--shadow-2); border-color: var(--border-strong); }
.file-card.selected { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft-2), var(--shadow-1); background: var(--accent-soft); }
.file-card .thumb { height: var(--thumb-h); background: var(--surface-3); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.file-card .thumb .thumb-inner { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.file-card .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.file-card .thumb.contain img { object-fit: contain; background: #fff; }
.file-card .thumb .big-icon { width: 54px; height: 66px; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; position: relative; box-shadow: var(--shadow-1); }
.file-card .thumb .big-icon .ext { position: absolute; bottom: 6px; font-size: 10px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.file-card .thumb .big-icon .ic { margin-bottom: 14px; }
.file-card .body { padding: 8px 10px 6px; display: flex; flex-direction: column; gap: 3px; min-height: 0; flex: 1; }
.file-card .title { font-weight: 600; font-size: 13px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: break-word; }
.file-card .meta { font-size: 11.5px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: auto; }
.file-card .tags { display: flex; gap: 4px; overflow: hidden; height: 20px; }
.file-card .tags .chip { height: 20px; font-size: 11px; padding: 0 7px; }
.file-card .color-bar { position: absolute; top: 0; inset-inline-start: 0; width: 5px; height: var(--thumb-h); }
.file-card .check { position: absolute; top: 6px; inset-inline-start: 6px; width: 22px; height: 22px; border-radius: 6px; border: 1.5px solid rgba(255,255,255,.9); background: rgba(0,0,0,.35); display: none; align-items: center; justify-content: center; color: #fff; backdrop-filter: blur(4px); }
.file-card:hover .check, .file-card.selected .check, .content.has-selection .file-card .check { display: inline-flex; }
.file-card.selected .check { background: var(--accent); border-color: var(--accent); }
.file-card .star-btn { position: absolute; top: 6px; inset-inline-end: 6px; width: 24px; height: 24px; border-radius: 6px; display: none; align-items: center; justify-content: center; color: #fff; background: rgba(0,0,0,.35); backdrop-filter: blur(4px); }
.file-card:hover .star-btn, .file-card.starred .star-btn { display: inline-flex; }
.file-card.starred .star-btn { color: #f5c518; }
.file-card.starred .star-btn .ic { fill: #f5c518; }
.file-card .cloud-badge { position: absolute; bottom: 6px; inset-inline-end: 6px; width: 22px; height: 22px; border-radius: 6px; background: rgba(0,0,0,.4); color: #fff; display: inline-flex; align-items: center; justify-content: center; backdrop-filter: blur(4px); }
.file-card .cloud-badge .ic { width: 14px; height: 14px; }
.file-card.dragging { opacity: .5; }

/* list rows */
.file-row { height: var(--row-h); display: grid; grid-template-columns: 40px minmax(160px, 2fr) minmax(90px, 1fr) 90px 80px 130px; align-items: center; gap: 10px; padding: 0 10px; border-radius: var(--radius); cursor: default; user-select: none; border: 1px solid transparent; }
.file-row:hover { background: var(--surface-hover); }
.file-row.selected { background: var(--accent-soft); border-color: var(--accent); }
.file-row .thumb { width: 32px; height: 32px; border-radius: 6px; overflow: hidden; background: var(--surface-3); display: flex; align-items: center; justify-content: center; }
.file-row .thumb .thumb-inner { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.file-row .thumb img { width: 100%; height: 100%; object-fit: cover; }
.file-row .thumb.contain img { object-fit: contain; background: #fff; }
.file-row .thumb .mini-icon { width: 22px; height: 26px; border-radius: 4px; color: #fff; display: flex; align-items: center; justify-content: center; }
.file-row .thumb .mini-icon .ic { width: 13px; height: 13px; }
.file-row .title { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: flex; align-items: center; gap: 6px; }
.file-row .title .dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.file-row .c { font-size: 12.5px; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row .tags { display: flex; gap: 4px; overflow: hidden; }
.file-row .tags .chip { height: 20px; font-size: 11px; padding: 0 7px; }
.list-header { display: grid; grid-template-columns: 40px minmax(160px, 2fr) minmax(90px, 1fr) 90px 80px 130px; gap: 10px; padding: 0 10px 6px; font-size: 12px; color: var(--text-3); font-weight: 600; border-bottom: 1px solid var(--border); margin-bottom: 4px; }
@media (max-width: 760px) { .file-row, .list-header { grid-template-columns: 40px minmax(120px, 1fr) 70px; } .file-row .c.type, .file-row .c.date, .file-row .tags, .list-header .type, .list-header .date, .list-header .tags { display: none; } }

.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 60px 20px; color: var(--text-3); gap: 8px; }
.empty-state .ic { width: 56px; height: 56px; color: var(--border-strong); margin-bottom: 8px; }
.empty-state h3 { margin: 0; color: var(--text-2); font-size: 17px; }
.empty-state p { margin: 0; max-width: 380px; }

/* selection bar */
.bulkbar { position: absolute; bottom: 16px; inset-inline: 0; margin: 0 auto; width: fit-content; max-width: calc(100% - 32px); display: flex; align-items: center; gap: 4px; padding: 6px 8px 6px 14px; border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-2); border: 1px solid var(--border); z-index: 4; animation: rise .18s var(--ease); }
.bulkbar .label { font-weight: 600; margin-inline-end: 8px; white-space: nowrap; }
@keyframes rise { from { transform: translateY(10px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- details panel ---------- */
.details-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 14px; border-bottom: 1px solid var(--border); font-weight: 600; }
.details-body { padding: 14px; overflow: auto; flex: 1; }
.details .preview { width: 100%; aspect-ratio: 4/3; border-radius: var(--radius); background: var(--surface-3); display: flex; align-items: center; justify-content: center; overflow: hidden; margin-bottom: 12px; cursor: pointer; position: relative; }
.details .preview img { width: 100%; height: 100%; object-fit: contain; background: #fff; }
.details .preview .big-icon { width: 64px; height: 78px; border-radius: 10px; color: #fff; display: flex; align-items: center; justify-content: center; position: relative; }
.details .preview .big-icon .ext { position: absolute; bottom: 8px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.details .preview .big-icon .ic { margin-bottom: 16px; }
.details .preview .play { position: absolute; width: 44px; height: 44px; border-radius: 50%; background: rgba(0,0,0,.5); color: #fff; display: flex; align-items: center; justify-content: center; }
.details .title-input { font-weight: 600; font-size: 15px; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: 13px; margin: 10px 0; }
.kv dt { color: var(--text-3); white-space: nowrap; }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.tag-editor { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px 8px; border: 1px solid var(--border-strong); border-radius: var(--radius); background: var(--surface); min-height: 38px; cursor: text; }
.tag-editor:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.tag-editor input { flex: 1; min-width: 100px; border: none; background: none; outline: none; height: 24px; }
.tag-suggest { position: absolute; z-index: 20; background: var(--surface); box-shadow: var(--shadow-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 4px; max-height: 180px; overflow: auto; min-width: 180px; }
.tag-suggest button { display: block; width: 100%; text-align: start; padding: 6px 10px; border-radius: 6px; }
.tag-suggest button:hover, .tag-suggest button.hl { background: var(--surface-hover); }
.color-picker { display: flex; flex-wrap: wrap; gap: 8px; }
.color-swatch { width: 26px; height: 26px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; color: #fff; transition: transform .1s; position: relative; }
.color-swatch:hover { transform: scale(1.12); }
.color-swatch.on { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px currentColor; }
.color-swatch.none { background: var(--surface-3); color: var(--text-3); border-color: var(--border-strong); }
.icon-picker { display: grid; grid-template-columns: repeat(auto-fill, minmax(38px, 1fr)); gap: 6px; }
.icon-picker button { height: 38px; border-radius: var(--radius); display: inline-flex; align-items: center; justify-content: center; color: var(--text-2); border: 1px solid var(--border); }
.icon-picker button:hover { background: var(--surface-hover); color: var(--text); }
.icon-picker button.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.sync-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-2); padding: 4px 8px; border-radius: 20px; background: var(--surface-3); }
.sync-pill .ic { width: 14px; height: 14px; }
.sync-pill.ok { color: var(--success); }
.sync-pill.warn { color: var(--warn); }
.sync-pill.err { color: var(--danger); }
.text-preview { font-size: 12px; color: var(--text-2); background: var(--surface-2); border-radius: var(--radius); padding: 8px 10px; max-height: 140px; overflow: auto; white-space: pre-wrap; word-break: break-word; font-family: var(--mono); }
.text-preview mark, .result-snippet mark, .file-card mark, .file-row mark { background: rgba(255,200,0,.45); color: inherit; border-radius: 2px; padding: 0 1px; }
.result-snippet { font-size: 11.5px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- overlays ---------- */
.overlay { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,.35); animation: fade .15s; padding: 20px; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.dialog { background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-3); width: 100%; max-width: 520px; max-height: calc(100vh - 40px); display: flex; flex-direction: column; animation: pop .18s var(--ease); border: 1px solid var(--border); }
.dialog.md { max-width: 680px; }
.dialog.lg { max-width: 900px; }
.dialog.xl { max-width: 1100px; }
@keyframes pop { from { transform: translateY(12px) scale(.98); opacity: 0; } to { transform: none; opacity: 1; } }
.dialog-head { display: flex; align-items: center; gap: 10px; padding: 16px 20px 8px; font-size: 18px; font-weight: 600; }
.dialog-head .icon-btn { margin-inline-start: auto; }
.dialog-body { padding: 8px 20px 16px; overflow: auto; flex: 1; }
.dialog-foot { display: flex; align-items: center; justify-content: flex-end; gap: 8px; padding: 12px 20px 16px; border-top: 1px solid var(--border); }
.dialog-foot .start { margin-inline-end: auto; }
@media (max-width: 600px) { .overlay { padding: 0; align-items: flex-end; } .dialog { max-height: 96vh; border-radius: var(--radius-lg) var(--radius-lg) 0 0; max-width: none; } }

.menu { position: fixed; z-index: 200; min-width: 200px; max-width: 320px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-2); padding: 4px; animation: pop .12s var(--ease); max-height: calc(100vh - 20px); overflow: auto; }
.menu-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border-radius: 6px; text-align: start; color: var(--text); }
.menu-item:hover:not(:disabled) { background: var(--surface-hover); }
.menu-item .ic { color: var(--text-2); }
.menu-item.danger, .menu-item.danger .ic { color: var(--danger); }
.menu-item .grow { flex: 1; }
.menu-item .kbd { margin-inline-start: auto; }
.menu-sep { height: 1px; background: var(--border); margin: 4px 6px; }
.menu-label { font-size: 11px; font-weight: 600; color: var(--text-3); padding: 6px 10px 2px; text-transform: uppercase; }
.menu .color-picker { padding: 6px 10px; }

.toasts { position: fixed; bottom: 20px; inset-inline-start: 50%; transform: translateX(-50%); z-index: 300; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
[dir="rtl"] .toasts { transform: translateX(50%); }
.toast { pointer-events: auto; display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: 10px; background: #2b2b2b; color: #fff; box-shadow: var(--shadow-2); animation: rise .18s var(--ease); max-width: 90vw; font-size: 13.5px; }
:root[data-theme="dark"] .toast { background: #f2f2f2; color: #1b1b1b; }
.toast.error { background: var(--danger); color: #fff; }
.toast.success .ic { color: #6ccb5f; }
.toast button { color: inherit; font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.toast .x { text-decoration: none; opacity: .7; }

/* command palette */
.palette { width: 100%; max-width: 640px; background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-3); border: 1px solid var(--border); overflow: hidden; animation: pop .15s var(--ease); align-self: flex-start; margin-top: 8vh; }
.palette .searchbox { margin: 10px; height: 44px; font-size: 15px; }
.palette-list { max-height: 60vh; overflow: auto; padding: 0 8px 8px; }
.palette-group { font-size: 11px; font-weight: 600; color: var(--text-3); text-transform: uppercase; padding: 8px 10px 4px; }
.palette-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 8px 10px; border-radius: 8px; text-align: start; }
.palette-item:hover, .palette-item.hl { background: var(--surface-hover); }
.palette-item .ic { color: var(--text-2); }
.palette-item .sub { font-size: 12px; color: var(--text-3); }
.palette-item .thumbmini { width: 30px; height: 30px; border-radius: 6px; object-fit: cover; background: var(--surface-3); flex: none; }

/* drop overlay */
.drop-overlay { position: fixed; inset: 0; z-index: 90; background: var(--accent-soft-2); backdrop-filter: blur(2px); display: flex; align-items: center; justify-content: center; pointer-events: none; }
.drop-overlay .box { background: var(--surface); border: 2px dashed var(--accent); border-radius: 20px; padding: 40px 60px; font-size: 20px; font-weight: 600; color: var(--accent); display: flex; flex-direction: column; align-items: center; gap: 10px; }

/* ---------- import dialog ---------- */
.dropzone { border: 2px dashed var(--border-strong); border-radius: var(--radius-lg); padding: 28px 16px; text-align: center; color: var(--text-2); cursor: pointer; transition: background .12s, border-color .12s; }
.dropzone:hover, .dropzone.over { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.dropzone .ic { width: 36px; height: 36px; margin-bottom: 6px; }
.import-list { display: flex; flex-direction: column; gap: 6px; max-height: 40vh; overflow: auto; padding: 2px; }
.import-item { display: grid; grid-template-columns: 40px 1fr auto; gap: 10px; align-items: center; padding: 6px 8px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-2); }
.import-item .ithumb { width: 40px; height: 40px; border-radius: 6px; background: var(--surface-3); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.import-item .ithumb img { width: 100%; height: 100%; object-fit: cover; }
.import-item .ithumb .mini-icon { width: 22px; height: 26px; border-radius: 4px; color: #fff; display: flex; align-items: center; justify-content: center; }
.import-item .ithumb .mini-icon .ic { width: 13px; height: 13px; }
.import-item .orig { font-size: 11.5px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.import-item .input { height: 30px; }
.import-item .dup { color: var(--warn); font-size: 11px; }
.template-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }

/* ---------- settings ---------- */
.settings-layout { display: grid; grid-template-columns: 180px 1fr; gap: 16px; min-height: 420px; }
.settings-nav { display: flex; flex-direction: column; gap: 2px; }
.settings-nav button { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius); text-align: start; color: var(--text-2); }
.settings-nav button:hover { background: var(--surface-hover); }
.settings-nav button.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.settings-pane h3 { margin: 4px 0 12px; font-size: 16px; }
.settings-pane h4 { margin: 18px 0 8px; font-size: 13px; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; }
.accent-row { display: flex; gap: 10px; }
.accent-dot { width: 30px; height: 30px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; }
.accent-dot.on { box-shadow: 0 0 0 2px var(--surface), 0 0 0 4px var(--text-2); }
.account-card { display: flex; align-items: center; gap: 12px; }
.shortcut-list { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; font-size: 13px; align-items: center; }
@media (max-width: 640px) { .settings-layout { grid-template-columns: 1fr; } .settings-nav { flex-direction: row; overflow: auto; } }

/* ---------- welcome ---------- */
.welcome { max-width: 560px; text-align: center; padding: 8px 8px 0; }
.welcome .logo-big { width: 84px; height: 84px; border-radius: 22px; margin: 0 auto 16px; box-shadow: var(--shadow-2); }
.welcome h1 { font-size: 26px; margin: 0 0 8px; }
.welcome p { color: var(--text-2); margin: 0 auto 18px; max-width: 460px; }
.welcome .features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 18px 0; text-align: start; }
.welcome .features div { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: var(--surface-2); border-radius: var(--radius); font-weight: 500; }
.welcome .features .ic { color: var(--accent); }
.lang-switch { display: inline-flex; gap: 8px; margin-bottom: 8px; }

/* ---------- viewer ---------- */
.viewer { position: fixed; inset: 0; z-index: 150; background: #111; color: #eee; display: flex; flex-direction: column; animation: fade .15s; }
.viewer-top { height: 52px; display: flex; align-items: center; gap: 6px; padding: 0 10px; background: rgba(0,0,0,.55); backdrop-filter: blur(8px); flex: none; z-index: 2; }
.viewer-top .icon-btn { color: #ddd; }
.viewer-top .icon-btn:hover { background: rgba(255,255,255,.12); color: #fff; }
.viewer-top .icon-btn.active { background: rgba(255,255,255,.18); color: #fff; }
.viewer-top .vtitle { flex: 1; min-width: 0; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin: 0 6px; }
.viewer-top .vmeta { font-size: 12px; color: #aaa; white-space: nowrap; }
.viewer-top .zoom-label { font-size: 12px; min-width: 44px; text-align: center; color: #ccc; font-variant-numeric: tabular-nums; }
.viewer-body { flex: 1; min-height: 0; display: flex; position: relative; }
.viewer-stage { flex: 1; min-width: 0; position: relative; overflow: auto; display: flex; align-items: center; justify-content: center; }
.viewer-stage.top { align-items: flex-start; }
.viewer-side { width: 320px; flex: none; background: var(--surface); color: var(--text); overflow: auto; border-inline-start: 1px solid var(--border); }
.viewer-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 64px; border-radius: 10px; background: rgba(0,0,0,.45); color: #fff; display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity .15s; z-index: 2; }
.viewer-nav.prev { inset-inline-start: 12px; }
.viewer-nav.next { inset-inline-end: 12px; }
.viewer-body:hover .viewer-nav { opacity: .8; }
.viewer-nav:hover { opacity: 1 !important; background: rgba(0,0,0,.7); }
.viewer-nav:disabled { opacity: 0 !important; }
.viewer-loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; color: #bbb; }
.viewer-msg { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; color: #ccc; padding: 30px; max-width: 460px; }
.viewer-msg .big-icon { width: 80px; height: 98px; border-radius: 12px; color: #fff; display: flex; align-items: center; justify-content: center; position: relative; margin-bottom: 8px; }
.viewer-msg .big-icon .ext { position: absolute; bottom: 10px; font-size: 12px; font-weight: 700; text-transform: uppercase; }
.viewer-msg .big-icon .ic { margin-bottom: 18px; width: 34px; height: 34px; }
.viewer-msg h3 { margin: 0; color: #fff; }
.viewer-msg .btn { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.25); color: #fff; }
.viewer-msg .btn.primary { background: var(--accent); border-color: transparent; }
.img-stage { width: 100%; height: 100%; overflow: hidden; display: flex; align-items: center; justify-content: center; cursor: grab; touch-action: none; }
.img-stage.grabbing { cursor: grabbing; }
.img-stage img { max-width: none; transform-origin: center center; user-select: none; -webkit-user-drag: none; transition: transform .08s ease-out; image-orientation: from-image; }
.img-stage.no-anim img { transition: none; }
.pdf-pages { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 16px; width: 100%; }
.pdf-page { position: relative; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.5); }
.pdf-page canvas { display: block; }
.pdf-page .textLayer { position: absolute; inset: 0; overflow: hidden; line-height: 1; opacity: .25; }
.pdf-page .textLayer span { position: absolute; color: transparent; white-space: pre; transform-origin: 0 0; cursor: text; }
.pdf-page .textLayer ::selection { background: rgba(0,120,255,.9); }
.pdf-frame { width: 100%; height: 100%; border: none; background: #444; }
.media-stage { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; padding: 20px; }
.media-stage video { max-width: 100%; max-height: 100%; outline: none; border-radius: 8px; background: #000; }
.media-stage .audio-box { display: flex; flex-direction: column; align-items: center; gap: 18px; padding: 40px; background: rgba(255,255,255,.05); border-radius: 20px; min-width: min(480px, 90vw); }
.media-stage .audio-box .ic { width: 64px; height: 64px; color: #12a594; }
.media-stage audio { width: 100%; }
.doc-stage { width: 100%; height: 100%; overflow: auto; padding: 24px; }
.doc-paper { background: #fff; color: #111; max-width: 860px; margin: 0 auto; padding: 56px 64px; border-radius: 4px; box-shadow: 0 4px 24px rgba(0,0,0,.4); font-family: "Times New Roman", "Segoe UI", serif; font-size: 15px; line-height: 1.55; }
.doc-paper p { margin: 0 0 8px; }
.doc-paper h1, .doc-paper h2, .doc-paper h3, .doc-paper h4 { margin: 18px 0 8px; line-height: 1.25; }
.doc-paper table { border-collapse: collapse; margin: 10px 0; max-width: 100%; }
.doc-paper td { border: 1px solid #999; padding: 4px 8px; vertical-align: top; }
.doc-paper img { max-width: 100%; height: auto; }
.doc-paper .tab { display: inline-block; width: 36px; }
.doc-paper hr.pagebreak { border: none; border-top: 1px dashed #bbb; margin: 24px -64px; }
.doc-paper ul, .doc-paper ol { margin: 4px 0 8px; padding-inline-start: 28px; }
.doc-paper .doc-title { font-size: 26px; font-weight: 700; margin-bottom: 4px; }
.doc-paper .doc-subtitle { color: #555; font-size: 17px; }
@media (max-width: 700px) { .doc-paper { padding: 24px 20px; } .doc-paper hr.pagebreak { margin: 20px -20px; } }
.text-stage { width: 100%; height: 100%; overflow: auto; padding: 20px; }
.text-stage pre { margin: 0 auto; max-width: 1100px; font-family: var(--mono); font-size: 13px; line-height: 1.55; white-space: pre-wrap; word-break: break-word; background: #1e1e1e; color: #d4d4d4; padding: 20px 24px; border-radius: 10px; tab-size: 4; }
.text-stage pre code.hljs { background: transparent; padding: 0; display: block; }
.text-stage .md-paper { background: var(--surface); color: var(--text); max-width: 860px; margin: 0 auto; padding: 32px 40px; border-radius: 10px; line-height: 1.6; }
.md-paper pre { background: #1e1e1e; color: #d4d4d4; padding: 12px 14px; border-radius: 8px; overflow: auto; }
.md-paper code { font-family: var(--mono); font-size: 13px; }
.md-paper :not(pre) > code { background: var(--surface-3); padding: 1px 5px; border-radius: 4px; }
.md-paper img { max-width: 100%; }
.md-paper table { border-collapse: collapse; }
.md-paper td, .md-paper th { border: 1px solid var(--border-strong); padding: 4px 10px; }
.md-paper blockquote { border-inline-start: 3px solid var(--accent); margin: 0; padding: 4px 14px; color: var(--text-2); }
.sheet-stage { width: 100%; height: 100%; display: flex; flex-direction: column; background: var(--surface); color: var(--text); }
.sheet-tabs { display: flex; gap: 2px; padding: 6px 10px 0; border-bottom: 1px solid var(--border); overflow-x: auto; flex: none; background: var(--surface-2); }
.sheet-tabs button { padding: 6px 14px; border-radius: 6px 6px 0 0; color: var(--text-2); white-space: nowrap; font-weight: 500; }
.sheet-tabs button.on { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-bottom-color: var(--surface); margin-bottom: -1px; }
.sheet-scroll { flex: 1; overflow: auto; }
.sheet-scroll table { border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; }
.sheet-scroll th { position: sticky; top: 0; background: var(--surface-3); color: var(--text-3); font-weight: 600; font-size: 11px; padding: 4px 8px; border: 1px solid var(--border); z-index: 1; }
.sheet-scroll th.rn { position: sticky; inset-inline-start: 0; z-index: 2; min-width: 40px; text-align: center; }
.sheet-scroll td { border: 1px solid var(--border); padding: 3px 8px; white-space: nowrap; max-width: 320px; overflow: hidden; text-overflow: ellipsis; }
.sheet-scroll td.num { text-align: end; }
.sheet-scroll .note { padding: 6px 10px; font-size: 12px; color: var(--text-3); }
.slides-stage { width: 100%; height: 100%; overflow: auto; padding: 24px; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.slide { width: min(960px, 100%); aspect-ratio: var(--ratio, 16/9); background: #fff; color: #222; border-radius: 6px; box-shadow: 0 4px 24px rgba(0,0,0,.45); padding: 4% 5%; overflow: hidden; position: relative; display: flex; flex-direction: column; gap: 10px; }
.slide .snum { position: absolute; bottom: 8px; inset-inline-end: 12px; font-size: 11px; color: #999; }
.slide h2 { margin: 0 0 6px; font-size: clamp(16px, 3vw, 30px); line-height: 1.2; }
.slide .sub { color: #666; font-size: clamp(12px, 1.8vw, 18px); }
.slide ul { margin: 0; padding-inline-start: 22px; font-size: clamp(11px, 1.6vw, 17px); }
.slide .imgs { display: flex; gap: 10px; flex-wrap: wrap; }
.slide .imgs img { max-height: 200px; max-width: 45%; object-fit: contain; }
.slide table { border-collapse: collapse; font-size: clamp(10px, 1.4vw, 14px); }
.slide td { border: 1px solid #bbb; padding: 3px 8px; }
.archive-stage { width: 100%; height: 100%; overflow: auto; padding: 20px; }
.archive-list { max-width: 900px; margin: 0 auto; background: var(--surface); color: var(--text); border-radius: 10px; overflow: hidden; }
.archive-list .arow { display: grid; grid-template-columns: 28px 1fr 90px 140px; gap: 10px; align-items: center; padding: 7px 14px; border-bottom: 1px solid var(--border); font-size: 13px; }
.archive-list .arow .ic { color: var(--text-3); }
.archive-list .arow .sz { text-align: end; color: var(--text-2); font-variant-numeric: tabular-nums; }
.archive-list .arow .dt { color: var(--text-3); font-size: 12px; }
.archive-list .ahead { padding: 12px 14px; font-weight: 600; background: var(--surface-2); border-bottom: 1px solid var(--border); }
.viewer-find { position: absolute; top: 8px; inset-inline-end: 12px; z-index: 3; display: flex; gap: 4px; align-items: center; background: rgba(30,30,30,.92); padding: 6px; border-radius: 8px; box-shadow: var(--shadow-2); }
.viewer-find input { height: 30px; border-radius: 6px; border: 1px solid #555; background: #222; color: #fff; padding: 0 8px; width: 200px; }
.viewer-find .cnt { font-size: 12px; color: #bbb; min-width: 40px; text-align: center; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) { .app:not(.details-collapsed) .details { position: absolute; inset-inline-end: 0; top: var(--topbar-h); bottom: 0; z-index: 6; box-shadow: var(--shadow-3); border-radius: 0; margin: 0; } }
@media (max-width: 760px) {
  .sidebar { position: absolute; top: var(--topbar-h); bottom: 0; inset-inline-start: 0; z-index: 7; background: var(--bg); width: min(300px, 86vw); box-shadow: var(--shadow-3); border-inline-end: 1px solid var(--border); }
  .app.sidebar-collapsed .sidebar { transform: translateX(-100%); width: min(300px, 86vw); padding: 4px 8px 8px; box-shadow: none; }
  [dir="rtl"] .app.sidebar-collapsed .sidebar { transform: translateX(100%); }
  .sidebar { transition: transform .2s var(--ease); }
  .main { border-radius: 0; border: none; }
  .details { width: 100%; }
  .content { padding: 10px 10px 90px; }
  .viewer-side { position: absolute; inset-inline-end: 0; top: 0; bottom: 0; z-index: 3; width: min(320px, 90vw); box-shadow: var(--shadow-3); }
  .toolbar { padding: 8px 10px; }
  .bulkbar { bottom: 12px; }
  .searchbox { max-width: none; min-width: 0; }
  .topbar { padding: 0 8px; gap: 4px; }
  .topbar .sync-btn { display: none; }
  .topbar .btn.primary { margin-inline-end: 0; }
}
.scrim { position: fixed; inset: 0; z-index: 6; background: rgba(0,0,0,.25); }
@media (min-width: 761px) { .scrim { display: none; } }

@media (max-width: 640px) { .viewer-top .vmeta, .viewer-top .zoom-label, .viewer-top .v-fit, .viewer-top .v-full, .viewer-top .v-dl { display: none !important; } .viewer-top { padding: 0 4px; gap: 0; } .viewer-nav { width: 34px; height: 52px; } }
/* print */
@media print { .topbar, .sidebar, .details, .toolbar, .bulkbar { display: none !important; } }

/* ---------- installed app without a title bar (Window Controls Overlay) ----------
   Edge draws the minimize / maximize / close buttons (and its app menu) on top of the page.
   env(titlebar-area-*) is the free part of the title bar: keep the top bar's content inside it
   (physical left/right, because the buttons' side depends on Windows, not on the app language)
   and let the empty parts of the top bar move the window like a normal title bar. */
@media (display-mode: window-controls-overlay) {
  .topbar {
    padding-left: max(12px, calc(env(titlebar-area-x, 0px) + 8px));
    padding-right: max(12px, calc(100vw - env(titlebar-area-x, 0px) - env(titlebar-area-width, 100vw) + 8px));
    -webkit-app-region: drag; app-region: drag;
  }
  .topbar button, .topbar input, .topbar a, .topbar select, .topbar .searchbox, .topbar [role="button"] { -webkit-app-region: no-drag; app-region: no-drag; }
}

/* ============================================================
   2.2 – visual refresh (layered on top of the styles above)
   ============================================================ */
:root { --radius: 10px; --radius-lg: 16px; --shadow-1: 0 1px 2px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.04); --shadow-2: 0 10px 28px rgba(0,0,0,.12), 0 2px 6px rgba(0,0,0,.06); }
:root[data-theme="dark"] { --shadow-2: 0 12px 32px rgba(0,0,0,.5), 0 2px 8px rgba(0,0,0,.35); }

/* frame: a faint accent wash behind the top bar and sidebar, like Windows 11's Mica */
.app { background: radial-gradient(1100px 560px at 0% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%), var(--bg); }
[dir="rtl"] .app { background: radial-gradient(1100px 560px at 100% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 70%), var(--bg); }
.topbar { background: transparent; }
.brand > span:last-child { font-size: 16px; letter-spacing: -.01em; }
.brand .logo { box-shadow: 0 2px 6px rgba(0,0,0,.18); }
.searchbox { border-radius: 18px; padding: 0 12px; }
.main, .details { box-shadow: var(--shadow-1); }

/* sidebar */
.nav-item .count, .tree-item .count { min-width: 20px; height: 18px; padding: 0 6px; border-radius: 9px; background: var(--surface-active); color: var(--text-2); display: inline-flex; align-items: center; justify-content: center; font-size: 11px; font-variant-numeric: tabular-nums; }
.nav-item.active .count, .tree-item.active .count { background: var(--accent-soft); color: var(--accent); }
.nav-title { letter-spacing: .06em; }

/* toolbar */
.toolbar .count-label { padding: 3px 8px; border-radius: 12px; background: var(--surface-3); }

/* folder cards: a whisper of the folder's colour, lift on hover */
.folder-card { padding: 12px 14px; border-radius: 12px; background: var(--surface); transition: background .15s, box-shadow .15s, border-color .15s, transform .15s var(--ease); }
.folder-card::before { content: ""; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(90deg, color-mix(in srgb, var(--fc, transparent) 11%, transparent), transparent 58%); pointer-events: none; }
[dir="rtl"] .folder-card::before { background: linear-gradient(270deg, color-mix(in srgb, var(--fc, transparent) 11%, transparent), transparent 58%); }
.folder-card > * { position: relative; }
.folder-card:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); background: var(--surface); border-color: color-mix(in srgb, var(--fc, var(--border-strong)) 40%, var(--border)); }
.folder-card.selected { background: var(--accent-soft); }
.folder-card .name { font-size: 14px; }
.folder-card .meta { margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.print-frame { position: fixed; right: 0; bottom: 0; width: 0; height: 0; border: 0; opacity: 0; pointer-events: none; }

/* file cards */
.file-card { border-radius: 12px; transition: box-shadow .15s, border-color .15s, background .15s, transform .15s var(--ease); }
.file-card:hover { transform: translateY(-2px); }
.file-card .thumb { background: linear-gradient(180deg, var(--surface-3), var(--surface-2)); }
.file-card .thumb .big-icon { width: 58px; height: 70px; border-radius: 10px; box-shadow: 0 6px 14px rgba(0,0,0,.18), inset 0 1px 0 rgba(255,255,255,.25); }
.file-card .body { padding: 9px 12px 8px; }
.file-card .title { font-size: 13.5px; }
.file-card .expiry-row { display: flex; height: 20px; overflow: hidden; }
.file-row { border-radius: 8px; }

/* expiry chips */
.chip.expiry { height: 20px; font-size: 11px; padding: 0 7px; gap: 4px; font-weight: 600; background: var(--accent-soft); color: var(--accent); }
.chip.expiry.soon { background: rgba(217,119,6,.14); color: #b45309; }
.chip.expiry.today, .chip.expiry.expired { background: var(--danger-soft); color: var(--danger); }
:root[data-theme="dark"] .chip.expiry.soon { color: #fbbf24; }
:root[data-theme="dark"] .chip.expiry.today, :root[data-theme="dark"] .chip.expiry.expired { color: #ff8a8e; }
.file-row .title .chip.expiry { flex: none; }
.details .chip.expiry { height: 24px; font-size: 12px; }
.details input[type="date"].input { flex: 1; min-width: 0; }

/* empty states */
.empty-state .ic { width: 76px; height: 76px; padding: 20px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); margin-bottom: 12px; }
.empty-state h3 { font-size: 18px; color: var(--text); }

/* details */
.details .preview { background: linear-gradient(180deg, var(--surface-3), var(--surface-2)); border-radius: 12px; }
.details .preview .big-icon { box-shadow: 0 8px 18px rgba(0,0,0,.18); }

/* dialogs, menus, toasts, buttons */
.dialog { border-radius: 16px; }
.menu { border-radius: 10px; }
.toast { border-radius: 12px; }
.btn.primary { box-shadow: 0 1px 2px rgba(0,0,0,.14), inset 0 1px 0 rgba(255,255,255,.12); }
.btn.primary:active:not(:disabled) { box-shadow: none; }

@media (prefers-reduced-motion: reduce) { .folder-card:hover, .file-card:hover { transform: none; } .dialog, .menu, .toast, .overlay { animation: none; } }