/* LaoDrive — Main Stylesheet */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --sidebar-w: 230px;
  --topbar-h: 56px;
  --color-bg: #f7f7f5;
  --color-surface: #ffffff;
  --color-border: #e4e4e0;
  --color-border-md: #d0d0cc;
  --color-text: #1a1a18;
  --color-text-muted: #6b6b68;
  --color-text-faint: #a0a09d;
  --color-primary: #378ADD;
  --color-primary-bg: #e6f1fb;
  --color-success: #1D9E75;
  --color-success-bg: #e1f5ee;
  --color-danger: #E24B4A;
  --color-danger-bg: #fcebeb;
  --color-warning: #EF9F27;
  --color-warning-bg: #faeeda;
  --color-info-bg: #e6f1fb;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
}

body { font-family: 'Noto Sans Lao', 'Inter', sans-serif; background: var(--color-bg); color: var(--color-text); font-size: 14px; line-height: 1.6; }

/* ── Layout ── */
#app-wrap { display: flex; min-height: 100vh; }
#sidebar { width: var(--sidebar-w); background: var(--color-surface); border-right: 0.5px solid var(--color-border); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; height: 100vh; z-index: 100; transition: transform .25s; }
#main-area { margin-left: var(--sidebar-w); flex: 1; display: flex; flex-direction: column; min-width: 0; }
#page-content { flex: 1; padding: 24px; }

/* ── Sidebar ── */
.sidebar-logo { padding: 16px; display: flex; align-items: center; gap: 10px; border-bottom: 0.5px solid var(--color-border); }
.logo-icon { width: 32px; height: 32px; background: var(--color-primary-bg); color: var(--color-primary); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 17px; flex-shrink: 0; }
.logo-name { font-size: 15px; font-weight: 600; color: var(--color-text); }
.logo-sub { font-size: 11px; color: var(--color-text-faint); }
.sidebar-nav { padding: 10px 8px; flex: 1; overflow-y: auto; }
.nav-section { font-size: 10px; color: var(--color-text-faint); padding: 10px 10px 4px; letter-spacing: .06em; text-transform: uppercase; }
.nav-item { display: flex; align-items: center; gap: 9px; padding: 8px 12px; border-radius: var(--radius); color: var(--color-text-muted); text-decoration: none; font-size: 13px; margin-bottom: 2px; transition: background .15s, color .15s; position: relative; }
.nav-item:hover { background: var(--color-bg); color: var(--color-text); }
.nav-item.active { background: var(--color-primary-bg); color: var(--color-primary); font-weight: 500; }
.nav-item i { font-size: 16px; flex-shrink: 0; }
.badge-count { margin-left: auto; background: var(--color-danger); color: #fff; font-size: 10px; font-weight: 600; padding: 1px 6px; border-radius: 99px; }

.sidebar-storage { padding: 14px; border-top: 0.5px solid var(--color-border); }
.storage-label { display: flex; justify-content: space-between; font-size: 11px; color: var(--color-text-muted); margin-bottom: 6px; }
.storage-bar { height: 4px; background: var(--color-border); border-radius: 99px; overflow: hidden; }
.storage-fill { height: 100%; border-radius: 99px; transition: width .4s; }
.storage-pct { font-size: 10px; color: var(--color-text-faint); margin-top: 4px; }

/* ── Topbar ── */
.topbar { height: var(--topbar-h); background: var(--color-surface); border-bottom: 0.5px solid var(--color-border); display: flex; align-items: center; padding: 0 16px; gap: 12px; position: sticky; top: 0; z-index: 50; }
.topbar-left  { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; min-width: 0; }
.topbar-center { flex: 1 1 0; display: flex; align-items: center; justify-content: center; min-width: 0; padding: 0 12px; }
.topbar-right { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.sidebar-toggle { background: none; border: none; cursor: pointer; color: var(--color-text-muted); font-size: 20px; padding: 4px; }
.breadcrumb { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--color-text-muted); }
.breadcrumb a { color: var(--color-primary); text-decoration: none; }
.breadcrumb i { font-size: 12px; }

/* ── Search ────────────────────────────────────────────── */
.search-wrap  { position: relative; width: 100%; max-width: 520px; }
.search-form  { display: flex; align-items: center; gap: 8px; background: var(--color-bg); border: 0.5px solid var(--color-border); border-radius: 10px; padding: 7px 12px; width: 100%; transition: border-color .2s, box-shadow .2s; }
.search-form:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px color-mix(in srgb,var(--color-primary) 12%,transparent); background: var(--color-surface); }
.search-form-icon { color: var(--color-text-faint); font-size: 16px; flex-shrink: 0; transition: color .2s; }
.search-form:focus-within .search-form-icon { color: var(--color-primary); }
.search-form input { border: none; background: transparent; outline: none; font-size: 13px; color: var(--color-text); width: 100%; font-family: inherit; }
.search-form input::placeholder { color: var(--color-text-faint); }
.search-kbd { font-size: 10px; color: var(--color-text-faint); background: var(--color-border); border-radius: 4px; padding: 2px 5px; font-family: inherit; white-space: nowrap; flex-shrink: 0; transition: opacity .2s; pointer-events: none; }
.search-form:focus-within .search-kbd { opacity: 0; }
#search-clear { display: none; background: none; border: none; cursor: pointer; color: var(--color-text-faint); padding: 0; line-height: 1; width: 18px; height: 18px; border-radius: 50%; display: none; align-items: center; justify-content: center; flex-shrink: 0; transition: background .15s, color .15s; }
#search-clear:hover { background: var(--color-border); color: var(--color-text); }
#search-clear i { font-size: 11px; }
/* dropdown */
.search-dropdown { position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%); width: max(100%, 440px); max-width: calc(100vw - 32px); background: var(--color-surface); border: 0.5px solid var(--color-border); border-radius: 14px; box-shadow: 0 12px 40px rgba(0,0,0,.13), 0 2px 8px rgba(0,0,0,.06); z-index: 600; max-height: 500px; overflow-y: auto; }
.search-section-label { padding: 10px 14px 4px; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--color-text-faint); display: flex; align-items: center; gap: 5px; }
.search-divider { height: 0.5px; background: var(--color-border); margin: 4px 0; }
.search-item { display: flex; align-items: center; gap: 10px; padding: 8px 14px; cursor: pointer; transition: background .1s; text-decoration: none; color: var(--color-text); border-radius: 0; }
.search-item:first-child { border-radius: 13px 13px 0 0; }
.search-item:hover, .search-item.active { background: var(--color-bg); }
.search-item-icon { width: 34px; height: 34px; border-radius: 9px; display: flex; align-items: center; justify-content: center; font-size: 17px; flex-shrink: 0; background: var(--color-bg); border: 0.5px solid var(--color-border); }
.search-item-body  { flex: 1; min-width: 0; }
.search-item-name  { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-item-name mark { background: color-mix(in srgb,var(--color-primary) 15%,transparent); color: var(--color-primary); border-radius: 3px; padding: 0 2px; font-style: normal; }
.search-item-meta  { font-size: 11px; color: var(--color-text-muted); margin-top: 1px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-item-size  { font-size: 11px; color: var(--color-text-faint); flex-shrink: 0; }
.search-footer { padding: 8px 14px 10px; border-top: 0.5px solid var(--color-border); }
.search-footer a { font-size: 12px; color: var(--color-primary); text-decoration: none; display: flex; align-items: center; gap: 6px; font-weight: 500; }
.search-footer a:hover { text-decoration: underline; }
.search-empty { padding: 32px 14px; text-align: center; color: var(--color-text-faint); font-size: 13px; }
.search-empty i { font-size: 32px; display: block; margin-bottom: 8px; opacity: .35; }
.search-loading { padding: 22px 14px; text-align: center; color: var(--color-text-faint); font-size: 13px; display: flex; align-items: center; justify-content: center; gap: 8px; }

.user-menu { display: flex; align-items: center; gap: 8px; cursor: pointer; padding: 5px 8px; border-radius: var(--radius); position: relative; transition: background .15s; }
.user-menu:hover { background: var(--color-bg); }
.user-avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--color-primary-bg); color: var(--color-primary); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 600; flex-shrink: 0; }
.user-nm { font-size: 13px; font-weight: 500; color: var(--color-text); }
.user-rl { font-size: 10px; color: var(--color-text-faint); }
.user-dropdown { position: absolute; top: calc(100% + 6px); right: 0; background: var(--color-surface); border: 0.5px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: 0 6px 20px rgba(0,0,0,.1); min-width: 160px; display: none; overflow: hidden; z-index: 200; }
.user-dropdown.show { display: block; }
.user-dropdown a { display: flex; align-items: center; gap: 8px; padding: 10px 14px; text-decoration: none; color: var(--color-text-muted); font-size: 13px; transition: background .15s; }
.user-dropdown a:hover { background: var(--color-bg); color: var(--color-text); }

/* ── Toolbar ── */
.toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; gap: 10px; flex-wrap: wrap; }
.toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 8px; }
.page-title { font-size: 18px; font-weight: 600; color: var(--color-text); }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: var(--radius); border: 0.5px solid var(--color-border-md); background: var(--color-surface); color: var(--color-text); font-size: 13px; font-weight: 500; cursor: pointer; transition: background .15s; font-family: inherit; text-decoration: none; white-space: nowrap; }
.btn:hover { background: var(--color-bg); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-primary { background: var(--color-primary); color: #fff; border-color: transparent; }
.btn-primary:hover { opacity: .9; background: var(--color-primary); }
.btn-danger { background: var(--color-danger-bg); color: var(--color-danger); border-color: transparent; }
.btn-danger:hover { background: var(--color-danger); color: #fff; }
.btn-success { background: var(--color-success-bg); color: var(--color-success); border-color: transparent; }

/* ── Filter / Sort bar ── */
.filter-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.filter-select { padding: 6px 10px; border: 0.5px solid var(--color-border); border-radius: var(--radius); background: var(--color-surface); color: var(--color-text); font-size: 13px; cursor: pointer; font-family: inherit; }
.view-toggle { display: flex; border: 0.5px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.view-btn { padding: 6px 10px; background: none; border: none; cursor: pointer; color: var(--color-text-faint); font-size: 16px; transition: background .15s; }
.view-btn.active { background: var(--color-bg); color: var(--color-text); }
.filter-count { font-size: 12px; color: var(--color-text-faint); margin-left: 4px; }

/* ── File Grid ── */
.files-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.file-card { background: var(--color-surface); border: 0.5px solid var(--color-border); border-radius: var(--radius-lg); padding: 14px 12px 12px; cursor: pointer; transition: border-color .15s, box-shadow .15s; position: relative; }
.file-card:hover { border-color: var(--color-border-md); box-shadow: var(--shadow-sm); }
.file-card.selected { border-color: var(--color-primary); background: var(--color-primary-bg); }
.file-thumb { width: 100%; aspect-ratio: 1; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 36px; margin-bottom: 10px; }
.file-card-name { font-size: 12px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 2px; }
.file-card-title { font-size: 11px; color: var(--color-text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 3px; }
.file-card-meta { font-size: 10px; color: var(--color-text-faint); }
.file-card-actions { position: absolute; top: 8px; right: 8px; display: none; gap: 3px; }
.file-card:hover .file-card-actions { display: flex; }

/* ── File List ── */
.files-list { display: flex; flex-direction: column; gap: 4px; }
.file-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--radius); border: 0.5px solid transparent; transition: background .15s; }
.file-row:hover { background: var(--color-surface); border-color: var(--color-border); }
.file-row-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
.file-row-info { flex: 1; min-width: 0; }
.file-row-name { font-size: 13px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row-title { font-size: 11px; color: var(--color-text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row-meta { font-size: 11px; color: var(--color-text-faint); }
.file-row-size { font-size: 12px; color: var(--color-text-muted); flex-shrink: 0; width: 80px; text-align: right; }
.file-row-date { font-size: 12px; color: var(--color-text-faint); flex-shrink: 0; width: 100px; text-align: right; }
.file-row-actions { display: none; gap: 4px; flex-shrink: 0; }
.file-row:hover .file-row-actions { display: flex; }

/* ── Icon btn ── */
.icon-btn { width: 26px; height: 26px; border-radius: 6px; border: 0.5px solid var(--color-border); background: var(--color-surface); display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--color-text-muted); font-size: 13px; transition: background .15s, color .15s; }
.icon-btn:hover { background: var(--color-bg); color: var(--color-text); }
.icon-btn.danger:hover { background: var(--color-danger-bg); color: var(--color-danger); border-color: var(--color-danger); }

/* ── Cat badge ── */
.cat-badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 4px; font-size: 10px; font-weight: 500; }
.cat-image    { background: #e1f5ee; color: #0F6E56; }
.cat-document { background: #e6f1fb; color: #185FA5; }
.cat-video    { background: #FBEAF0; color: #993556; }
.cat-audio    { background: #FAEEDA; color: #854F0B; }
.cat-other    { background: #F1EFE8; color: #5F5E5A; }

/* ── Folder card ── */
.folder-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 16px; }
.folder-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 14px 12px 10px;
  background: var(--color-surface);
  border: 0.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: background .15s, border-color .15s, box-shadow .15s;
  overflow: hidden;
}
.folder-card:hover { background: var(--color-primary-bg); border-color: var(--color-primary); box-shadow: 0 2px 8px rgba(0,0,0,.06); }
.folder-card-icon { width: 36px; height: 36px; border-radius: 10px; background: #FEF3E2; display: flex; align-items: center; justify-content: center; margin-bottom: 8px; align-self: flex-start; }
.folder-card-icon i { font-size: 20px; color: #BA7517; }
.folder-card-name { font-size: 13px; font-weight: 500; color: var(--color-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.folder-card-meta { font-size: 11px; color: var(--color-text-faint); margin-top: 2px; min-height: 14px; }
.folder-card-actions {
  display: none; gap: 2px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 0.5px solid var(--color-border);
}
.folder-card:hover .folder-card-actions { display: flex; }

/* ── Modals ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: none; align-items: center; justify-content: center; z-index: 1000; padding: 20px; }
.modal-overlay.show { display: flex; }
.modal { background: var(--color-surface); border-radius: var(--radius-lg); border: 0.5px solid var(--color-border); width: 100%; max-width: 480px; max-height: 90vh; overflow-y: auto; }
.modal-lg { max-width: 760px; }
.modal-xl { max-width: 1000px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 0.5px solid var(--color-border); }
.modal-header h3 { font-size: 15px; font-weight: 600; display: flex; align-items: center; gap: 7px; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--color-text-faint); font-size: 18px; padding: 2px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 0.5px solid var(--color-border); }
.modal > .form-group, .modal > div.form-group { padding: 14px 20px 0; }

.form-group { margin-bottom: 14px; padding: 0 20px; }
.form-group:first-of-type { padding-top: 16px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--color-text-muted); margin-bottom: 5px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; border: 0.5px solid var(--color-border-md); border-radius: var(--radius); background: var(--color-surface); color: var(--color-text); font-size: 13px; font-family: inherit; outline: none; transition: border-color .15s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--color-primary); }
.form-group textarea { resize: vertical; }

/* ── Dropzone ── */
.dropzone { border: 1.5px dashed var(--color-border-md); border-radius: var(--radius-lg); padding: 28px; text-align: center; cursor: pointer; transition: background .15s; margin: 16px 20px 0; }
.dropzone:hover, .dropzone.dragover { background: var(--color-primary-bg); border-color: var(--color-primary); }
.dropzone i { font-size: 36px; color: var(--color-text-faint); display: block; margin-bottom: 8px; }
.dropzone p { font-size: 13px; color: var(--color-text-muted); margin-bottom: 4px; }
.dropzone small { font-size: 11px; color: var(--color-text-faint); }
#selected-files { margin-top: 10px; font-size: 12px; color: var(--color-primary); }

/* ── Progress ── */
.progress-bar { height: 6px; background: var(--color-border); border-radius: 99px; overflow: hidden; margin: 10px 20px 4px; }
.progress-fill { height: 100%; background: var(--color-primary); border-radius: 99px; transition: width .3s; }
.progress-text { font-size: 12px; color: var(--color-text-muted); text-align: center; margin-bottom: 10px; }

/* ── Preview ── */
#preview-body { padding: 16px 20px; }
#preview-body img { width: 100%; border-radius: var(--radius); }
#preview-body video, #preview-body audio { width: 100%; }
#preview-body iframe { width: 100%; height: 500px; border: none; border-radius: var(--radius); }
#preview-body .office-frame { width: 100%; height: 75vh; min-height: 480px; border: none; border-radius: var(--radius); display: block; }
.office-loading { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 200px; gap: 12px; color: var(--color-text-muted); font-size: 13px; }
.office-loading i { font-size: 36px; }
@keyframes spin { to { transform: rotate(360deg); } }
.spin { display: inline-block; animation: spin 0.8s linear infinite; }
.preview-info { background: var(--color-bg); border-radius: var(--radius); padding: 12px; margin-top: 12px; font-size: 12px; color: var(--color-text-muted); display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.preview-info span { color: var(--color-text); font-weight: 500; }

/* ── Share ── */
.share-link-box { display: flex; gap: 6px; }
.share-link-box input { flex: 1; background: var(--color-bg); }
.share-expires { font-size: 11px; color: var(--color-text-faint); margin-top: 6px; }

/* ── Stats cards ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; margin-bottom: 24px; }
.stat-card { background: var(--color-surface); border: 0.5px solid var(--color-border); border-radius: var(--radius-lg); padding: 16px; }
.stat-label { font-size: 11px; color: var(--color-text-faint); margin-bottom: 4px; }
.stat-value { font-size: 24px; font-weight: 600; color: var(--color-text); }
.stat-sub { font-size: 11px; color: var(--color-text-muted); margin-top: 2px; }

/* ── User table ── */
.data-table { width: 100%; border-collapse: collapse; background: var(--color-surface); border-radius: var(--radius-lg); overflow: hidden; border: 0.5px solid var(--color-border); }
.data-table th { padding: 11px 14px; font-size: 11px; font-weight: 600; color: var(--color-text-faint); text-align: left; background: var(--color-bg); border-bottom: 0.5px solid var(--color-border); }
.data-table td { padding: 12px 14px; font-size: 13px; border-bottom: 0.5px solid var(--color-border); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--color-bg); }

/* ── Pill ── */
.pill { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 99px; font-size: 11px; font-weight: 500; }
.pill-admin   { background: var(--color-primary-bg); color: var(--color-primary); }
.pill-user    { background: var(--color-success-bg); color: var(--color-success); }
.pill-warn    { background: var(--color-warning-bg); color: var(--color-warning); }
.pill-danger  { background: var(--color-danger-bg);  color: var(--color-danger); }
.pill-active  { background: var(--color-success-bg); color: var(--color-success); }
.pill-inactive{ background: var(--color-border); color: var(--color-text-faint); }

/* ── Storage bar in table ── */
.tbl-storage { width: 100px; }
.tbl-bar { height: 4px; background: var(--color-border); border-radius: 99px; overflow: hidden; margin-top: 3px; }
.tbl-fill { height: 100%; border-radius: 99px; }

/* ── Toast ── */
#toast-wrap { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 9999; }
.toast { display: flex; align-items: center; gap: 10px; background: var(--color-surface); border: 0.5px solid var(--color-border); border-radius: var(--radius-lg); padding: 12px 16px; font-size: 13px; box-shadow: 0 4px 16px rgba(0,0,0,.1); animation: slideup .2s ease; min-width: 220px; }
@keyframes slideup { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.toast i { font-size: 18px; flex-shrink: 0; }

/* ── Empty state ── */
.empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-faint); }
.empty-state i { font-size: 48px; display: block; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* ── Login ── */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--color-bg); }
.login-card { background: var(--color-surface); border: 0.5px solid var(--color-border); border-radius: var(--radius-lg); padding: 36px; width: 100%; max-width: 380px; }
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .logo-icon { width: 52px; height: 52px; font-size: 26px; margin: 0 auto 10px; }
.login-logo h1 { font-size: 22px; font-weight: 700; }
.login-logo p { font-size: 12px; color: var(--color-text-faint); }
.login-card .form-group { padding: 0; margin-bottom: 14px; }
.login-error { color: var(--color-danger); font-size: 13px; text-align: center; margin-bottom: 10px; background: var(--color-danger-bg); padding: 8px; border-radius: var(--radius); }

/* ── Responsive ── */
@media (max-width: 768px) {
  #sidebar { transform: translateX(-100%); }
  #sidebar.open { transform: none; }
  #main-area { margin-left: 0; }
  .files-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
}