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

:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface2: #273549;
  --border: #334155;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #6366f1;
  --radius: 8px;
  --sidebar-w: 220px;
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; }

/* ── Sidebar ── */
#sidebar {
  width: var(--sidebar-w); min-height: 100vh; background: var(--surface);
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; z-index: 100;
}
#sidebar .brand { padding: 1.25rem 1rem; border-bottom: 1px solid var(--border); }
#sidebar .brand h1 { font-size: 1rem; font-weight: 700; color: var(--primary); }
#sidebar .brand p { font-size: 0.7rem; color: var(--text-muted); margin-top: 2px; }
#sidebar nav { flex: 1; padding: 0.75rem 0; }
#sidebar nav a {
  display: flex; align-items: center; gap: 0.6rem; padding: 0.65rem 1rem;
  color: var(--text-muted); text-decoration: none; font-size: 0.875rem;
  transition: all 0.15s; border-left: 3px solid transparent;
}
#sidebar nav a:hover { color: var(--text); background: var(--surface2); }
#sidebar nav a.active { color: var(--primary); background: rgba(59,130,246,0.1); border-left-color: var(--primary); }
#sidebar nav a .icon { font-size: 1rem; width: 1.25rem; text-align: center; }
#sidebar .sidebar-footer { padding: 0.75rem 1rem; border-top: 1px solid var(--border); font-size: 0.7rem; color: var(--text-muted); }

/* ── Main ── */
#main { margin-left: var(--sidebar-w); flex: 1; padding: 1.5rem; max-width: calc(100vw - var(--sidebar-w)); }
.page-header { margin-bottom: 1.5rem; display: flex; align-items: center; justify-content: space-between; flex-wrap: gap; }
.page-header h2 { font-size: 1.25rem; font-weight: 600; }
.page-header .actions { display: flex; gap: 0.5rem; }

/* ── Tabs (pages) ── */
.tab { display: none; }
.tab.active { display: block; }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.5rem 1rem; border: none; border-radius: var(--radius); font-size: 0.8125rem; font-weight: 500; cursor: pointer; transition: all 0.15s; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover:not(:disabled) { background: #059669; }
.btn-danger { background: var(--error); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #dc2626; }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover:not(:disabled) { background: var(--surface2); color: var(--text); }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.75rem; }
.btn-xs { padding: 0.2rem 0.5rem; font-size: 0.7rem; border-radius: 4px; }

/* ── Cards ── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.75rem; }

/* ── Video Grid ── */
#videos-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 1rem; }
.video-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.video-card-header { padding: 0.875rem 1rem 0.5rem; }
.video-card-header .date { font-size: 0.7rem; color: var(--text-muted); margin-bottom: 0.25rem; }
.video-card-header .folder { font-size: 0.8125rem; font-weight: 600; color: var(--text); line-height: 1.3; }
.video-card-header .title-preview { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; font-style: italic; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.words-row { display: flex; flex-wrap: wrap; gap: 0.25rem; padding: 0 1rem 0.5rem; }
.word-badge { background: rgba(99,102,241,0.2); color: #a5b4fc; font-size: 0.7rem; padding: 0.15rem 0.5rem; border-radius: 20px; border: 1px solid rgba(99,102,241,0.3); }
.platforms-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.25rem; padding: 0.5rem 1rem; border-top: 1px solid var(--border); }
.platform-item { display: flex; align-items: center; justify-content: space-between; padding: 0.35rem 0.5rem; background: var(--surface2); border-radius: 6px; }
.platform-item .plat-name { font-size: 0.7rem; color: var(--text-muted); }
.platform-item .plat-actions { display: flex; align-items: center; gap: 0.3rem; }
.video-card-footer { padding: 0.5rem 1rem 0.75rem; display: flex; gap: 0.4rem; }

/* ── Status Badges ── */
.badge { display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.15rem 0.5rem; border-radius: 20px; font-size: 0.65rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.badge-pending { background: rgba(148,163,184,0.15); color: #94a3b8; }
.badge-uploading { background: rgba(59,130,246,0.2); color: #60a5fa; }
.badge-published { background: rgba(16,185,129,0.2); color: #34d399; }
.badge-failed { background: rgba(239,68,68,0.2); color: #f87171; }

/* ── Table ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.8125rem; }
th { padding: 0.6rem 0.75rem; text-align: left; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); border-bottom: 1px solid var(--border); }
td { padding: 0.6rem 0.75rem; border-bottom: 1px solid rgba(51,65,85,0.5); vertical-align: top; }
tr:hover td { background: rgba(30,41,59,0.5); }
.td-small { font-size: 0.7rem; color: var(--text-muted); }
.td-mono { font-family: monospace; font-size: 0.75rem; }
.td-error { color: var(--error); font-size: 0.7rem; max-width: 200px; word-break: break-word; }

/* ── Settings Form ── */
.settings-section { margin-bottom: 1.5rem; }
.settings-section h3 { font-size: 0.875rem; font-weight: 600; color: var(--text); margin-bottom: 0.75rem; padding-bottom: 0.4rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 0.5rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.form-grid.single { grid-template-columns: 1fr; }
.form-group { display: flex; flex-direction: column; gap: 0.3rem; }
.form-group label { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }
.form-group input, .form-group textarea, .form-group select {
  background: var(--surface2); border: 1px solid var(--border); color: var(--text);
  padding: 0.5rem 0.75rem; border-radius: 6px; font-size: 0.8125rem; font-family: inherit;
  transition: border-color 0.15s; width: 100%;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group .hint { font-size: 0.7rem; color: var(--text-muted); }
.toggle-row { display: flex; align-items: center; gap: 0.75rem; }
.toggle { position: relative; display: inline-block; width: 40px; height: 22px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; inset: 0; background: var(--border); border-radius: 22px; cursor: pointer; transition: 0.2s; }
.toggle-slider::before { content: ''; position: absolute; width: 16px; height: 16px; left: 3px; bottom: 3px; background: #fff; border-radius: 50%; transition: 0.2s; }
.toggle input:checked + .toggle-slider { background: var(--primary); }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); }
.days-row { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.day-btn { padding: 0.3rem 0.6rem; border: 1px solid var(--border); border-radius: 6px; background: var(--surface2); color: var(--text-muted); font-size: 0.75rem; cursor: pointer; transition: all 0.15s; }
.day-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ── Filters ── */
.filters { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.filters select, .filters input { background: var(--surface); border: 1px solid var(--border); color: var(--text); padding: 0.4rem 0.75rem; border-radius: 6px; font-size: 0.8125rem; }

/* ── Toast ── */
#toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; z-index: 9999; }
.toast { padding: 0.75rem 1rem; border-radius: var(--radius); font-size: 0.8125rem; min-width: 260px; max-width: 380px; animation: slideIn 0.2s ease; box-shadow: 0 4px 20px rgba(0,0,0,0.4); }
.toast-success { background: #064e3b; border: 1px solid var(--success); color: #6ee7b7; }
.toast-error { background: #450a0a; border: 1px solid var(--error); color: #fca5a5; }
.toast-info { background: #1e1b4b; border: 1px solid var(--info); color: #a5b4fc; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: none; opacity: 1; } }

/* ── Spinner ── */
.spinner { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Misc ── */
.empty-state { padding: 3rem; text-align: center; color: var(--text-muted); }
.empty-state .icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.section-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; }
.pill { display: inline-block; padding: 0.1rem 0.5rem; border-radius: 20px; font-size: 0.7rem; background: var(--surface2); color: var(--text-muted); }

@media (max-width: 768px) {
  :root { --sidebar-w: 60px; }
  #sidebar .brand h1, #sidebar .brand p, #sidebar nav a span { display: none; }
  #sidebar nav a { justify-content: center; padding: 0.75rem; }
  .form-grid { grid-template-columns: 1fr; }
  #videos-grid { grid-template-columns: 1fr; }
}