* { margin:0; padding:0; box-sizing:border-box; }
:root {
  --blue: #1a3a5c;
  --blue-light: #2a5580;
  --accent: #f0a500;
  --bg: #f0f2f5;
  --card: #fff;
  --border: #dde3ea;
  --text: #222;
  --text-muted: #888;
  --danger: #dc3545;
  --success: #28a745;
  --radius: 8px;
}

body { font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }

/* ─── HEADER ─── */
.header {
  background: var(--blue);
  color: #fff;
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.header h1 { font-size: 20px; display:flex; align-items:center; gap:10px; }
.header-right { display:flex; align-items:center; gap:16px; font-size:14px; }
.header-right a { color:rgba(255,255,255,0.8); text-decoration:none; cursor:pointer; }
.header-right a:hover { color:#fff; }

/* ─── VIEWS ─── */
.view { display: none; padding: 24px; max-width: 1200px; margin: 0 auto; }
.view.active { display: block; }

/* ─── CARDS ─── */
.card { background: var(--card); border-radius: var(--radius); box-shadow: 0 1px 4px rgba(0,0,0,0.08); }

/* ─── BUTTONS ─── */
.btn { display:inline-flex; align-items:center; gap:6px; padding:8px 16px; border-radius:var(--radius); border:none; cursor:pointer; font-size:14px; font-weight:600; transition:all 0.15s; text-decoration:none; }
.btn-primary { background:var(--blue); color:#fff; }
.btn-primary:hover { background:var(--blue-light); }
.btn-accent { background:var(--accent); color:#fff; }
.btn-accent:hover { background:#d4920a; }
.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { background:#b82d3a; }
.btn-outline { background:transparent; color:var(--blue); border:2px solid var(--blue); }
.btn-outline:hover { background:var(--blue); color:#fff; }
.btn-sm { padding:5px 10px; font-size:12px; }
.btn-icon { padding:6px 10px; }
.btn:disabled { opacity:0.5; cursor:not-allowed; }

/* ─── PRESENTATIONS LIST ─── */
.pres-grid { display:grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap:20px; margin-top:20px; }
.pres-card { background:var(--card); border-radius:var(--radius); padding:20px; box-shadow:0 1px 4px rgba(0,0,0,0.08); cursor:pointer; transition:box-shadow 0.2s, transform 0.1s; border:2px solid transparent; }
.pres-card:hover { box-shadow:0 4px 16px rgba(0,0,0,0.12); transform:translateY(-2px); border-color:var(--blue); }
.pres-card .pres-title { font-size:18px; font-weight:700; margin-bottom:6px; color:var(--blue); }
.pres-card .pres-meta { font-size:12px; color:var(--text-muted); display:flex; gap:12px; flex-wrap:wrap; }
.pres-card .status-badge { display:inline-block; padding:2px 8px; border-radius:20px; font-size:11px; font-weight:600; margin-bottom:8px; }
.status-draft { background:#fff3cd; color:#856404; }
.status-ready { background:#d1e7dd; color:#0a6640; }
.status-archived { background:#e9ecef; color:#666; }

/* ─── EDITOR ─── */
.editor-layout { display:grid; grid-template-columns:320px 1fr; gap:0; height:calc(100vh - 56px); overflow:hidden; }
.editor-sidebar { border-right:2px solid var(--border); display:flex; flex-direction:column; overflow:hidden; background:#fff; }
.editor-sidebar-header { padding:14px 16px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; background:var(--blue); color:#fff; }
.editor-sidebar-header h2 { font-size:15px; }
.slides-list { flex:1; overflow-y:auto; padding:8px; display:flex; flex-direction:column; gap:4px; }
.slide-thumb { display:flex; align-items:center; gap:10px; padding:8px 10px; border-radius:6px; cursor:pointer; border:2px solid transparent; transition:all 0.15s; background:#f8f9fa; }
.slide-thumb:hover { background:#e9f0f8; border-color:#b8d0e8; }
.slide-thumb.active { background:#e0edf8; border-color:var(--blue); }
.slide-thumb .slide-num { font-size:11px; color:var(--text-muted); min-width:22px; font-weight:600; }
.slide-thumb .slide-icon { font-size:18px; }
.slide-thumb .slide-info { flex:1; min-width:0; }
.slide-thumb .slide-tmpl { font-size:11px; font-weight:600; color:var(--blue); }
.slide-thumb .slide-preview-text { font-size:12px; color:var(--text-muted); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.slide-thumb .slide-actions { display:none; gap:2px; }
.slide-thumb:hover .slide-actions { display:flex; }
.slide-thumb img.thumb-img { width:64px; height:51px; object-fit:cover; border-radius:4px; border:1px solid var(--border); background:#eee; flex-shrink:0; }

.editor-main { overflow-y:auto; padding:24px; background:var(--bg); }

/* ─── SLIDE EDITOR PANEL ─── */
.slide-editor-panel { background:#fff; border-radius:var(--radius); padding:24px; box-shadow:0 1px 4px rgba(0,0,0,0.08); }
.slide-editor-panel h3 { font-size:18px; color:var(--blue); margin-bottom:20px; display:flex; align-items:center; gap:10px; }
.field-group { margin-bottom:16px; }
.field-group label { display:block; font-size:13px; font-weight:600; color:#555; margin-bottom:5px; }
.field-group input[type="text"],
.field-group input[type="number"],
.field-group input[type="color"],
.field-group textarea,
.field-group select { width:100%; padding:8px 12px; border:2px solid var(--border); border-radius:6px; font-size:14px; outline:none; transition:border-color 0.2s; font-family:inherit; }
.field-group input:focus,
.field-group textarea:focus,
.field-group select:focus { border-color:var(--blue); }
.field-group textarea { resize:vertical; min-height:80px; }
.field-group .color-row { display:flex; align-items:center; gap:8px; }
.field-group input[type="color"] { width:44px; height:36px; padding:2px; cursor:pointer; }

.ai-actions { display:flex; gap:6px; flex-wrap:wrap; margin-top:6px; }
.slide-preview-container { margin-top:20px; }
.slide-preview-container h4 { font-size:13px; color:var(--text-muted); margin-bottom:8px; }
.slide-preview-img { width:360px; height:288px; object-fit:cover; border:2px solid var(--border); border-radius:6px; background:#eee; display:block; }
.slide-preview-img.loading { opacity:0.5; }

.duration-row { display:flex; align-items:center; gap:12px; }
.duration-row input { width:80px; }

/* ─── MEDIA PICKER ─── */
.media-picker-btn { display:flex; align-items:center; gap:8px; padding:8px 12px; border:2px dashed var(--border); border-radius:6px; cursor:pointer; font-size:13px; color:var(--text-muted); background:#fafafa; width:100%; transition:all 0.15s; }
.media-picker-btn:hover { border-color:var(--blue); color:var(--blue); background:#f0f5fb; }
.media-picker-btn .media-preview { width:48px; height:36px; object-fit:cover; border-radius:4px; }

/* ─── MODALS ─── */
.modal-overlay { display:none; position:fixed; top:0; left:0; right:0; bottom:0; background:rgba(0,0,0,0.5); z-index:200; align-items:center; justify-content:center; }
.modal-overlay.open { display:flex; }
.modal { background:#fff; border-radius:12px; padding:0; box-shadow:0 8px 32px rgba(0,0,0,0.2); max-width:700px; width:95%; max-height:90vh; display:flex; flex-direction:column; }
.modal-header { padding:20px 24px 16px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; }
.modal-header h3 { font-size:18px; color:var(--blue); }
.modal-close { background:none; border:none; font-size:22px; cursor:pointer; color:var(--text-muted); padding:2px 6px; border-radius:4px; }
.modal-close:hover { background:var(--bg); }
.modal-body { padding:20px 24px; overflow-y:auto; flex:1; }
.modal-footer { padding:16px 24px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:10px; }

/* ─── TEMPLATE PICKER ─── */
.tmpl-grid { display:grid; grid-template-columns:repeat(2, 1fr); gap:12px; }
.tmpl-item { padding:16px; border:2px solid var(--border); border-radius:8px; cursor:pointer; transition:all 0.15s; }
.tmpl-item:hover { border-color:var(--blue); background:#f0f5fb; }
.tmpl-item .tmpl-icon { font-size:28px; margin-bottom:8px; }
.tmpl-item .tmpl-label { font-size:15px; font-weight:700; color:var(--blue); }
.tmpl-item .tmpl-desc { font-size:12px; color:var(--text-muted); margin-top:4px; }

/* ─── MEDIA LIBRARY ─── */
.media-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(140px, 1fr)); gap:12px; }
.media-item { border:2px solid var(--border); border-radius:8px; overflow:hidden; cursor:pointer; transition:all 0.15s; background:#fafafa; }
.media-item:hover { border-color:var(--blue); }
.media-item.selected { border-color:var(--accent); background:#fffbf0; }
.media-item img { width:100%; height:90px; object-fit:contain; background:#f0f0f0; display:block; padding:4px; }
.media-item .media-icon-large { width:100%; height:90px; display:flex; align-items:center; justify-content:center; font-size:36px; background:#f5f5f5; }
.media-item .media-label { padding:6px 8px; font-size:11px; color:var(--text); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }

/* ─── RENDER PANEL ─── */
.render-panel { background:#fff; border-radius:var(--radius); padding:20px; margin-top:20px; }
.render-panel h3 { font-size:16px; color:var(--blue); margin-bottom:16px; }
.progress-bar-wrap { background:#eee; border-radius:20px; height:12px; overflow:hidden; margin:10px 0; }
.progress-bar { height:100%; background:var(--blue); transition:width 0.5s; border-radius:20px; }
.job-status { font-size:13px; color:var(--text-muted); margin-top:6px; }

/* ─── TOAST ─── */
.toast-container { position:fixed; bottom:24px; right:24px; z-index:999; display:flex; flex-direction:column; gap:8px; }
.toast { padding:12px 20px; border-radius:8px; font-size:14px; color:#fff; box-shadow:0 4px 12px rgba(0,0,0,0.2); animation:slideIn 0.3s ease; }
.toast-success { background:#28a745; }
.toast-error { background:#dc3545; }
.toast-info { background:#1a3a5c; }
@keyframes slideIn { from { transform:translateX(100px); opacity:0; } to { transform:translateX(0); opacity:1; } }

/* ─── MUSIC SETTINGS ─── */
.music-row { display:flex; align-items:center; gap:12px; flex-wrap:wrap; }
.music-row audio { flex:1; min-width:200px; }

/* ─── EMPTY STATE ─── */
.empty-state { text-align:center; padding:60px 20px; color:var(--text-muted); }
.empty-state .icon { font-size:56px; margin-bottom:16px; }
.empty-state h3 { font-size:20px; color:var(--text); margin-bottom:8px; }
.empty-state p { font-size:14px; }

/* ─── TOOLBAR ─── */
.toolbar { display:flex; align-items:center; gap:10px; margin-bottom:20px; flex-wrap:wrap; }
.toolbar-sep { width:1px; height:28px; background:var(--border); }

/* Slide drag handle */
.drag-handle { cursor:grab; color:var(--text-muted); font-size:14px; flex-shrink:0; }
.drag-handle:active { cursor:grabbing; }
.sortable-ghost { opacity:0.4; }

/* ─── RESPONSIVE ─── */
@media (max-width:768px) {
  .editor-layout { grid-template-columns:1fr; height:auto; }
  .editor-sidebar { height:auto; max-height:300px; border-right:none; border-bottom:2px solid var(--border); }
  .tmpl-grid { grid-template-columns:1fr 1fr; }
}