:root{--bg: #0f1115;--panel: #171a21;--panel-2: #1e222b;--border: #2a2f3a;--text: #e6e8ec;--text-dim: #9aa1ad;--accent: #5b8cff;--accent-dim: #2c3e6b;--danger: #ef5a5a;--success: #4caf7d;--warn: #d9a441;--radius: 8px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px}.layout{display:flex;min-height:100vh}.sidebar{width:220px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);padding:16px 12px}.brand{font-weight:700;font-size:18px;padding:8px 10px 20px;color:var(--accent)}.sidebar nav{display:flex;flex-direction:column;gap:2px}.sidebar nav a{color:var(--text-dim);text-decoration:none;padding:9px 10px;border-radius:var(--radius);font-weight:500}.sidebar nav a:hover{background:var(--panel-2);color:var(--text)}.sidebar nav a.active{background:var(--accent-dim);color:var(--text)}.sidebar{display:flex;flex-direction:column}.sidebar nav{flex:1}.sidebar-user{border-top:1px solid var(--border);padding:14px 10px 4px}.sidebar-user-name{font-weight:600;font-size:13px}.sidebar-user-role{color:var(--text-dim);font-size:12px;margin-bottom:10px}.sidebar-user button{width:100%}.content{flex:1;padding:28px 32px;max-width:1400px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{width:340px;max-width:100%;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:28px}h1{font-size:20px;margin:0 0 20px}h2{font-size:16px;margin:0 0 12px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}table{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border)}th{color:var(--text-dim);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em}tr:last-child td{border-bottom:none}tbody tr:hover{background:var(--panel-2);cursor:pointer}button{font:inherit;cursor:pointer;background:var(--accent);color:#fff;border:none;padding:8px 16px;border-radius:var(--radius);font-weight:600;white-space:nowrap;transition:filter .1s,transform .05s}button:hover{filter:brightness(1.1)}button:active{transform:scale(.98)}button:disabled{opacity:.5;cursor:not-allowed;filter:none;transform:none}button.secondary{background:var(--panel-2);color:var(--text);border:1px solid var(--border)}button.danger{background:var(--danger)}button.small{padding:7px 14px;font-size:13px;border-radius:7px}.row-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}input,select,textarea{font:inherit;background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:var(--radius);width:100%}label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--text-dim);margin-bottom:12px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.checkbox-row{flex-direction:row;align-items:center;gap:8px}.checkbox-row input{width:auto}.error-banner{background:#ef5a5a1f;border:1px solid var(--danger);color:#ff9a9a;padding:10px 14px;border-radius:var(--radius);margin-bottom:16px;font-size:13px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}.badge.DRAFT{background:#d9a4412e;color:var(--warn)}.badge.PUBLISHED{background:#4caf7d2e;color:var(--success)}.badge.CANCELLED{background:#ef5a5a2e;color:var(--danger)}.badge.COMPLETED{background:#9aa1ad2e;color:var(--text-dim)}.badge.ACTIVE{background:#4caf7d2e;color:var(--success)}.badge.BLOCKED{background:#ef5a5a2e;color:var(--danger)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:flex-start;justify-content:center;padding:60px 20px;z-index:50}.modal{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:24px;width:480px;max-width:100%}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:8px}.schedule-toolbar{display:flex;align-items:center;gap:12px;margin-bottom:20px}.schedule-toolbar select,.schedule-toolbar input[type=date]{width:auto}.date-nav{display:flex;gap:4px}.hall-row{margin-bottom:18px}.hall-row-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.hall-row-header .hall-name{font-weight:600}.hall-row-header .hall-meta{color:var(--text-dim);font-size:12px}.timeline{position:relative;height:56px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius)}.timeline-hour-marks{position:absolute;top:0;right:0;bottom:0;left:0;display:flex}.timeline-hour-marks span{flex:1;border-right:1px solid var(--border);font-size:10px;color:var(--text-dim);padding:2px 4px}.timeline-hour-marks span:last-child{border-right:none}.session-block{position:absolute;top:6px;bottom:6px;border-radius:6px;padding:4px 8px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:12px;border:1px solid rgba(255,255,255,.15);cursor:pointer}.session-block.DRAFT{background:#d9a44159}.session-block.PUBLISHED{background:#5b8cff66}.session-block.CANCELLED{background:#ef5a5a40;text-decoration:line-through;opacity:.6}.session-block.COMPLETED{background:#9aa1ad40}.empty-state{color:var(--text-dim);padding:40px;text-align:center;background:var(--panel);border:1px dashed var(--border);border-radius:var(--radius)}.seatmap-toolbar{display:flex;gap:20px;margin-bottom:16px}.seatmap-toolbar input{width:auto}.seatmap-categories{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.seatmap-select-bar{display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;margin-bottom:16px}.seatmap-cat-chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel-2);color:var(--text);border:1px solid var(--border);padding:6px 12px;border-radius:999px;font-weight:500;font-size:13px}.seatmap-cat-chip.active{background:var(--accent-dim);box-shadow:0 0 0 2px var(--accent) inset}.seatmap-cat-dot{width:10px;height:10px;border-radius:50%;display:inline-block}.seatmap-grid-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:20px}.seatmap-grid{display:grid;gap:3px;width:max-content;-webkit-user-select:none;user-select:none}.seatmap-cell{position:relative;width:26px;height:26px;border-radius:4px;background:var(--panel-2);border:1px solid var(--border);cursor:pointer}.seatmap-cell:hover{filter:brightness(1.3)}.seatmap-cell.accessible{box-shadow:0 0 0 2px var(--success) inset}.seatmap-cell.accessible:after{content:"♿";position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:12px;text-shadow:0 0 2px #000,0 0 2px #000}.seatmap-cat-form{display:flex;gap:8px;align-items:center}.seatmap-cat-form input[type=text],.seatmap-cat-form input:not([type]){width:220px}.seatmap-cat-form input[type=color]{width:44px;padding:2px}