:root{--bg: #0f1117;--bg-panel: #161b22;--bg-card: #1c2230;--bg-input: #0d1117;--border: #2d3748;--border-soft:#1e293b;--text: #e2e8f0;--text-muted: #64748b;--text-dim: #94a3b8;--accent: #3b82f6;--accent-dim: #1e3a5f;--green: #22c55e;--green-dim: #14532d;--amber: #f59e0b;--red: #ef4444;--red-dim: #450a0a;--purple: #7c3aed;--radius: 10px;--radius-sm: 7px;font-family:Inter,Segoe UI,system-ui,sans-serif;font-size:14px;color:var(--text);background:var(--bg)}[data-theme=light]{--bg: #f1f5f9;--bg-panel: #ffffff;--bg-card: #ffffff;--bg-input: #f8fafc;--border: #e2e8f0;--border-soft:#f1f5f9;--text: #0f172a;--text-muted: #94a3b8;--text-dim: #475569;--accent: #2563eb;--accent-dim: #dbeafe;--green: #16a34a;--green-dim: #dcfce7;--amber: #d97706;--red: #dc2626;--red-dim: #fee2e2;--purple: #7c3aed}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);transition:background .2s}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;gap:24px;padding:0 28px;height:56px;background:var(--bg-panel);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.app-logo{font-size:15px;font-weight:700;color:var(--text);letter-spacing:-.3px;white-space:nowrap}.app-logo span{color:var(--accent)}.app-nav{display:flex;gap:4px;flex:1}.app-nav a{padding:6px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;color:var(--text-muted);transition:background .15s,color .15s}.app-nav a:hover{background:var(--bg-card);color:var(--text);text-decoration:none}.app-nav a.active{background:var(--accent-dim);color:var(--accent)}.app-header-right{display:flex;align-items:center;gap:12px;margin-left:auto}.user-badge{font-size:12px;color:var(--text-muted)}.app-main{flex:1;padding:28px;max-width:1400px;width:100%;margin:0 auto}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-title{font-size:22px;font-weight:700;color:var(--text);letter-spacing:-.5px}.page-subtitle{font-size:13px;color:var(--text-muted);margin-top:3px}button,.btn{font:inherit;border:none;border-radius:var(--radius-sm);padding:8px 16px;cursor:pointer;font-size:13px;font-weight:500;transition:opacity .15s,background .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{opacity:.88}.btn-success{background:var(--green);color:#fff}.btn-success:hover{opacity:.88}.btn-danger{background:transparent;color:var(--red);border:1px solid #4a2020}.btn-danger:hover{background:var(--red-dim)}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg-card);color:var(--text)}.btn-purple{background:var(--purple);color:#fff}.btn-purple:hover{opacity:.88}button:disabled,.btn:disabled{opacity:.45;cursor:not-allowed}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.form-field{display:flex;flex-direction:column;gap:5px}.form-field label,.form-field>span{font-size:12px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.4px}.form-field.full{grid-column:1 / -1}input,select,textarea{font:inherit;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);padding:9px 11px;color:var(--text);width:100%;outline:none;transition:border-color .15s}input:focus,select:focus,textarea:focus{border-color:var(--accent)}input::placeholder,textarea::placeholder{color:var(--text-muted)}select option{background:var(--bg-panel)}.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}table{width:100%;border-collapse:collapse}thead{background:var(--bg-panel)}th{text-align:left;padding:10px 14px;font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border)}td{padding:12px 14px;border-bottom:1px solid var(--border-soft);color:var(--text);font-size:13px;vertical-align:middle}tr:last-child td{border-bottom:none}tbody tr:hover{background:#ffffff05}.chip{display:inline-flex;align-items:center;padding:3px 9px;border-radius:999px;font-size:11px;font-weight:600;letter-spacing:.3px}.alert{padding:10px 14px;border-radius:var(--radius-sm);font-size:13px}.alert.error{background:var(--red-dim);color:#fca5a5;border:1px solid #7f1d1d}.alert.success{background:var(--green-dim);color:#86efac;border:1px solid #14532d}.alert.info{background:var(--accent-dim);color:#93c5fd;border:1px solid #1e3a5f}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:36px 32px;width:380px}.login-card h2{font-size:20px;font-weight:700;margin-bottom:8px;color:var(--text)}.login-card p{font-size:13px;color:var(--text-muted);margin-bottom:24px}.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.library-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:border-color .15s,transform .15s;cursor:pointer}.library-item:hover{border-color:var(--accent);transform:translateY(-2px)}.library-item-thumb{height:160px;background:linear-gradient(45deg,#1a1f2e 25%,transparent 25%),linear-gradient(-45deg,#1a1f2e 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#1a1f2e 75%),linear-gradient(-45deg,transparent 75%,#1a1f2e 75%);background-size:14px 14px;background-position:0 0,0 7px,7px -7px,-7px 0;background-color:#111827;display:flex;align-items:center;justify-content:center;overflow:hidden}.library-item-thumb img{max-height:100%;max-width:100%;object-fit:contain}.library-item-body{padding:14px}.library-item-label{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.library-item-meta{font-size:12px;color:var(--text-muted)}.divider{border:none;border-top:1px solid var(--border);margin:16px 0}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}@media(max-width:900px){.form-grid{grid-template-columns:1fr}.app-main{padding:16px}}