:root{--primary: #6366f1;--primary-hover: #4f46e5;--danger: #ef4444;--warning: #f59e0b;--success: #10b981;--text: #1e293b;--text-muted: #64748b;--bg: #f8fafc;--surface: #ffffff;--border: #e2e8f0}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.page{max-width:1200px;margin:0 auto;padding:2rem 1.5rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:1.25rem}.card.clickable:hover{border-color:var(--primary)}.flex{display:flex}.gap-1{gap:.5rem}.grid{display:grid}.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:1fr 1fr 1fr}.grid-4{grid-template-columns:1fr 1fr 1fr 1fr}@media (max-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}h1{font-size:1.5rem;margin-bottom:1rem}h2{font-size:1.2rem;margin-bottom:.75rem}h3{font-size:1rem}.app-header{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.5rem;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.nav-link{text-decoration:none;color:var(--text-muted);font-size:.85rem;padding:.35rem .6rem;border-radius:4px;transition:all .15s}.nav-link:hover{color:var(--text);background:var(--bg)}.nav-link.active{color:var(--primary);background:#6366f110;font-weight:600}.badge{display:inline-block;padding:.15rem .5rem;border-radius:4px;font-size:.7rem;font-weight:600;background:var(--bg);color:var(--text-muted)}.btn{display:inline-block;padding:.5rem 1rem;border-radius:6px;font-size:.85rem;font-weight:500;border:none;cursor:pointer;text-decoration:none;transition:all .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}.btn:disabled{opacity:.5;cursor:not-allowed}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.8rem;font-weight:500;color:var(--text-muted);margin-bottom:.25rem}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.5rem .75rem;border:1px solid var(--border);border-radius:6px;font-size:.9rem;background:var(--surface);color:var(--text)}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px #6366f120}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:.6rem .75rem;text-align:left;border-bottom:1px solid var(--border)}.table th{font-size:.75rem;font-weight:600;color:var(--text-muted);text-transform:uppercase}.table td{font-size:.85rem}.table tr:hover td{background:var(--bg)}.alert{padding:.75rem 1rem;border-radius:6px;font-size:.85rem}.alert-danger{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}.alert-warning{background:#fffbeb;border:1px solid #fed7aa;color:#92400e}.alert-success{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}