*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{color:#1a202c;background:#f0f4f8;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}nav{background:#1a56db;align-items:center;gap:8px;height:56px;padding:0 24px;display:flex}nav .brand{color:#fff;margin-right:auto;font-size:18px;font-weight:700}nav button{color:#fff;cursor:pointer;background:0 0;border:1px solid #fff6;border-radius:6px;padding:6px 16px;font-size:14px}nav button.active,nav button:hover{background:#ffffff26}.page{max-width:1100px;margin:32px auto;padding:0 16px}.card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 1px 4px #00000014}.center{flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:60vh;display:flex}.spinner{border:3px solid #e2e8f0;border-top-color:#1a56db;border-radius:50%;width:36px;height:36px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.form-group{flex-direction:column;gap:6px;margin-bottom:16px;display:flex}label{color:#374151;font-size:14px;font-weight:600}input[type=text],input[type=date]{border:1px solid #d1d5db;border-radius:8px;outline:none;padding:10px 12px;font-size:15px;transition:border-color .15s}input:focus{border-color:#1a56db;box-shadow:0 0 0 3px #1a56db1a}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;padding:10px 20px;font-size:14px;font-weight:600;transition:opacity .15s,transform .1s;display:inline-flex}.btn:active{transform:scale(.97)}.btn-primary{color:#fff;background:#1a56db}.btn-primary:hover{background:#1d4ed8}.btn-danger{color:#fff;background:#ef4444}.btn-danger:hover{background:#dc2626}.btn-sm{padding:5px 12px;font-size:12px}.btn:disabled{opacity:.5;cursor:not-allowed}.grid-header{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px;display:flex}.grid-header h2{margin-right:auto;font-size:20px;font-weight:700}.date-nav{align-items:center;gap:8px;display:flex}.date-nav button{cursor:pointer;background:#fff;border:1px solid #d1d5db;border-radius:6px;padding:6px 10px;font-size:16px}.date-nav button:hover{background:#f3f4f6}.date-display{text-align:center;min-width:140px;font-size:15px;font-weight:600}.grid-wrap{overflow-x:auto}.booking-grid{border-collapse:separate;border-spacing:3px;width:100%}.booking-grid th{color:#3730a3;text-align:center;background:#e0e7ff;border-radius:6px;min-width:120px;padding:10px 8px;font-size:13px;font-weight:700}.booking-grid th.time-col{color:#64748b;background:#f1f5f9;min-width:70px}.booking-grid td{padding:0}.slot{cursor:default;border-radius:6px;justify-content:center;align-items:center;height:42px;font-size:12px;font-weight:600;transition:filter .1s;display:flex}.slot-time{color:#94a3b8;background:0 0;font-size:12px}.slot-free{color:#065f46;cursor:pointer;background:#d1fae5;border:1px solid #a7f3d0}.slot-free:hover{filter:brightness(.93)}.slot-mine{color:#1e40af;cursor:pointer;background:#dbeafe;border:1px solid #93c5fd;flex-direction:column;gap:2px}.slot-mine:hover{filter:brightness(.95)}.slot-taken{color:#991b1b;background:#fee2e2;border:1px solid #fca5a5}.legend{flex-wrap:wrap;gap:16px;margin-top:12px;font-size:13px;display:flex}.legend-item{align-items:center;gap:6px;display:flex}.legend-dot{border-radius:4px;width:14px;height:14px}.bookings-list{flex-direction:column;gap:10px;display:flex}.booking-item{background:#fafafa;border:1px solid #e5e7eb;border-radius:10px;align-items:center;gap:16px;padding:14px 16px;display:flex}.booking-item:hover{background:#f3f4f6}.booking-court{min-width:80px;font-size:15px;font-weight:700}.booking-date{color:#374151;font-size:14px}.booking-time{color:#6b7280;min-width:120px;font-size:14px}.booking-item .spacer{flex:1}.error-banner{color:#991b1b;background:#fef2f2;border:1px solid #fca5a5;border-radius:8px;margin-bottom:16px;padding:10px 14px;font-size:14px}.user-chip{color:#fff;background:#ffffff26;border-radius:20px;padding:4px 10px;font-size:13px}