:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--border-color: #e5e7eb;--bg-light: #f9fafb;--text-dark: #1f2937;--text-gray: #6b7280}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:#fff;color:var(--text-dark);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:20px}.header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem 0;margin-bottom:2rem;box-shadow:0 4px 6px #0000001a}.header h1{font-size:2rem;font-weight:700;margin-bottom:.5rem}.header p{opacity:.9;font-size:1.1rem}.nav-tabs{display:flex;gap:1rem;margin-bottom:2rem;border-bottom:2px solid var(--border-color);padding-bottom:0}.nav-tab{padding:.75rem 1.5rem;background:none;border:none;cursor:pointer;font-size:1rem;font-weight:500;color:var(--text-gray);border-bottom:3px solid transparent;transition:all .3s ease;position:relative;bottom:-2px}.nav-tab:hover{color:var(--primary-color)}.nav-tab.active{color:var(--primary-color);border-bottom-color:var(--primary-color)}.card{background:#fff;border-radius:12px;padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 1px 3px #0000001a;border:1px solid var(--border-color)}.card h2{font-size:1.5rem;margin-bottom:1rem;color:var(--text-dark)}.card h3{font-size:1.25rem;margin-bottom:.75rem;color:var(--text-dark)}.rooms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-top:1rem}.room-card{background:#fff;border:2px solid var(--border-color);border-radius:12px;padding:1.5rem;transition:all .3s ease;cursor:pointer}.room-card:hover{border-color:var(--primary-color);transform:translateY(-2px);box-shadow:0 4px 12px #2563eb26}.room-card h3{color:var(--primary-color);margin-bottom:.75rem}.room-info{display:flex;flex-direction:column;gap:.5rem}.room-info-item{display:flex;justify-content:space-between;align-items:center;font-size:.95rem}.room-info-label{color:var(--text-gray)}.room-info-value{font-weight:600;color:var(--text-dark)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-dark)}.form-group input,.form-group select{width:100%;padding:.75rem;border:2px solid var(--border-color);border-radius:8px;font-size:1rem;transition:border-color .3s ease}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--primary-color)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.btn{padding:.75rem 1.5rem;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #2563eb4d}.btn-danger{background-color:var(--danger-color);color:#fff;padding:.5rem 1rem;font-size:.9rem}.btn-danger:hover{background-color:#dc2626}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.alert{padding:1rem;border-radius:8px;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.alert-success{background-color:#d1fae5;color:#065f46;border:1px solid #10b981}.alert-error{background-color:#fee2e2;color:#991b1b;border:1px solid #ef4444}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse;margin-top:1rem}thead{background-color:var(--bg-light)}th{padding:1rem;text-align:left;font-weight:600;color:var(--text-dark);border-bottom:2px solid var(--border-color)}td{padding:1rem;border-bottom:1px solid var(--border-color)}tr:hover{background-color:var(--bg-light)}.badge{display:inline-block;padding:.25rem .75rem;border-radius:9999px;font-size:.875rem;font-weight:500}.badge-confirmed{background-color:#d1fae5;color:#065f46}.badge-cancelled{background-color:#fee2e2;color:#991b1b}.loading{text-align:center;padding:2rem;color:var(--text-gray)}.empty-state{text-align:center;padding:3rem;color:var(--text-gray)}.empty-state h3{margin-bottom:.5rem}@media (max-width: 768px){.form-row,.rooms-grid{grid-template-columns:1fr}.nav-tabs{overflow-x:auto}table{font-size:.875rem}th,td{padding:.75rem .5rem}}