:root{--primary-color:#2563eb;--bg-color:#f8fafc;--text-color:#1e293b;--error-color:#ef4444;--border-radius:8px}body{background-color:var(--bg-color);color:var(--text-color);margin:0;font-family:Inter,system-ui,sans-serif}.app-container{flex-direction:column;align-items:center;min-height:100vh;padding:20px;display:flex}.login-container{border-radius:var(--border-radius);background:#fff;width:100%;max-width:400px;margin-top:10vh;padding:2rem;box-shadow:0 4px 6px -1px #0000001a}.input-group{margin-bottom:1rem}.input-group label{margin-bottom:.5rem;font-weight:500;display:block}input{border-radius:var(--border-radius);box-sizing:border-box;border:1px solid #cbd5e1;width:100%;padding:.75rem}button{background-color:var(--primary-color);color:#fff;border-radius:var(--border-radius);cursor:pointer;border:none;width:100%;padding:.75rem;font-weight:600;transition:opacity .2s}button:disabled{opacity:.5}.table-container{border-radius:var(--border-radius);background:#fff;width:100%;overflow-x:auto;box-shadow:0 1px 3px #0000001a}table{border-collapse:collapse;width:100%;min-width:600px}th,td{text-align:left;border-bottom:1px solid #e2e8f0;padding:12px 15px}th{background-color:#f1f5f9;font-weight:600}@media (width<=600px){.login-container{padding:1.5rem}h1{text-align:center;font-size:1.5rem}}.dashboard-wrapper{min-height:100vh;display:flex}.sidebar{color:#fff;background:#1e293b;flex-direction:column;width:250px;padding:20px;display:flex}.sidebar h2{border-bottom:1px solid #334155;padding-bottom:10px}.sidebar ul{flex-grow:1;padding:0;list-style:none}.sidebar li{cursor:pointer;border-radius:4px;margin-bottom:5px;padding:12px}.sidebar li:hover,.sidebar li.active{background:#334155}.content{background:#f8fafc;flex-grow:1;padding:30px}.add-driver-form{background:#fff;border-radius:8px;margin-top:40px;padding:20px;box-shadow:0 2px 4px #0000001a}.add-driver-form form{flex-wrap:wrap;gap:10px;display:flex}.add-driver-form input,.add-driver-form select{flex:1;min-width:150px}.btn-delete{background:#ef4444;width:auto;margin-left:5px;padding:5px 10px}.btn-edit{background:#f59e0b;width:auto;padding:5px 10px}