:root{--primary-color:#1a1a1a;--secondary-color:#2d2d2d;--accent-color:#007bff;--success-color:#28a745;--error-color:#dc3545;--background-color:#f8f9fa;--card-bg:#fff;--text-color:#333}*{box-sizing:border-box}body{background-color:var(--background-color);color:var(--text-color);margin:0;font-family:Inter,sans-serif;line-height:1.5}.navbar{background-color:var(--primary-color);z-index:1000;justify-content:space-between;align-items:center;padding:.8rem 1rem;display:flex;position:sticky;top:0;box-shadow:0 4px 12px #0000001a}.navbar-brand{color:#fff;font-size:1.3rem;font-weight:700;text-decoration:none}.navbar-links{gap:1rem;display:flex}.navbar-links a{color:#ccc;font-size:.9rem;font-weight:500;text-decoration:none;transition:all .3s}.navbar-links a:hover{color:#fff}.container{width:100%;max-width:1200px;margin:1.5rem auto;padding:0 1rem}.card{background:var(--card-bg);border-radius:12px;width:100%;max-width:450px;max-height:90vh;margin:1rem auto;padding:1.5rem;overflow-y:auto;box-shadow:0 4px 12px #0000000d}h2{text-align:center;margin-bottom:1rem;font-size:1.4rem}.form-group{margin-bottom:.8rem}label{margin-bottom:.3rem;font-size:.85rem;font-weight:500;display:block}input{border:1px solid #ddd;border-radius:6px;width:100%;padding:.6rem;font-size:.9rem}button{background-color:var(--accent-color);color:#fff;cursor:pointer;border:none;border-radius:6px;width:100%;padding:.65rem;font-size:.95rem;font-weight:600;transition:all .2s}button:hover{opacity:.9}.btn-secondary{background-color:#6c757d}.btn-success{background-color:var(--success-color)}.btn-error{background-color:var(--error-color)}.dashboard-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;display:grid}.stat-card{text-align:center;color:inherit;background:#fff;border-radius:10px;padding:1.5rem;text-decoration:none;transition:all .2s;box-shadow:0 2px 8px #0000000a}.stat-card:hover{transform:translateY(-3px)}.page-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}.search-bar{flex:1;min-width:250px}.table-container{background:#fff;border-radius:8px;overflow-x:auto;box-shadow:0 2px 10px #00000008}table{border-collapse:collapse;width:100%;min-width:600px}th,td{text-align:left;border-bottom:1px solid #eee;padding:.8rem 1rem;font-size:.9rem}th{background-color:#fafafa;font-weight:600}.alert{text-align:center;border-radius:6px;margin-bottom:1rem;padding:.7rem;font-size:.85rem}.alert-success{color:#155724;background-color:#d4edda}.alert-error{color:#721c24;background-color:#f8d7da}.loading-container{flex-direction:column;justify-content:center;align-items:center;height:100vh;display:flex}.spinner{border:3px solid #f3f3f3;border-top:3px solid var(--accent-color);border-radius:50%;width:30px;height:30px;margin-bottom:.5rem;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=600px){.navbar{padding:.8rem}.navbar-brand{font-size:1.1rem}.navbar-links{gap:.6rem}.navbar-links a{font-size:.8rem}.container{margin:1rem auto}.card{padding:1rem}h2{font-size:1.2rem}}