:root{--primary:#0d6efd;--dark:#212529;--light:#f8f9fa;--success:#28a745;--danger:#dc3545}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;line-height:1.6;color:var(--dark);background:var(--light)}
.container{max-width:1200px;margin:0 auto;padding:1rem}
.navbar{background:var(--primary);color:#fff;padding:1rem 0;box-shadow:0 2px 4px rgba(0,0,0,.1)}
.navbar .container{display:flex;justify-content:space-between;align-items:center}
.navbar .brand{font-size:1.5rem;font-weight:bold;color:#fff;text-decoration:none}
.navbar nav{display:flex;gap:1rem;align-items:center}
.navbar nav a{color:#fff;text-decoration:none;padding:.5rem 1rem;border-radius:4px;transition:background .2s}
.navbar nav a:hover{background:rgba(255,255,255,.1)}
.user-badge{background:rgba(255,255,255,.2);padding:.3rem .8rem;border-radius:20px;font-size:.9rem}
main{min-height:calc(100vh - 200px);padding:2rem 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin:2rem 0}
.card{background:#fff;border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px rgba(0,0,0,.1);transition:transform .2s}
.card:hover{transform:translateY(-2px)}
.card h3{margin-bottom:.5rem;color:var(--dark)}
.stat-icon{font-size:3rem;margin-bottom:.5rem}
.stat-number{font-size:2.5rem;font-weight:bold;color:var(--primary);margin:.5rem 0}
.btn{display:inline-block;padding:.5rem 1.5rem;background:var(--primary);color:#fff;text-decoration:none;border-radius:4px;border:none;cursor:pointer;transition:background .2s}
.btn:hover{background:#0b5ed7}
.btn-sm{padding:.3rem .8rem;font-size:.9rem}
.btn-block{display:block;width:100%}
.btn-danger{background:var(--danger)}
.btn-danger:hover{background:#c82333}
.form-control{width:100%;padding:.5rem;border:1px solid #ced4da;border-radius:4px;font-size:1rem}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(13,110,253,.1)}
.form-group{margin-bottom:1rem}
.form-group label{display:block;margin-bottom:.5rem;font-weight:500}
.input-row{display:flex;gap:.5rem;flex-wrap:wrap}
.mb-3{margin-bottom:1rem}
.alert{padding:1rem;margin:1rem 0;border-radius:4px;border-left:4px solid}
.alert-error{background:#f8d7da;color:#721c24;border-color:var(--danger)}
.alert-success{background:#d4edda;color:#155724;border-color:var(--success)}
.alert-info{background:#d1ecf1;color:#0c5460;border-color:#17a2b8}
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden}
.table th,.table td{padding:.8rem;text-align:left;border-bottom:1px solid #dee2e6}
.table th{background:var(--light);font-weight:600}
.login-page{background:linear-gradient(135deg,var(--primary) 0%,#0b5ed7 100%);min-height:100vh;display:flex;align-items:center;justify-content:center}
.login-container{width:100%;max-width:400px;padding:1rem}
.login-card{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 4px 20px rgba(0,0,0,.2)}
.login-card h1{text-align:center;margin-bottom:.5rem;color:var(--primary)}
.login-card p{text-align:center;color:#6c757d;margin-bottom:1.5rem}
footer{background:var(--dark);color:#fff;padding:2rem 0;margin-top:3rem;text-align:center}
footer a{color:#fff;text-decoration:none}
@media(max-width:768px){.navbar .container{flex-direction:column;gap:1rem}.grid{grid-template-columns:1fr}}