:root{--primary:#2c3a5e;--bg:#f2f4f8;--card:#fff;--text:#2b2b2b;--muted:#767676;--acento:#e0a030;}
*{box-sizing:border-box;}
body{margin:0;font-family:'Segoe UI',Arial,sans-serif;background:var(--bg);color:var(--text);}
.topbar{background:var(--primary);color:#fff;padding:14px 20px;font-weight:600;display:flex;align-items:center;gap:12px;}
.topbar-logo{height:36px;width:auto;object-fit:contain;}
.container{max-width:1000px;margin:0 auto;padding:24px 16px;}
.card{background:var(--card);border-radius:10px;padding:24px;box-shadow:0 2px 8px rgba(0,0,0,.08);margin-bottom:16px;}
.login-card{max-width:420px;margin:60px auto;}
.muted{color:var(--muted);}
.small{font-size:.85rem;}
label{display:block;margin-top:12px;font-weight:600;font-size:.9rem;}
input[type=text],input[type=password]{width:100%;padding:10px;border:1px solid #ccc;border-radius:6px;margin-top:4px;font-size:1rem;}
.btn{display:inline-block;background:var(--primary);color:#fff;border:none;padding:10px 18px;border-radius:6px;text-decoration:none;cursor:pointer;font-size:1rem;}
.btn-primary{width:100%;margin-top:18px;}
.btn-large{font-size:1.1rem;padding:14px;}
.btn-sm{padding:6px 12px;font-size:.85rem;}
.alert{padding:10px 14px;border-radius:6px;margin-bottom:12px;}
.alert-danger{background:#f8d7da;color:#842029;}
.alert-warning{background:#fff3cd;color:#664d03;}
.grid-listas{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:20px 0;}
.card-lista{background:var(--card);border:2px solid transparent;border-radius:10px;padding:16px;cursor:pointer;box-shadow:0 2px 6px rgba(0,0,0,.08);display:block;transition:.15s;}
.card-lista:has(input:checked){border-color:var(--primary);background:#eef1f7;}
.card-lista img{width:100%;border-radius:8px;margin-bottom:8px;object-fit:cover;aspect-ratio:4/3;}
.card-lista input{margin-bottom:8px;}
.card-blanco,.card-nulo{display:flex;flex-direction:column;justify-content:center;text-align:center;}
.admin-header{display:flex;justify-content:space-between;align-items:center;}
.stats-row{display:flex;gap:16px;margin:16px 0;}
.stat-box{flex:1;background:var(--card);border-radius:10px;padding:18px;text-align:center;box-shadow:0 2px 6px rgba(0,0,0,.08);}
.stat-box span{font-size:2rem;font-weight:700;display:block;color:var(--primary);}
.ganador-box{background:#eef1f7;border:1px solid var(--primary);}
.barra-resultado{margin-bottom:10px;}
.barra-label{font-size:.9rem;margin-bottom:4px;}
.barra-fondo{background:#e6e6e6;border-radius:6px;height:18px;overflow:hidden;}
.barra-fill{background:var(--primary);height:100%;transition:width .4s;}
.tabla-verificacion{width:100%;border-collapse:collapse;margin-top:10px;background:var(--card);}
.tabla-verificacion th,.tabla-verificacion td{padding:8px 10px;border-bottom:1px solid #eee;text-align:left;font-size:.9rem;}
.input-buscar{width:100%;padding:10px;border:1px solid #ccc;border-radius:6px;margin-top:10px;}
.admin-nav{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:20px;}
.admin-nav a{background:#fff;color:var(--text);padding:8px 14px;border-radius:6px;text-decoration:none;font-size:.9rem;box-shadow:0 1px 4px rgba(0,0,0,.08);}
.admin-nav a:hover{background:var(--primary);color:#fff;}
.admin-nav-logout{margin-left:auto;}