*{box-sizing:border-box}
body{margin:0;background:#f4f7fb;font-family:Inter,sans-serif;color:#243447}
header{background:#1e3a5f;color:#fff;padding:18px 0;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.wrap{width:min(1100px,92%);margin:auto}
.brand{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.brand h1{margin:0;font-size:22px}
.brand a{color:#fff}

/* ---- admin top nav ---- */
.adminnav{background:#16304d}
.adminnav .wrap{display:flex;gap:4px;flex-wrap:wrap}
.adminnav a{color:#cfe0f4;text-decoration:none;padding:12px 14px;font-size:14px;font-weight:600;display:inline-block}
.adminnav a:hover{background:#1e3a5f;color:#fff}
.adminnav a.adminnav-right{margin-left:auto}

.main-content{padding-bottom:20px}

.hero{background:white;border-radius:12px;padding:35px;margin:30px auto;box-shadow:0 4px 15px rgba(0,0,0,.08)}
.hero h2{text-align:center;margin:5px 0;color:#1e3a5f}
.hero h3{text-align:center;color:#3b7f5a;margin-top:0}
.subtitle{text-align:center;color:#667085;max-width:750px;margin:auto}

.form{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:30px}
.form .full{grid-column:1/-1}
label{font-weight:600;display:block;margin-bottom:6px}
input,select,textarea{width:100%;padding:12px;border:1px solid #d0d7e2;border-radius:8px;font-family:inherit;font-size:15px}
textarea{resize:vertical}

button,.btn{background:#1e3a5f;color:#fff;border:none;padding:12px 26px;border-radius:8px;font-size:15px;cursor:pointer;text-decoration:none;display:inline-block}
button:hover,.btn:hover{background:#294d7d}
.btn-secondary{background:#667085}
.btn-secondary:hover{background:#4b5563}
.btn-danger{background:#b3413e}
.btn-danger:hover{background:#8f302d}
.btn-sm{padding:6px 14px;font-size:13px}

.section{display:none}
.card{background:white;border-radius:12px;padding:22px;margin:18px 0;box-shadow:0 3px 12px rgba(0,0,0,.06)}
.progress{height:10px;background:#dde5ef;border-radius:20px;overflow:hidden;margin:15px 0}
.bar{height:100%;width:0;background:#3b7f5a}
footer{text-align:center;padding:25px;color:#7b8794}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.metric{font-size:48px;font-weight:700;color:#1e3a5f}
.traffic{font-size:72px}

@media (max-width:640px){
  .form,.result-grid{grid-template-columns:1fr}
}

/* ---- selector curso/caso ---- */
.selector-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;margin-top:20px}
.selector-card{background:white;border:1px solid #dde5ef;border-radius:10px;padding:18px;text-decoration:none;color:#243447;transition:box-shadow .15s,border-color .15s}
.selector-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.1);border-color:#1e3a5f}
.selector-card h4{margin:0 0 6px;color:#1e3a5f}
.selector-card p{margin:0;font-size:13px;color:#667085}

/* ---- alerts ---- */
.alert{padding:14px 18px;border-radius:8px;margin-bottom:18px;font-weight:600}
.alert-ok{background:#e5f3ea;color:#1f6b3f;border:1px solid #bfe3cc}
.alert-error{background:#fbe9e8;color:#96322f;border:1px solid #f2c2bf}

/* ---- tables (admin) ---- */
table{width:100%;border-collapse:collapse;background:#fff}
table th,table td{text-align:left;padding:10px 12px;border-bottom:1px solid #e6ebf2;font-size:14px}
table th{background:#f0f4f9;color:#1e3a5f;font-weight:700}
table tr:hover td{background:#f8fafc}
.table-actions{display:flex;gap:8px;flex-wrap:wrap}

.toolbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:14px}

.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}
.badge-green{background:#e5f3ea;color:#1f6b3f}
.badge-yellow{background:#fdf3d8;color:#8a6b12}
.badge-orange{background:#fce6d6;color:#9a4c14}
.badge-red{background:#fbe9e8;color:#96322f}
.badge-grey{background:#eef1f5;color:#5a6472}

.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin:18px 0}
.stat-box{background:#fff;border-radius:10px;padding:18px;box-shadow:0 3px 12px rgba(0,0,0,.06);text-align:center}
.stat-box .num{font-size:30px;font-weight:700;color:#1e3a5f}
.stat-box .label{font-size:13px;color:#667085;margin-top:4px}

.bar-mini{height:8px;background:#dde5ef;border-radius:20px;overflow:hidden}
.bar-mini > span{display:block;height:100%;background:#3b7f5a}

.helptext{font-size:13px;color:#667085;margin-top:4px}
.muted{color:#98a2b3}