:root{
  --azul:#2563EB;
  --azul-oscuro:#1D4ED8;
  --fondo:#F4F6FA;
  --superficie:#FFFFFF;
  --texto:#1E2432;
  --gris:#667085;
  --borde:#E3E6EE;
  --verde:#16A34A;
  --rojo:#DC2626;
  --amarillo:#D97706;
  --radius:12px;
  --shadow:0 8px 24px rgba(20,25,40,.07);
}
*{box-sizing:border-box;}
body{margin:0;background:var(--fondo);color:var(--texto);font-family:'Segoe UI',Inter,Arial,sans-serif;font-size:15px;line-height:1.5;}
a{color:var(--azul);text-decoration:none;}
a:hover{text-decoration:underline;}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px;}

header.site{background:var(--superficie);border-bottom:1px solid var(--borde);}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;max-width:1080px;margin:0 auto;}
.brand{font-weight:700;font-size:19px;color:var(--texto);}
.brand span{color:var(--azul);}
.nav-links{display:flex;gap:16px;align-items:center;font-size:14px;}

.btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;transition:opacity .15s ease;}
.btn:hover{opacity:.88;}
.btn-primary{background:var(--azul);color:#fff;}
.btn-outline{background:#fff;border-color:var(--borde);color:var(--texto);}
.btn-danger{background:var(--rojo);color:#fff;}
.btn-sm{padding:6px 12px;font-size:12.5px;}

.page-head{padding:34px 0 20px;}
.page-head h1{margin:0 0 6px;font-size:26px;}
.page-head p{margin:0;color:var(--gris);font-size:14.5px;}

.card{background:var(--superficie);border:1px solid var(--borde);border-radius:var(--radius);box-shadow:var(--shadow);}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between;margin-bottom:20px;}
.filters{display:flex;gap:10px;flex-wrap:wrap;}
.filters select, .filters input{padding:9px 12px;border-radius:8px;border:1px solid var(--borde);font-size:13.5px;background:#fff;}

.offer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:20px 0 40px;}
.offer-card{padding:20px;display:flex;flex-direction:column;gap:8px;}
.offer-card .top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;}
.offer-card h3{margin:0;font-size:17px;}
.offer-card .empresa{color:var(--gris);font-size:13.5px;}
.pill{display:inline-flex;padding:4px 10px;border-radius:999px;font-size:11.5px;font-weight:600;}
.pill-activa{background:#DCFCE7;color:var(--verde);}
.pill-cerrada{background:#FEE2E2;color:var(--rojo);}
.offer-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--gris);margin:4px 0;}
.offer-desc{color:var(--texto);font-size:13.5px;line-height:1.6;margin:4px 0 10px;}
.offer-actions{display:flex;gap:8px;margin-top:auto;}

.empty{padding:70px 20px;text-align:center;color:var(--gris);}

table.admin-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
table.admin-table th, table.admin-table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--borde);font-size:13.5px;}
table.admin-table th{background:#F8F9FC;font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--gris);}
table.admin-table tr:last-child td{border-bottom:none;}
.actions-cell{display:flex;gap:8px;}

.form-card{max-width:720px;margin:0 auto;padding:32px;}
.field{margin-bottom:18px;}
.field label{display:block;font-weight:600;font-size:13.5px;margin-bottom:7px;}
.field input, .field select, .field textarea{width:100%;padding:11px 14px;border:1px solid var(--borde);border-radius:8px;font-size:14px;font-family:inherit;background:#fff;}
.field input:focus, .field select:focus, .field textarea:focus{outline:2px solid var(--azul);outline-offset:1px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field small.hint{display:block;color:var(--gris);font-size:12px;margin-top:5px;}
.field .error{color:var(--rojo);font-size:12.5px;margin-top:5px;}

.flash{padding:13px 18px;border-radius:8px;font-size:14px;margin-bottom:22px;}
.flash-ok{background:#DCFCE7;color:#15803D;border:1px solid #86EFAC;}
.flash-error{background:#FEE2E2;color:#B91C1C;border:1px solid #FCA5A5;}

.login-wrap{max-width:400px;margin:80px auto;padding:36px;}
.login-wrap h1{font-size:22px;margin-top:0;}

footer.site{padding:30px 0;text-align:center;color:var(--gris);font-size:12.5px;}

@media (max-width:720px){
  .offer-grid{grid-template-columns:1fr;}
  .field-row{grid-template-columns:1fr;}
  .nav-links{gap:10px;}
}