*{box-sizing:border-box;font-family:system-ui,-apple-system,'Segoe UI',sans-serif}
body{margin:0;background:#f4f6f8;color:#222}
.container{max-width:420px;margin:40px auto;background:#fff;padding:24px;border-radius:10px;box-shadow:0 6px 20px rgba(0,0,0,.08)}
h1,h2{text-align:center;margin-bottom:20px;font-weight:600}
form{display:flex;flex-direction:column;gap:12px}
label{font-size:14px;color:#555}
input,select{padding:12px;border-radius:6px;border:1px solid #ccc;font-size:16px}
button{padding:14px;border-radius:8px;border:none;background:#0077ff;color:#fff;font-size:16px;font-weight:600}
button:hover{background:#005fd1}
.error{background:#fdeaea;color:#a40000;padding:10px;border-radius:6px;text-align:center}
.success{background:#e6f9ee;color:#117a43;padding:10px;border-radius:6px;text-align:center}
.pin{font-size:28px;font-weight:700;text-align:center;letter-spacing:4px;background:#000;color:#fff;padding:12px;border-radius:8px}
.card{background:#f8fafc;padding:14px;border-radius:8px;margin-bottom:10px;border-left:4px solid #0077ff}
.footer{text-align:center;margin-top:20px;font-size:12px;color:#777}

/* =========================
   BOTONES DASHBOARD ADMIN
========================= */
.admin-buttons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 24px;
}

/* 2 columnas en pantallas medianas/grandes */
@media (min-width: 640px) {
  .admin-buttons {
    grid-template-columns: 1fr 1fr;
  }
}

.admin-buttons a {
  display: block;
}

.admin-buttons button {
  width: 100%;
  min-height: 70px;
  padding: 16px;
  border-radius: 12px;
  border: none;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  background: #0077ff;
  color: #fff;
  line-height: 1.3;
}

/* Colores */
.admin-buttons button.success {
  background: #28a745;
}

.admin-buttons button.secondary {
  background: #6c757d;
}

.admin-buttons button.warning {
  background: #dc3545;
}

.admin-buttons button:hover {
  opacity: 0.92;
}