/* ── WiFi Prepago – Portal Cautivo CSS ────────────────────────── */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 16px;
}

.container {
  width: 100%;
  max-width: 480px;
}

/* ── Header ──────────────────────────────────────────────────── */
.header {
  text-align: center;
  padding: 24px 0 16px;
}

.logo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 12px;
}

.header h1 {
  font-size: 1.5rem;
  font-weight: 700;
}

.subtitle {
  color: var(--text-light);
  margin-top: 4px;
}

/* ── Screens ─────────────────────────────────────────────────── */
.screen { display: none; }
.screen.active { display: block; }

.screen h2 {
  font-size: 1.2rem;
  margin-bottom: 16px;
  text-align: center;
}

/* ── Plans grid ──────────────────────────────────────────────── */
.plans-grid {
  display: grid;
  gap: 12px;
}

.plan-card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: border-color .2s, box-shadow .2s;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.plan-card:hover, .plan-card:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

.plan-name {
  font-weight: 600;
  font-size: 1.1rem;
}

.plan-desc {
  color: var(--text-light);
  font-size: .85rem;
  margin-top: 2px;
}

.plan-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

/* ── Voucher section ─────────────────────────────────────────── */
.voucher-section, .token-section {
  margin-top: 24px;
  text-align: center;
}

.voucher-section p, .token-section p {
  color: var(--text-light);
  font-size: .9rem;
  margin-bottom: 8px;
}

.voucher-input-group {
  display: flex;
  gap: 8px;
}

.voucher-input-group input {
  flex: 1;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-align: center;
}

.voucher-input-group input:focus {
  border-color: var(--primary);
  outline: none;
}

.voucher-display {
  background: var(--card);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-align: center;
  margin-top: 12px;
  color: var(--primary);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  width: 100%;
  margin-top: 12px;
}

.btn-primary:hover { background: var(--primary-dark); }

.btn-secondary {
  background: var(--border);
  color: var(--text);
}

.btn-secondary:hover { background: #cbd5e1; }

.btn-link {
  background: none;
  color: var(--primary);
  text-decoration: underline;
  padding: 8px;
}

/* ── Spinner ─────────────────────────────────────────────────── */
.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 24px auto;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Success / Error icons ───────────────────────────────────── */
.success-icon, .error-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  margin: 24px auto 16px;
  color: #fff;
}

.success-icon { background: var(--success); }
.error-icon { background: var(--danger); }

.connection-info {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  margin: 16px 0;
  box-shadow: var(--shadow);
  text-align: center;
}

.connection-info p { margin: 4px 0; }

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 24px 0;
  color: var(--text-light);
  font-size: .8rem;
}

.small {
  color: var(--text-light);
  font-size: .85rem;
  text-align: center;
  margin-top: 8px;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 400px) {
  .plan-card { flex-direction: column; text-align: center; gap: 8px; }
}