:root {
  --color-primary: #2563eb;
  --color-secondary: #1e40af;
  --color-bg: #f1f5f9;
  --color-card: #ffffff;
  --color-text: #0f172a;
  --color-muted: #64748b;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

.header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  padding: 1.25rem 1rem;
}

.demo-banner {
  max-width: 960px;
  margin: 0 auto 0.75rem;
  padding: 0.6rem 1rem;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  justify-content: space-between;
}

.demo-banner.vencido {
  background: rgba(220, 38, 38, 0.35);
}

.demo-banner .btn-contratar {
  background: #fff;
  color: var(--color-primary);
  border: none;
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  width: 64px;
  height: 64px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  padding: 4px;
}

.header h1 {
  margin: 0;
  font-size: 1.35rem;
}

.subtitle {
  margin: 0.15rem 0 0;
  opacity: 0.9;
  font-size: 0.9rem;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

.card {
  background: var(--color-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.card h2, .card h3 {
  margin-top: 0;
}

.hint, .muted {
  color: var(--color-muted);
}

form label {
  display: block;
  margin: 0.75rem 0 0.25rem;
  font-weight: 600;
  font-size: 0.9rem;
}

form input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 1rem;
}

.btn {
  display: inline-block;
  border: none;
  border-radius: 8px;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 1rem;
}

.btn-primary {
  width: 100%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.btn-primary:hover {
  filter: brightness(1.05);
}

.btn-secondary {
  background: #e2e8f0;
  color: var(--color-text);
  width: 100%;
}

.btn-link {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 0.35rem 0.75rem;
  margin-top: 0;
  font-size: 0.85rem;
}

.error {
  color: #b91c1c;
  margin-top: 0.75rem;
}

.success {
  color: #166534;
  margin-top: 0.75rem;
}

.hint a {
  color: var(--color-primary);
}

.hidden {
  display: none !important;
}

.resumen-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
}

.badge.activo { background: #dcfce7; color: #166534; }
.badge.suspendido { background: #fee2e2; color: #991b1b; }
.badge.moroso { background: #ffedd5; color: #9a3412; }
.badge.por-vencer { background: #fef9c3; color: #854d0e; }

.grid-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.stat {
  background: #f8fafc;
  border-radius: 8px;
  padding: 0.75rem;
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.tab {
  flex: 1;
  min-width: 90px;
  border: none;
  background: #e2e8f0;
  padding: 0.6rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

.tab.active {
  background: var(--color-primary);
  color: #fff;
}

.lista-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid #e2e8f0;
}

.lista-item:last-child {
  border-bottom: none;
}

.lista-vacia {
  color: var(--color-muted);
  padding: 0.5rem 0;
}

.footer {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
  padding: 1.5rem 1rem 2rem;
}

@media (min-width: 768px) {
  .header h1 { font-size: 1.6rem; }
  .container { padding: 1.5rem; }
  .card { padding: 1.5rem; }
}