:root {
  --azul: #1e40af;
  --azul-oscuro: #1e3a8a;
  --fondo: #f8fafc;
  --texto: #1e293b;
  --texto-suave: #64748b;
  --borde: #e2e8f0;
  --verde: #2e7d32;
  --rojo: #b91c1c;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, "Segoe UI", Arial, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  margin: 0;
  min-height: 100vh;
}

.contenedor-centro {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.tarjeta {
  background: #fff;
  border: 1px solid var(--borde);
  border-radius: 16px;
  padding: 36px;
  max-width: 460px;
  width: 100%;
  box-shadow: 0 8px 30px rgba(30, 64, 175, 0.08);
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.marca .punto {
  width: 12px; height: 12px; border-radius: 50%; background: var(--azul);
}
.marca span {
  font-weight: 700; font-size: 1.05rem; color: var(--azul-oscuro); letter-spacing: 0.2px;
}

h1 { font-size: 1.3rem; margin: 0 0 6px; color: var(--texto); }
h2 { font-size: 1.05rem; margin: 0 0 14px; color: var(--texto); }
p.subtitulo { color: var(--texto-suave); font-size: 0.92rem; margin: 0 0 24px; }

label {
  display: block;
  font-size: 0.85rem;
  color: var(--texto-suave);
  margin: 14px 0 6px;
  font-weight: 600;
}

input, select, textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--borde);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--texto);
  background: #fff;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--azul);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.12);
}
textarea { resize: vertical; min-height: 80px; }

.fila { display: flex; gap: 12px; }
.fila > div { flex: 1; }

.checkbox-linea {
  display: flex; align-items: flex-start; gap: 10px; margin-top: 16px;
  padding: 14px; background: var(--fondo); border-radius: 10px; border: 1px solid var(--borde);
}
.checkbox-linea input { width: auto; margin-top: 3px; }
.checkbox-linea .precio { color: var(--azul); font-weight: 700; }

button.principal {
  width: 100%;
  padding: 13px;
  margin-top: 22px;
  background: var(--azul);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
}
button.principal:hover { background: var(--azul-oscuro); }
button.principal:disabled { background: #94a3b8; cursor: not-allowed; }

button.secundario {
  padding: 9px 16px;
  background: #fff;
  color: var(--azul);
  border: 1px solid var(--azul);
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
}

.mensaje-error {
  color: var(--rojo);
  font-size: 0.85rem;
  margin-top: 10px;
  display: none;
}
.mensaje-ok {
  color: var(--verde);
  font-size: 0.85rem;
  margin-top: 10px;
  display: none;
}

.aviso-preview {
  background: #fffbeb; border: 1px solid #fde68a; border-radius: 10px;
  padding: 12px 14px; font-size: 0.82rem; color: #92400e; margin: 4px 0 20px;
}

.tarjeta-visual {
  background: linear-gradient(135deg, var(--azul-oscuro), var(--azul), #3b82f6);
  border-radius: 14px; padding: 20px 22px; color: #fff; margin-bottom: 20px;
  box-shadow: 0 10px 24px -10px rgba(30,64,175,0.5);
}
.tarjeta-visual .chip {
  width: 34px; height: 24px; border-radius: 5px;
  background: linear-gradient(135deg, #fde68a, #fbbf24); margin-bottom: 18px;
}
.tarjeta-visual .numero-tarjeta { font-size: 1.15rem; letter-spacing: 2px; font-weight: 600; margin-bottom: 16px; }
.tarjeta-visual .fila-tarjeta { display: flex; justify-content: space-between; font-size: 0.78rem; opacity: 0.9; letter-spacing: 0.5px; }

.resumen-precio {
  margin-top: 18px;
  padding: 14px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.resumen-precio .total { font-size: 1.3rem; font-weight: 700; color: var(--azul-oscuro); }

/* Panel del centro */
.layout-panel { display: flex; min-height: 100vh; }
.barra-lateral {
  width: 220px; background: #fff; border-right: 1px solid var(--borde);
  padding: 24px 0; flex-shrink: 0;
}
.barra-lateral .marca { padding: 0 20px; }
.pestana {
  display: block; width: 100%; text-align: left; padding: 12px 20px;
  border: none; background: none; font-size: 0.92rem; color: var(--texto-suave);
  cursor: pointer; font-weight: 500; border-left: 3px solid transparent;
}
.pestana:hover { background: var(--fondo); }
.pestana.activa { color: var(--azul); border-left-color: var(--azul); background: #eff6ff; font-weight: 700; }

.contenido-panel { flex: 1; padding: 40px; max-width: 720px; }
.seccion-panel { display: none; }
.seccion-panel.activa { display: block; }

.badge-estado {
  display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.78rem; font-weight: 700;
}
.badge-estado.activo { background: #dcfce7; color: var(--verde); }
.badge-estado.inactivo { background: #fee2e2; color: var(--rojo); }