:root {
  --color-fondo: #f2f4f8;
  --color-texto: #333;
  --color-primario: #093b6e;
  --color-primario-hover: #004f99;
  --color-header: #004080;
  --color-header-claro: #0066cc;
  --color-blanco: #ffffff;
  --color-sombra: rgba(0, 0, 0, 0.1);
  --color-rojo: #cc0000;
  --color-rojo-hover: #a60000;
}

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

/* Estilos generales del sistema */
body, html {
  height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--color-fondo);
  color: var(--color-texto);
}

/* Estructura principal del panel */
.panel-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  display: flex;
  overflow: hidden;
}

aside {
  width: 250px;
  background-color: #f8f9fa;
  padding: 1rem;
  border-right: 1px solid #dee2e6;
}

section {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

.vista {
  display: none;
}

.tarjeta-personalizada {
  background-color: var(--color-blanco);
  border-radius: 10px;
  box-shadow: 0 0 10px var(--color-sombra);
  padding: 1.5rem;
}

/* Header y footer */
header {
  background: linear-gradient(to right, var(--color-header), var(--color-header-claro));
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #eaeaea;
  color: #666;
  border-top: 1px solid #ccc;
}

/* Botones */
.btn {
  display: inline-block;
  padding: 12px;
  background-color: var(--color-primario);
  color: white;
  text-decoration: none;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: var(--color-primario-hover);
}

.btn-cerrar {
  background-color: var(--color-rojo);
}

.btn-cerrar:hover {
  background-color: var(--color-rojo-hover);
}

/* Formularios */
.formulario {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.campo {
  text-align: left;
}

.campo label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--color-texto);
}

.campo input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

/* Enlaces secundarios */
.enlaces-secundarios {
  margin-top: 20px;
  font-size: 0.9rem;
}

.enlaces-secundarios a {
  color: var(--color-primario);
  text-decoration: none;
}

.enlaces-secundarios a:hover {
  text-decoration: underline;
}

/* Enlace de regreso al inicio */
.volver-inicio {
  display: block;
  margin: 20px auto 0;
  text-align: center;
  color: var(--color-texto);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.volver-inicio:hover {
  text-decoration: underline;
}

/* Reenvío de activación */
.form-extra {
  margin-top: 30px;
  text-align: center;
}

.form-extra input[type="email"] {
  padding: 8px;
  width: 250px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.form-extra button {
  padding: 8px 16px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 0.95rem;
  cursor: pointer;
}

.form-extra button:hover {
  background-color: #0056b3;
}

/* Tarjetas de panel */
.panel-header {
  background: linear-gradient(to right, var(--color-header), var(--color-header-claro));
  color: white;
  padding: 20px;
  text-align: center;
  border-radius: 8px 8px 0 0;
}

.panel-card {
  background-color: white;
  border-radius: 0 0 8px 8px;
  padding: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
}

.panel-card p {
  font-size: 1.2rem;
  margin-bottom: 20px;
}

.icono-usuario {
  font-size: 3rem;
  color: var(--color-header);
  margin-bottom: 10px;
}
.pantalla-centrada {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--color-fondo);
  color: #333;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.contenedor-centrado {
  text-align: center;
  padding: 40px;
  background-color: var(--color-blanco);
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
  width: 90%;
  max-width: 400px;
}
.botonera {
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.titulo-sistema {
  font-size: 2rem;
  margin-bottom: 30px;
  color: #004080;
}

/* En auditoria me recomendaron esto: */

/* Tablas básicas */
.tabla {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.tabla th,
.tabla td {
  padding: 12px;
  border: 1px solid #ddd;
  text-align: left;
}

.tabla th {
  background-color: #f2f2f2;
  font-weight: bold;
}

.tabla tr:nth-child(even) {
  background-color: #f9f9f9;
}

/* Alertas */
.alerta-error {
  background-color: #ffe6e6;
  color: #cc0000;
  border: 1px solid #cc0000;
  padding: 10px;
  margin-bottom: 15px;
  border-radius: 5px;
  font-size: 0.95rem;
}

.alerta-exito {
  background-color: #e6ffe6;
  color: #006600;
  border: 1px solid #006600;
  padding: 10px;
  margin-bottom: 15px;
  border-radius: 5px;
  font-size: 0.95rem;
}

.panel-container aside button {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  text-align: left;
  padding-left: 12px;
  width: 100%;
}

aside button span.estado-icono {
  flex-shrink: 0;
}
aside button.activo {
  background-color: #d4edda;
  border-left: 5px solid green;
  font-weight: bold;
  color: #000;
}

/* responsivo */

@media (max-width: 768px) {
  aside {
    display: none; /* Oculta menú lateral en móviles */
  }

  .main-content {
    flex-direction: column;
    padding: 1rem;
  }

  section {
    padding: 1rem;
  }

  .panel-card {
    padding: 20px;
    width: 100%;
    box-shadow: none;
  }

  .contenedor-centrado {
    width: 95%;
    padding: 20px;
  }

  .formulario {
    gap: 15px;
  }

  .formulario input,
  .form-extra input[type="email"] {
    font-size: 1rem;
    padding: 10px;
  }

  .form-extra {
    padding: 0 10px;
  }

  .btn,
  .form-extra button {
    font-size: 1rem;
    padding: 10px;
  }

  .tabla th, .tabla td {
    font-size: 0.9rem;
    padding: 8px;
  }

  .tabla {
    display: block;
    overflow-x: auto;
    width: 100%;
  }

  .pantalla-centrada {
    padding: 10px;
  }

  .titulo-sistema {
    font-size: 1.5rem;
  }

  .botonera {
    flex-direction: column;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  html, body {
    font-size: 15px;
  }

  .formulario {
    gap: 15px;
  }

  .campo label {
    font-size: 1rem;
  }

  .campo input {
    font-size: 1rem;
    padding: 10px;
  }

  .btn {
    font-size: 1rem;
    padding: 10px;
    width: 100%;
  }

  .form-extra input[type="email"],
  .form-extra button {
    width: 100%;
    box-sizing: border-box;
  }

  .contenedor-centrado {
    padding: 20px;
    width: 100%;
    max-width: none;
    border-radius: 0;
    box-shadow: none;
  }

  .pantalla-centrada {
    padding: 10px;
    align-items: start;
  }

  .titulo-sistema {
    font-size: 1.4rem;
    margin-bottom: 20px;
  }

  .alerta-error,
  .alerta-exito {
    font-size: 0.95rem;
    padding: 10px;
  }
}