/* ===========================
   RESET BÁSICO
=========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f6f9;
  color: #333;
  height: 100vh;
}

/* ===========================
   GRID PRINCIPAL
=========================== */
.contenedor-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  grid-template-rows: 1fr auto;
  min-height: 100vh;
}

/* ===========================
   SIDEBAR
=========================== */
.sidebar {
  grid-row: 1 / 3;
  background-color: #1e1e2f;
  color: #fff;
  padding: 20px 0;
  display: flex;
  flex-direction: column;
}

.logo-container {
  text-align: center;
  margin-bottom: 30px;
}

.logo {
  width: 120px;
  border-radius: 10px;
  filter: drop-shadow(0 0 6px rgba(0, 255, 200, 0.4));
}

/* ===========================
   MENÚ LATERAL
=========================== */
.nav-menu {
  list-style: none;
  padding: 0;
}

.nav-menu li {
  margin: 8px 0;
}

.nav-menu a {
  display: block;
  padding: 12px 24px;
  color: #cfd3ff;
  text-decoration: none;
  font-weight: 500;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}

.nav-menu a:hover {
  background-color: #2b2b45;
  color: #ffffff;
}

.user-info {
  padding: 10px;
  font-size: 0.9em;
  color: #aaa;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===========================
   CONTENIDO PRINCIPAL
=========================== */
.content-area {
  padding: 30px;
  background-color: #f4f6f9;
}

/* ===========================
   FOOTER
=========================== */
.app-footer {
  background-color: #ffffff;
  padding: 12px 20px;
  text-align: center;
  font-size: 0.9rem;
  border-top: 1px solid #ddd;
}

/* ===========================
   RESPONSIVE BÁSICO
=========================== */
@media (max-width: 768px) {
  .contenedor-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }

  .sidebar {
    grid-row: auto;
    flex-direction: row;
    align-items: center;
    padding: 10px;
  }

  .logo-container {
    margin-bottom: 0;
    margin-right: 20px;
  }

  .nav-menu {
    display: flex;
    flex-wrap: wrap;
  }

  .nav-menu a {
    padding: 10px 14px;
    font-size: 0.9rem;
  }
}