:root {
  --azul-uni: #0b2e59;
  --azul-uni-claro: #164a8c;
  --dorado: #c8a24a;
  --gris-bg: #f4f6fa;
  --texto: #1f2937;
  --borde: #e2e6ee;
  --exito: #1f9d55;
  --peligro: #d64545;
}

* { box-sizing: border-box; }

body {
  background: var(--gris-bg);
  color: var(--texto);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ---------------- LOGIN ---------------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
}
.login-imagen {
  flex: 1.2;
  background-size: cover;
  background-position: center;
  position: relative;
}
.login-imagen::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(11,46,89,.85), rgba(11,46,89,.35));
}
.login-imagen .marca {
  position: relative; z-index: 2;
  color: #fff; padding: 48px;
  display: flex; flex-direction: column; justify-content: flex-end; height: 100%;
}
.login-imagen .marca h1 { font-weight: 700; font-size: 2rem; margin-bottom: 4px; }
.login-imagen .marca p { opacity: .85; }

.login-panel {
  flex: 1;
  display: flex; align-items: center; justify-content: center;
  background: #fff;
  padding: 24px;
}
.login-card { width: 100%; max-width: 380px; }
.login-card .logo-chip {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--azul-uni); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.4rem; margin-bottom: 18px;
}
.login-card h2 { font-weight: 700; margin-bottom: 4px; }
.login-card .subt { color: #6b7280; margin-bottom: 28px; }
.login-card .form-control { border-radius: 10px; padding: 12px 14px; border-color: var(--borde); }
.login-card .form-control:focus { border-color: var(--azul-uni-claro); box-shadow: 0 0 0 .2rem rgba(22,74,140,.15); }
.btn-uni {
  background: var(--azul-uni); border: none; color: #fff;
  border-radius: 10px; padding: 12px; font-weight: 600; width: 100%;
  transition: background .15s;
}
.btn-uni:hover { background: var(--azul-uni-claro); color: #fff; }

@media (max-width: 860px) {
  .login-imagen { display: none; }
}

/* ---------------- LAYOUT APP ---------------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 260px; background: var(--azul-uni); color: #fff;
  flex-shrink: 0; display: flex; flex-direction: column;
}
.sidebar .marca { padding: 20px; font-weight: 700; font-size: 1.15rem; border-bottom: 1px solid rgba(255,255,255,.12); }
.sidebar .marca small { display:block; font-weight: 400; opacity:.7; font-size:.75rem; }
.sidebar-menu { flex: 1; overflow-y: auto; padding: 12px 0; }
.sidebar-menu .grupo-titulo {
  padding: 14px 20px 6px; font-size: .72rem; text-transform: uppercase;
  letter-spacing: .06em; opacity: .55;
}
.sidebar-menu a {
  display: block; padding: 10px 20px; color: #dbe4f5; text-decoration: none;
  font-size: .92rem; border-left: 3px solid transparent;
}
.sidebar-menu a:hover, .sidebar-menu a.activo {
  background: rgba(255,255,255,.08); border-left-color: var(--dorado); color: #fff;
}
.sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: .85rem; }
.sidebar-footer a { color: #fff; }

/* ---------------- Acordeon del menu lateral ---------------- */
.sidebar-accordion .accordion-item {
  background: transparent; border: none; border-radius: 0;
}
.sidebar-accordion .accordion-header .accordion-button {
  background: transparent; color: #dbe4f5; font-size: .72rem; text-transform: uppercase;
  letter-spacing: .06em; font-weight: 600; padding: 14px 20px; box-shadow: none; opacity: .7;
}
.sidebar-accordion .accordion-button:not(.collapsed) {
  background: rgba(255,255,255,.06); opacity: 1; color: #fff;
}
.sidebar-accordion .accordion-button:focus { box-shadow: none; }
.sidebar-accordion .accordion-button::after {
  filter: invert(1) brightness(2.2); width: .75rem; height: .75rem; background-size: .75rem;
}
.sidebar-accordion .accordion-body { padding: 4px 0 8px; }
.sidebar-accordion .accordion-collapse { border: none; }

.contenido { flex: 1; min-width: 0; }
.topbar {
  background: #fff; border-bottom: 1px solid var(--borde);
  padding: 14px 24px; display: flex; align-items: center; justify-content: space-between;
}
.topbar h1 { font-size: 1.15rem; font-weight: 700; margin: 0; }
.main-area { padding: 24px; }

.card-panel { background: #fff; border-radius: 14px; border: 1px solid var(--borde); }

/* ---------------- Tabla CRUD ---------------- */
.tabla-crud thead th { background: #f8f9fc; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; color: #6b7280; white-space: nowrap; }
.tabla-crud td { font-size: .88rem; vertical-align: middle; }
.tabla-crud tbody tr:hover { background: #f8fafc; }
.filtros-fila input, .filtros-fila select { font-size: .8rem; padding: 4px 8px; }

.badge-estado-activo { background: #e4f7ea; color: var(--exito); }
.badge-estado-inactivo { background: #fde8e8; color: var(--peligro); }

.dashboard-tarjeta {
  border-radius: 14px; padding: 20px; color: #fff; background: var(--azul-uni);
}
.dashboard-tarjeta.dorado { background: linear-gradient(135deg, var(--dorado), #a9822f); }
.dashboard-tarjeta.claro { background: linear-gradient(135deg, var(--azul-uni-claro), var(--azul-uni)); }