* {
  box-sizing: border-box;
  font-family:
    Arial,
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto;
}
html,
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
}
body {
  margin: 0;
  min-height: 100vh;
  color: #062a56;

  /* Fondo con color fallback */
  background:
    linear-gradient(rgba(0, 0, 0, 0.671), rgba(0, 0, 0, 0.3)),
    url("../../assets/img/fondoprincipal.jpeg");

  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  background-attachment: fixed;
  color: #062a56;
  transition: background-size 0.3s ease;
}

.hidden {
  display: none !important;
}

/* =====================================================
   ESTRUCTURA GENERAL
   ===================================================== */

.layout {
  display: flex;
  min-height: 100vh;
}

.content {
  flex: 1;
  padding: 16px 18px;
}

.brandText {
  min-width: 0;
}

.brand h1 {
  font-size: 14px;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.muted {
  font-size: 13px;
  font-style: inherit;
}

/* Ocultar texto al colapsar */
.sidebar.collapsed .brandText {
  display: none;
}

/* Animación icono toggle */
#sidebarToggleBtn svg {
  transition: transform 0.18s ease;
}

.sidebar.collapsed #sidebarToggleBtn svg {
  transform: rotate(180deg);
}

/* =====================================================
   NAVEGACIÓN
   ===================================================== */

.nav {
  flex: 1;
  overflow: auto;
  padding-top: 4px;
}

.nav h2 {
  font-size: 11px;
  color: var(--accent2);
  margin: 14px 10px 8px;
  letter-spacing: 0.06em;
}

/* Ocultar títulos cuando colapsa */
.sidebar.collapsed .nav h2 {
  display: none;
}

/* Links del menú */
.nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  margin: 6px;
  border-radius: 12px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid transparent;
  position: relative;
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line);
}

.nav a.active {
  background: rgba(79, 124, 255, 0.18);
  border-color: rgba(79, 124, 255, 0.35);
}

/* Iconos */
.nav .ico {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent2);
}

.nav a.active .ico {
  color: var(--text);
}

/* Texto */
.nav .lbl {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Ocultar texto al colapsar */
.sidebar.collapsed .nav .lbl {
  display: none;
}

.sidebar.collapsed .nav a:hover::after {
  opacity: 1;
}

/* =====================================================
   GRID Y CONTENIDO
   ===================================================== */

.grids {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
  width: 100%;
  max-width: 90vw; /* ~90% del ancho de viewport → deja ~5% cada lado */
  margin: 0 auto;
}

.card {
  grid-column: span 3;
  background: #fff;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  box-shadow: var(--shadow);
}

.span-6 {
  grid-column: span 6;
}
.span-12 {
  grid-column: span 12;
}

/* =====================================================
   LOGIN
   ===================================================== */

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

.loginBox {
  width: 420px;
  max-width: 95vw;
  background: var(--panel1);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 10px 0;
}

.err {
  color: #ff7b7b;
  font-size: 12px;
}

/* =====================================================
   SIDEBAR MÓVIL
   ===================================================== */

.sidebarOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
  z-index: 15;
}

.sidebarOverlay.show {
  opacity: 1;
  pointer-events: auto;
}