/* ───────────────────────────────────────────────────────────
   Estructura: pantalla de acceso, shell con barra lateral y adaptación móvil
   ─────────────────────────────────────────────────────────── */

/* Marca */
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--text); font-family: var(--font-display); font-weight: 600; font-size: 20px; letter-spacing: -.01em; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand .mark { width: 34px; height: 34px; border-radius: 10px; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; }
.brand .mark svg { width: 19px; height: 19px; }

/* Acceso */
.auth { min-height: 100dvh; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.auth-aside { background: var(--ink); color: var(--ink-text); padding: 48px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.auth-aside .brand { color: var(--ink-text); }
.auth-aside .brand .mark { background: rgba(255, 255, 255, .12); color: #fff; }
.auth-aside blockquote { margin: 0; max-width: 24ch; font-family: var(--font-display); font-size: clamp(30px, 3.4vw, 44px); line-height: 1.12; letter-spacing: -.02em; }
.auth-aside blockquote em { font-style: normal; color: #9db3ff; }
.auth-aside .foot { color: var(--ink-muted); font-size: 13px; }
.auth-aside .grid-lines { position: absolute; inset: 0; opacity: .5; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(ellipse at 80% 100%, #000 0%, transparent 70%); -webkit-mask-image: radial-gradient(ellipse at 80% 100%, #000 0%, transparent 70%); }
.auth-aside > * { position: relative; }
.auth-main { display: grid; place-items: center; padding: 32px 20px; }
.auth-card { width: 100%; max-width: 380px; }
.auth-card .brand-mobile { display: none; margin-bottom: 28px; }
.auth-card h1 { font-size: 32px; margin-bottom: 8px; }
.auth-card .lead { color: var(--muted); margin-bottom: 26px; }
.auth-card form { display: grid; gap: 16px; }
.auth-card .links { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 14px; }
.auth-card .switch-line { margin-top: 24px; text-align: center; color: var(--muted); font-size: 14px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Shell */
.shell { display: grid; grid-template-columns: var(--sidebar-w) minmax(0, 1fr); min-height: 100dvh; }
.sidebar { position: sticky; top: 0; height: 100dvh; display: flex; flex-direction: column; gap: 28px; padding: 24px 16px 18px; border-right: 1px solid var(--border); background: var(--surface); }
.sidebar .brand { padding: 0 8px; }
.nav { display: grid; gap: 2px; }
.nav a { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: var(--radius-sm); color: var(--muted); font-weight: 500; text-decoration: none; transition: background .12s var(--ease), color .12s var(--ease); }
.nav a svg { width: 19px; height: 19px; flex: none; }
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }
.nav .badge { margin-left: auto; min-width: 20px; padding: 1px 7px; border-radius: 99px; background: var(--warn-soft); color: var(--warn); font-size: 12px; font-weight: 700; text-align: center; }
.side-foot { margin-top: auto; display: grid; gap: 4px; }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: var(--radius-sm); min-width: 0; }
.user-chip .avatar { width: 34px; height: 34px; font-size: 13px; }
.user-chip .who { min-width: 0; line-height: 1.25; }
.user-chip .who b { display: block; font-size: 14px; }
.user-chip .who span { display: block; font-size: 12px; color: var(--muted); }

.content { min-width: 0; display: flex; flex-direction: column; }
.topbar { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 36px 14px; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.topbar h1 { font-size: 32px; }
.topbar .sub { color: var(--muted); font-size: 14px; margin-top: 2px; }
.topbar-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.view { padding: 8px 36px 56px; width: 100%; max-width: 1180px; display: grid; gap: 16px; align-content: start; animation: rise .35s var(--ease); }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.tabbar { display: none; }

/* Filtros de listado */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.toolbar .input, .toolbar .select { width: auto; min-height: 40px; }
.toolbar .search { flex: 1; min-width: 180px; position: relative; }
.toolbar .search .input { width: 100%; padding-left: 38px; }
.toolbar .search svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 17px; height: 17px; color: var(--muted); }

/* Ficha de alumno */
.profile-head { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.profile-head .info { flex: 1; min-width: 220px; }
.profile-head h2 { font-size: 26px; }
.facts { display: flex; gap: 6px 18px; flex-wrap: wrap; color: var(--muted); font-size: 14px; margin-top: 6px; }
.facts span { display: inline-flex; align-items: center; gap: 6px; }
.facts svg { width: 15px; height: 15px; }

/* Ajustes */
.settings-layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px; align-items: start; }
.settings-nav { position: sticky; top: 90px; display: grid; gap: 2px; }
.settings-nav button { text-align: left; border: 0; background: none; padding: 9px 12px; border-radius: var(--radius-sm); color: var(--muted); font-weight: 500; cursor: pointer; }
.settings-nav button:hover { background: var(--surface-2); color: var(--text); }
.settings-nav button[aria-selected="true"] { background: var(--accent-soft); color: var(--accent); }
.setting-row { display: grid; gap: 6px; padding: 16px 0; border-top: 1px solid var(--border); }
.setting-row:first-of-type { border-top: 0; padding-top: 4px; }

/* ─── Tablet ─── */
@media (max-width: 1020px) {
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.main-side { grid-template-columns: minmax(0, 1fr); }
}

/* ─── Móvil: barra inferior en lugar de lateral ─── */
@media (max-width: 760px) {
  .auth { grid-template-columns: minmax(0, 1fr); }
  .auth-aside { display: none; }
  .auth-card .brand-mobile { display: inline-flex; }
  .auth-card h1 { font-size: 28px; }

  .shell { grid-template-columns: minmax(0, 1fr); }
  .sidebar { display: none; }
  .topbar { padding: calc(14px + env(safe-area-inset-top)) 18px 10px; }
  .topbar h1 { font-size: 26px; }
  .view { padding: 6px 14px calc(var(--tabbar-h) + 28px + env(safe-area-inset-bottom)); }
  .tabbar {
    display: grid; grid-template-columns: repeat(5, 1fr);
    position: fixed; z-index: 20; left: 0; right: 0; bottom: 0;
    padding: 6px 6px calc(6px + env(safe-area-inset-bottom));
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--border);
  }
  .tabbar a { display: grid; justify-items: center; gap: 3px; padding: 6px 2px; border-radius: 10px; color: var(--muted); font-size: 11px; font-weight: 600; text-decoration: none; }
  .tabbar a svg { width: 22px; height: 22px; }
  .tabbar a[aria-current="page"] { color: var(--accent); }

  .grid.cols-2, .grid.cols-3 { grid-template-columns: minmax(0, 1fr); }
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.kpis-inline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card { padding: 16px; }
  .item { padding: 12px 16px; gap: 12px; }
  .day-head, .card.flush .card-head { padding-left: 16px; padding-right: 16px; }
  .card.flush .card-head { padding-top: 16px; }
  .kpi .value { font-size: 24px; }
  .hero { padding: 22px 20px; }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .settings-layout { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .settings-nav { position: static; display: flex; overflow-x: auto; gap: 4px; }
  .settings-nav button { white-space: nowrap; }

  dialog.modal { width: 100vw; max-width: 100vw; max-height: 92dvh; margin: auto 0 0; border-radius: 20px 20px 0 0; }
  dialog.modal.narrow { width: calc(100vw - 24px); max-width: 420px; margin: auto; border-radius: 18px; }
  .toasts { bottom: calc(var(--tabbar-h) + 16px + env(safe-area-inset-bottom)); }
}