/* LMS UI U2 — dashboard/public shell, header, role navigation, footer and real theme. */
:root {
  --lms-shell-sidebar-width: 17rem;
  --lms-shell-sidebar-collapsed-width: 5.25rem;
  --lms-shell-header-height: 4.5rem;
  --lms-shell-content-max: 100rem;
  --lms-shell-brand-color: var(--lms-color-brand-600);
}

html { scroll-padding-top: calc(var(--lms-shell-header-height) + 1rem); }
body.lms-dashboard-body,
body.lms-public-body {
  min-height: 100vh;
  margin: 0;
  color: var(--lms-color-text-primary);
  background: var(--lms-color-canvas);
}

.lms-skip-link {
  position: fixed;
  top: .5rem;
  right: .75rem;
  z-index: 2000;
  padding: .75rem 1rem;
  border-radius: .75rem;
  color: var(--lms-color-text-inverse);
  background: var(--lms-shell-brand-color);
  transform: translateY(-180%);
  transition: transform .15s ease;
}
.lms-skip-link:focus { transform: translateY(0); }

.lms-app-shell { min-height: 100vh; }
.lms-sidebar {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 1040;
  display: flex;
  width: var(--lms-shell-sidebar-width);
  height: 100dvh;
  flex-direction: column;
  border-left: 1px solid var(--lms-color-border);
  background: var(--lms-color-surface);
  box-shadow: -8px 0 24px rgb(15 23 42 / 8%);
  transition: width .2s ease, transform .2s ease;
}
.lms-sidebar__brand {
  position: relative;
  inset: auto;
  z-index: auto;
  display: flex;
  width: 100%;
  height: auto;
  min-height: var(--lms-shell-header-height);
  flex: 0 0 auto;
  align-items: center;
  gap: .5rem;
  padding: .65rem .75rem;
  border-bottom: 1px solid var(--lms-color-divider);
  background: var(--lms-color-surface);
}
.lms-brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: .7rem;
  color: var(--lms-color-text-primary);
  text-decoration: none;
}
.lms-brand:hover { color: var(--lms-color-text-primary); }
.lms-brand__logo {
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 auto;
  object-fit: contain;
  border-radius: .85rem;
}
.lms-brand__logo--dark { display: none; }
html[data-lms-theme="dark"] .lms-brand__logo--light { display: none; }
html[data-lms-theme="dark"] .lms-brand__logo--dark { display: block; }
.lms-brand__text { min-width: 0; display: grid; gap: .15rem; }
.lms-brand__text strong,
.lms-brand__text small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lms-brand__text strong { font-size: .95rem; }
.lms-brand__text small { color: var(--lms-color-text-muted); font-size: .72rem; }
.lms-sidebar__collapse {
  display: inline-grid;
  width: 2.5rem;
  height: 2.5rem;
  margin-right: auto;
  place-items: center;
  border: 1px solid var(--lms-color-border);
  border-radius: .75rem;
  color: var(--lms-color-text-secondary);
  background: var(--lms-color-surface-subtle);
}
.lms-sidebar__nav { min-height: 0; flex: 1 1 auto; overflow: auto; padding: .75rem; }
.lms-shell-menu,
.lms-nav-section__items { margin: 0; padding: 0; list-style: none; }
.lms-nav-section + .lms-nav-section { margin-top: .4rem; }
.lms-nav-section__toggle,
.lms-nav-link {
  display: flex;
  width: 100%;
  min-height: 2.75rem;
  align-items: center;
  gap: .7rem;
  border: 0;
  border-radius: .75rem;
  color: var(--lms-color-text-secondary);
  background: transparent;
  text-align: right;
  text-decoration: none;
}
.lms-nav-section__toggle { padding: .55rem .7rem; font-weight: 700; }
.lms-nav-section__toggle:hover,
.lms-nav-section__toggle:focus-visible,
.lms-nav-link:hover,
.lms-nav-link:focus-visible { color: var(--lms-color-text-primary); background: var(--lms-color-surface-subtle); }
.lms-nav-section__toggle [data-lms-icon],
.lms-nav-link [data-lms-icon] { flex: 0 0 1.25rem; }
.lms-nav-section__chevron { margin-right: auto; transition: transform .16s ease; }
.lms-nav-section__toggle[aria-expanded="true"] .lms-nav-section__chevron { transform: rotate(180deg); }
.lms-nav-section__items { display: grid; gap: .2rem; padding: .25rem .8rem .35rem 0; }
.lms-nav-section__items[hidden] { display: none; }
.lms-nav-link { min-height: 2.5rem; padding: .45rem .7rem; font-size: .9rem; }
.lms-nav-link.is-active {
  color: var(--lms-color-brand-700);
  background: var(--lms-color-brand-50);
  box-shadow: inset -3px 0 0 var(--lms-shell-brand-color);
}
html[data-lms-theme="dark"] .lms-nav-link.is-active { color: var(--lms-color-brand-200); background: rgb(37 99 235 / 20%); }
.lms-sidebar__footer { display: grid; gap: .45rem; padding: .75rem; border-top: 1px solid var(--lms-color-divider); }
.lms-sidebar__role { color: var(--lms-color-text-muted); font-size: .78rem; }
.lms-sidebar__site-link { display: flex; align-items: center; gap: .55rem; color: var(--lms-color-text-secondary); text-decoration: none; }

.lms-app-header {
  position: fixed;
  inset: 0 var(--lms-shell-sidebar-width) auto 0;
  z-index: 1030;
  height: var(--lms-shell-header-height);
  border-bottom: 1px solid var(--lms-color-border);
  background: color-mix(in srgb, var(--lms-color-surface) 92%, transparent);
  backdrop-filter: blur(14px);
  transition: right .2s ease;
}
.lms-app-header__inner {
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  gap: 1rem;
  padding: 0 clamp(.75rem, 2vw, 1.5rem);
}
.lms-header-action {
  position: relative;
  display: inline-grid;
  width: 2.65rem;
  height: 2.65rem;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--lms-color-border);
  border-radius: .8rem;
  color: var(--lms-color-text-secondary);
  background: var(--lms-color-surface);
  text-decoration: none;
}
.lms-header-action:hover,
.lms-header-action:focus-visible { color: var(--lms-color-text-primary); background: var(--lms-color-surface-subtle); }
.lms-header-action--menu { display: none; }
.lms-header-heading { min-width: 0; }
.lms-header-heading__eyebrow { margin: 0 0 .1rem; color: var(--lms-color-text-muted); font-size: .72rem; }
.lms-header-heading__title { max-width: 42vw; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: clamp(1rem, 2vw, 1.25rem); }
.lms-header-actions { display: flex; min-width: 0; align-items: center; gap: .5rem; margin-right: auto; }
.lms-header-badge {
  position: absolute;
  top: -.35rem;
  left: -.35rem;
  display: grid;
  min-width: 1.25rem;
  height: 1.25rem;
  place-items: center;
  border: 2px solid var(--lms-color-surface);
  border-radius: 999px;
  color: #fff;
  background: var(--lms-color-danger-solid);
  font-size: .65rem;
}
.lms-user-menu__toggle {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: .6rem;
  padding: .25rem .45rem;
  border: 1px solid var(--lms-color-border);
  border-radius: .9rem;
  color: var(--lms-color-text-primary);
  background: var(--lms-color-surface);
}
.lms-avatar { width: 2.55rem; height: 2.55rem; border-radius: .75rem; object-fit: cover; }
.lms-avatar--fallback { display: grid; place-items: center; color: #fff; background: var(--lms-shell-brand-color); font-weight: 800; }
.lms-user-menu__identity { display: grid; min-width: 7rem; max-width: 13rem; text-align: right; }
.lms-user-menu__identity strong,
.lms-user-menu__identity small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lms-user-menu__identity small { color: var(--lms-color-text-muted); font-size: .72rem; }
.lms-header-dropdown { width: min(22rem, calc(100vw - 1rem)); padding: 0; overflow: hidden; border-color: var(--lms-color-border); color: var(--lms-color-text-primary); background: var(--lms-color-surface-elevated); }
.lms-header-dropdown__head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem 1rem; border-bottom: 1px solid var(--lms-color-divider); }
.lms-header-dropdown__body { max-height: 23rem; overflow: auto; }
.lms-notification-item { display: grid; gap: .2rem; padding: .75rem 1rem; border-bottom: 1px solid var(--lms-color-divider); color: var(--lms-color-text-secondary); text-decoration: none; }
.lms-notification-item.is-unread { box-shadow: inset -3px 0 var(--lms-shell-brand-color); background: var(--lms-color-surface-subtle); }
.lms-notification-item span,
.lms-notification-item time { color: var(--lms-color-text-muted); font-size: .75rem; }
.lms-header-empty { padding: 1.5rem; color: var(--lms-color-text-muted); text-align: center; }
.lms-user-dropdown__summary { display: grid; padding: 1rem; border-bottom: 1px solid var(--lms-color-divider); }
.lms-user-dropdown__summary span { color: var(--lms-color-text-muted); font-size: .8rem; }
.lms-user-dropdown .dropdown-item { display: flex; align-items: center; gap: .65rem; min-height: 2.75rem; color: var(--lms-color-text-secondary); }
.lms-user-dropdown__logout { color: var(--lms-color-danger-text) !important; }

.lms-app-main {
  min-height: calc(100vh - var(--lms-shell-header-height));
  margin: var(--lms-shell-header-height) var(--lms-shell-sidebar-width) 0 0;
  transition: margin-right .2s ease;
}
.lms-page-container {
  width: min(100%, var(--lms-shell-content-max));
  min-width: 0;
  margin-inline: auto;
  padding: clamp(1rem, 2.4vw, 2rem);
}
.lms-content-section { min-width: 0; }
.lms-dashboard-footer {
  position: static;
  display: flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-right: var(--lms-shell-sidebar-width);
  padding: .75rem clamp(1rem, 2.4vw, 2rem);
  border-top: 1px solid var(--lms-color-border);
  color: var(--lms-color-text-muted);
  background: var(--lms-color-surface);
  transition: margin-right .2s ease;
}
.lms-dashboard-footer nav { display: flex; gap: 1rem; }
.lms-dashboard-footer a { color: var(--lms-color-link); }
.lms-shell-overlay { display: none; }

.lms-app-shell.lms-sidebar-collapsed .lms-sidebar { width: var(--lms-shell-sidebar-collapsed-width); }
.lms-app-shell.lms-sidebar-collapsed .lms-app-header { right: var(--lms-shell-sidebar-collapsed-width); }
.lms-app-shell.lms-sidebar-collapsed .lms-app-main,
.lms-app-shell.lms-sidebar-collapsed .lms-dashboard-footer { margin-right: var(--lms-shell-sidebar-collapsed-width); }
.lms-app-shell.lms-sidebar-collapsed .lms-brand__text,
.lms-app-shell.lms-sidebar-collapsed .lms-nav-section__label,
.lms-app-shell.lms-sidebar-collapsed .lms-nav-section__chevron,
.lms-app-shell.lms-sidebar-collapsed .lms-nav-link span:last-child,
.lms-app-shell.lms-sidebar-collapsed .lms-sidebar__role,
.lms-app-shell.lms-sidebar-collapsed .lms-sidebar__site-link span:last-child { display: none; }
.lms-app-shell.lms-sidebar-collapsed .lms-sidebar__brand { justify-content: center; padding-inline: .45rem; }
.lms-app-shell.lms-sidebar-collapsed .lms-sidebar__collapse { display: none; }
.lms-app-shell.lms-sidebar-collapsed .lms-header-action--menu { display: inline-grid; }
.lms-app-shell.lms-sidebar-collapsed .lms-nav-section__toggle,
.lms-app-shell.lms-sidebar-collapsed .lms-nav-link { justify-content: center; padding-inline: .4rem; }
.lms-app-shell.lms-sidebar-collapsed .lms-nav-section__items { padding-right: 0; }

/* Public shell */
.lms-public-header { position: sticky; top: 0; z-index: 1020; border-bottom: 1px solid var(--lms-color-border); background: color-mix(in srgb, var(--lms-color-surface) 94%, transparent); backdrop-filter: blur(14px); }
.lms-public-header__inner,
.lms-public-container,
.lms-public-footer__inner { width: min(calc(100% - 2rem), 76rem); margin-inline: auto; }
.lms-public-header__inner { display: flex; min-height: 4.75rem; align-items: center; gap: 1.25rem; }
.lms-public-brand { flex: 0 1 20rem; }
.lms-public-navigation { display: flex; flex: 1 1 auto; align-items: center; justify-content: space-between; gap: 1rem; }
.lms-public-navigation > ul { display: flex; align-items: center; gap: .25rem; margin: 0; padding: 0; list-style: none; }
.lms-public-navigation a:not(.lms-btn) { display: inline-flex; padding: .6rem .75rem; border-radius: .65rem; color: var(--lms-color-text-secondary); text-decoration: none; }
.lms-public-navigation a:hover { background: var(--lms-color-surface-subtle); }
.lms-public-header__actions { display: flex; align-items: center; gap: .5rem; }
.lms-public-nav-toggle { display: none; width: 2.75rem; height: 2.75rem; margin-right: auto; border: 1px solid var(--lms-color-border); border-radius: .75rem; color: var(--lms-color-text-primary); background: var(--lms-color-surface); }
.lms-public-main { min-height: 65vh; }
.lms-public-container { padding-block: clamp(1.25rem, 4vw, 3rem); }
.lms-public-footer { border-top: 1px solid var(--lms-color-border); background: var(--lms-color-surface); }
.lms-public-footer__inner { display: grid; grid-template-columns: minmax(14rem, 1.4fr) 1fr minmax(10rem, .7fr); gap: 2rem; padding-block: 2rem; }
.lms-public-footer__brand p { max-width: 36rem; margin: .5rem 0 0; color: var(--lms-color-text-muted); }
.lms-public-footer nav,
.lms-public-footer__contact { display: grid; align-content: start; gap: .6rem; }
.lms-public-footer a { color: var(--lms-color-link); text-decoration: none; }
.lms-public-footer__legal { padding: .85rem 1rem; border-top: 1px solid var(--lms-color-divider); color: var(--lms-color-text-muted); text-align: center; font-size: .82rem; }
.lms-public-info__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); gap: 1rem; }


@media (min-width: 761px) {
  .lms-public-nav-toggle { display: none !important; }
  .lms-public-navigation.collapse { display: flex !important; }
}
@media (max-width: 1024px) {
  .lms-sidebar { width: min(19rem, calc(100vw - 2.5rem)); transform: translateX(105%); }
  .lms-app-header { right: 0; }
  .lms-app-main,
  .lms-dashboard-footer,
  .lms-app-shell.lms-sidebar-collapsed .lms-app-main,
  .lms-app-shell.lms-sidebar-collapsed .lms-dashboard-footer { margin-right: 0; }
  .lms-header-action--menu { display: inline-grid; }
  .lms-sidebar__collapse { display: none; }
  .lms-app-shell.lms-sidebar-open .lms-sidebar { transform: translateX(0); }
  .lms-shell-overlay {
    position: fixed;
    inset: 0;
    z-index: 1035;
    display: block;
    border: 0;
    background: var(--lms-color-overlay);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease;
  }
  .lms-app-shell.lms-sidebar-open .lms-shell-overlay { opacity: 1; pointer-events: auto; }
  body.lms-sidebar-lock { overflow: hidden; }
  .lms-app-shell.lms-sidebar-collapsed .lms-sidebar { width: min(19rem, calc(100vw - 2.5rem)); }
  .lms-app-shell.lms-sidebar-collapsed .lms-brand__text,
  .lms-app-shell.lms-sidebar-collapsed .lms-nav-section__label,
  .lms-app-shell.lms-sidebar-collapsed .lms-nav-section__chevron,
  .lms-app-shell.lms-sidebar-collapsed .lms-nav-link span:last-child,
  .lms-app-shell.lms-sidebar-collapsed .lms-sidebar__role,
  .lms-app-shell.lms-sidebar-collapsed .lms-sidebar__site-link span:last-child { display: initial; }
}

@media (max-width: 760px) {
  .lms-app-header__inner { gap: .55rem; }
  .lms-header-heading__eyebrow,
  .lms-header-action--help,
  .lms-user-menu__identity { display: none; }
  .lms-header-heading__title { max-width: 32vw; }
  .lms-header-actions { gap: .3rem; }
  .lms-user-menu__toggle { padding: .2rem; }
  .lms-user-menu__toggle > [data-lms-icon="chevron"] { display: none; }
  .lms-dashboard-footer { align-items: flex-start; flex-direction: column; }
  .lms-public-header__inner { min-height: 4.25rem; flex-wrap: wrap; padding-block: .55rem; }
  .lms-public-brand { flex: 1 1 auto; }
  .lms-public-brand .lms-brand__text small { display: none; }
  .lms-public-nav-toggle { display: inline-grid !important; place-items: center; }
  .lms-public-navigation { width: 100%; flex-basis: 100%; align-items: stretch; flex-direction: column; padding: .5rem 0 1rem; }
  .lms-public-navigation:not(.show) { display: none; }
  .lms-public-navigation > ul,
  .lms-public-header__actions { align-items: stretch; flex-direction: column; }
  .lms-public-navigation a,
  .lms-public-header__actions .lms-btn { justify-content: center; }
  .lms-public-footer__inner { grid-template-columns: 1fr; gap: 1.25rem; }
}

@media (max-width: 360px) {
  .lms-page-container { padding-inline: .75rem; }
  .lms-header-heading__title { max-width: 27vw; font-size: .9rem; }
  .lms-header-action { width: 2.45rem; height: 2.45rem; }
  .lms-avatar { width: 2.35rem; height: 2.35rem; }
}

@media (max-width: 300px) {
  .lms-app-header__inner { gap: .35rem; padding-inline: .5rem; }
  .lms-header-heading { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .lms-sidebar,
  .lms-app-header,
  .lms-app-main,
  .lms-dashboard-footer,
  .lms-shell-overlay { transition: none; }
}