* { box-sizing:border-box; }
html { scroll-padding-top:20px; }
body { margin:0; background:var(--canvas); color:var(--ink); font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif; }
[hidden] { display:none!important; }
a { color:var(--accent); text-underline-offset:3px; overflow-wrap:anywhere; }
button,input,select { font:inherit; }
button { cursor:pointer; }
button,a,input,label { -webkit-tap-highlight-color:transparent; }
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
.app-shell { min-height:100vh; display:flex; flex-direction:column; }
.app-header { background:var(--paper); border-bottom:1px solid var(--line); }
.app-header__inner { max-width:1088px; margin:auto; padding:20px 24px; display:flex; align-items:center; gap:24px; }
.app-header__main { display:flex; align-items:center; flex:1; justify-content:space-between; gap:20px; }
.app-header__brand { min-width:0; }
.app-header__eyebrow { font-size:12px; color:var(--muted); margin:0 0 4px; }
.app-header__eyebrow a { color:inherit; text-decoration:none; }
.app-header__title { margin:0; font-size:23px; line-height:1.3; font-weight:650; overflow-wrap:anywhere; }
.app-header__actions { display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.app-header__actions form { margin:0; }
.layout-main { flex:1; width:100%; }
.layout-container { max-width:1088px; margin:auto; padding:32px 24px 64px; min-width:0; }
.layout-container--narrow { max-width:500px; width:100%; padding-top:48px; }
.btn { display:inline-flex; justify-content:center; align-items:center; gap:8px; min-height:44px; padding:9px 15px; border:1px solid var(--line); border-radius:10px; background:var(--paper); color:var(--ink); text-decoration:none; font-size:14px; font-weight:550; line-height:1.4; text-align:center; }
.btn:hover { background:var(--wash); }
.btn--primary { background:var(--button-bg); color:var(--button-ink); border-color:transparent; }
.btn--primary:hover { filter:brightness(.94); background:var(--button-bg); }
.btn--ghost { background:transparent; }
.btn--danger { color:var(--danger); }
.btn--block { width:100%; }
.form-label { display:block; font-size:14px; margin:0 0 6px; color:var(--muted); }
.form-input { width:100%; min-width:0; min-height:48px; padding:10px 14px; background:var(--canvas); color:var(--ink); border:1px solid var(--line); border-radius:10px; }
.form-error { color:var(--danger); padding:14px; border:1px solid var(--danger); border-radius:10px; }
.login-card { padding:32px; background:var(--paper); border:1px solid var(--line); border-radius:18px; }
.login-card__logo { width:48px; height:48px; background:var(--wash); color:var(--accent); border-radius:14px; display:grid; place-items:center; font-size:25px; margin-bottom:20px; }
.login-card__title { font-size:25px; margin:0 0 8px; line-height:1.3; }
.login-card__subtitle,.login-card__hint { color:var(--muted); font-size:14px; margin:0; }
.login-card__hint { margin-top:24px; }
.login-form { margin-top:28px; display:grid; gap:8px; }
.login-form .form-label:not(:first-child) { margin-top:12px; }
.login-form .btn { margin-top:18px; }
.courses-meta { display:flex; flex-wrap:wrap; justify-content:space-between; align-items:center; gap:12px; margin-bottom:24px; }
.courses-meta p { margin:0; font-size:14px; color:var(--muted); }
.courses-meta strong { color:var(--ink); }
.courses-list { list-style:none; padding:0; margin:0; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px; }
.courses-list li { min-width:0; }
.course-card { display:flex; align-items:center; gap:18px; padding:24px; background:var(--paper); color:var(--ink); border:1px solid var(--line); border-radius:16px; text-decoration:none; min-height:128px; height:100%; }
.course-card:hover { border-color:var(--accent); background:var(--wash); }
.course-card__avatar { display:grid; place-items:center; flex:none; width:48px; height:48px; background:var(--wash); color:var(--accent); border-radius:14px; font-size:23px; }
.course-card__content { flex:1; min-width:0; }
.course-card__title { margin:0 0 6px; font-size:20px; line-height:1.4; font-weight:650; overflow-wrap:anywhere; }
.course-card__meta { margin:0; font-size:13px; color:var(--muted); }
.course-card__arrow { color:var(--accent); font-size:22px; }
.empty-state { background:var(--paper); padding:40px 24px; border:1px solid var(--line); border-radius:16px; text-align:center; }
.empty-state h1 { font-size:28px; margin:0; }
.empty-state p { color:var(--muted); }
.site-footer { max-width:1088px; width:100%; margin:auto; padding:20px 24px; color:var(--muted); font-size:12px; border-top:1px solid var(--line); }
.admin-shell { border-bottom:1px solid var(--line); }
.admin-toolbar { max-width:1088px; margin:auto; padding:14px 24px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.admin-toolbar__primary,.admin-toolbar__secondary { display:flex; flex-wrap:wrap; align-items:center; gap:8px; }
.admin-toolbar__logout { margin:0; }
.admin-toolbar__link { display:flex; align-items:center; min-height:44px; padding:8px 14px; border-radius:10px; color:var(--muted); text-decoration:none; font-size:14px; }
.admin-toolbar__link--active { background:var(--wash); color:var(--accent); font-weight:650; }
.admin-page-head { display:flex; justify-content:space-between; align-items:start; flex-wrap:wrap; gap:24px; margin-bottom:28px; }
.admin-page-head > div { min-width:0; }
.breadcrumbs { color:var(--muted); font-size:12px; margin:0 0 10px; display:flex; gap:8px; flex-wrap:wrap; }
.section-title { font-size:27px; line-height:1.3; margin:0 0 8px; }
.section-subtitle { margin:0; color:var(--muted); font-size:14px; max-width:600px; }
.admin-action-bar,.admin-page-head__actions { display:flex; gap:8px; flex-wrap:wrap; align-items:center; }
.admin-cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr)); gap:20px; margin-bottom:24px; }
.admin-cards--stats { grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr)); }
.admin-card { min-width:0; padding:24px; border:1px solid var(--line); border-radius:16px; background:var(--paper); }
.admin-card--wide { grid-column:1/-1; }
.admin-card__label,.admin-card__eyebrow { color:var(--muted); font-size:13px; margin:0 0 8px; }
.admin-card__value { margin:0 0 8px; font-size:36px; font-weight:650; line-height:1.2; }
.admin-card__hint { color:var(--muted); margin:12px 0 0; font-size:12px; overflow-wrap:anywhere; }
.admin-card__header { display:flex; justify-content:space-between; align-items:start; flex-wrap:wrap; gap:14px; margin-bottom:24px; }
.admin-card h3 { font-size:19px; line-height:1.4; margin:0; overflow-wrap:anywhere; }
.admin-form-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr)); align-items:end; gap:18px; }
.admin-form-grid label,.admin-panel-form label { display:block; min-width:0; }
.admin-checkbox { display:flex!important; align-items:center; gap:12px; min-height:48px; padding:10px; cursor:pointer; font-size:14px; }
.admin-checkbox input { flex:none; width:22px; height:22px; accent-color:var(--accent); }
.admin-checkbox span { min-width:0; overflow-wrap:anywhere; }
.admin-checkbox small { display:block; color:var(--muted); }
.admin-checkbox--course { border:1px solid var(--line); border-radius:10px; padding:14px; }
.admin-access-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr)); gap:12px; }
.admin-access-form__actions { margin-top:24px; }
.admin-action-stack { display:grid; gap:20px; }
.admin-panel-form { display:grid; gap:14px; }
.admin-table-wrapper { width:100%; overflow-x:auto; }
table { border-collapse:collapse; width:100%; font-size:13px; }
th { text-align:left; color:var(--muted); font-size:12px; font-weight:550; }
th,td { padding:12px 10px; border-bottom:1px solid var(--line); vertical-align:top; overflow-wrap:anywhere; }
td a { display:inline-flex; align-items:center; min-height:28px; }
td pre { white-space:pre-wrap; overflow-wrap:anywhere; font-size:11px; max-width:320px; margin:0; }
.admin-summary-list { list-style:none; margin:0; padding:0; }
.admin-summary-list li { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:8px; padding:12px 0; border-bottom:1px solid var(--line); font-size:14px; }
.admin-summary-list strong { font-size:13px; font-weight:550; }
.admin-detail-list { margin:0; font-size:14px; }
.admin-detail-list > div { display:grid; grid-template-columns:minmax(100px,.4fr) minmax(0,1fr); padding:10px 0; gap:12px; border-bottom:1px solid var(--line); }
.admin-detail-list dt { color:var(--muted); }
.admin-detail-list dd { margin:0; overflow-wrap:anywhere; }
.admin-ui-message { color:var(--accent); }
.admin-ui-message:empty { display:none; }
.admin-ui-message.is-error { color:var(--danger); }
@media(max-width:760px) {
  .app-header__inner { display:block; padding:18px 18px; }
  .app-header__main { gap:12px; }
  .app-header__title { font-size:21px; }
  .app-header__actions { margin-top:16px; }
  .app-header__actions > a,.app-header__actions > form { flex:1; }
  .app-header__actions .btn { width:100%; font-size:13px; padding:9px 10px; }
  .layout-container { padding:26px 16px 48px; }
  .layout-container--narrow { padding-top:32px; }
  .courses-list { grid-template-columns:1fr; gap:14px; }
  .course-card { padding:20px 18px; gap:14px; min-height:112px; }
  .course-card__title { font-size:18px; }
  .course-card__avatar { width:44px; height:44px; }
  .courses-meta { margin-bottom:20px; }
  .login-card { padding:26px 22px; }
  .admin-toolbar { padding:12px 16px; }
  .admin-toolbar__primary { width:100%; }
  .admin-toolbar__link { flex:1; justify-content:center; padding:8px; font-size:13px; }
  .admin-toolbar__secondary { width:100%; }
  .admin-toolbar__secondary > a,.admin-toolbar__secondary > form { flex:1; }
  .admin-toolbar__secondary .btn { width:100%; }
  .admin-page-head { gap:18px; }
  .section-title { font-size:24px; }
  .admin-card { padding:20px 16px; }
  .admin-cards--stats { grid-template-columns:1fr 1fr; gap:12px; }
  .admin-card--metric { padding:16px 12px; }
  .admin-card__value { font-size:30px; }
  .admin-card__header .btn { width:100%; }
  table,tbody { display:block; }
  thead { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
  tbody tr { display:block; margin-bottom:18px; border:1px solid var(--line); border-radius:10px; padding:8px 12px; }
  td { display:grid; grid-template-columns:minmax(85px,.45fr) minmax(0,1fr); gap:10px; padding:10px 0; }
  td::before { content:attr(data-label); font-size:12px; color:var(--muted); }
  td:last-child { border-bottom:0; }
  td[colspan] { display:block; }
  td[colspan]::before { display:none; }
  td a { min-height:44px; }
  td pre { max-width:none; }
}