/* Demo „Barrierefreiheit“: ergänzt kit.css */
[hidden] { display: none !important; }

.bf-skip { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; border-radius: 99px; background: var(--ink); color: var(--paper); text-decoration: none; font-size: 14px; transition: top .2s; }
.bf-skip:focus { top: 12px; }

code { font-family: var(--mono); font-size: 0.88em; background: var(--paper-2); padding: 1px 5px; border-radius: 5px; color: var(--ink); white-space: nowrap; }

/* ---------- Umschalter ---------- */
.bf-section { padding-top: 8px; }
.bf-section, .bf-try-section, .bf-more { scroll-margin-top: 72px; }
.bf-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px; margin-bottom: 20px; }
.bf-switch { display: inline-flex; padding: 4px; gap: 4px; border-radius: 99px; background: var(--paper-2); border: 1px solid var(--line-soft); }
.bf-switch-btn { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 18px; border: 0; border-radius: 99px; background: transparent; color: var(--ink-2); font-size: 15px; font-weight: 500; cursor: pointer; transition: background-color .25s, color .25s, box-shadow .25s; }
.bf-switch-btn:hover { color: var(--ink); }
.bf-switch-btn[aria-selected="true"] { background: var(--white); color: var(--ink); box-shadow: var(--shadow-sm); }
.bf-tab-n { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 6px; border-radius: 99px; background: var(--err-soft); color: var(--err); font-family: var(--mono); font-size: 12px; }
.bf-tab-n:empty { display: none; }
.bf-tab-n.is-zero { background: var(--ok-soft); color: #145536; }
.bf-vdesc { margin: 0; flex: 1 1 320px; font-size: 14.5px; color: var(--ink-2); max-width: 70ch; }

/* ---------- Raster ---------- */
.bf-grid { display: grid; gap: 20px; grid-template-columns: minmax(0, 1fr); align-items: start; }
@media (min-width: 1080px) { .bf-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 440px); gap: 28px; } }

/* ---------- Testbereich ---------- */
.bf-stage { position: relative; border-radius: var(--radius-lg); border: 1px solid var(--line); background: var(--sheet); overflow: hidden; }
.bf-stage::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: repeating-linear-gradient(-45deg, var(--err) 0 8px, transparent 8px 14px); opacity: .55; transition: opacity .3s; }
.bf-stage.is-good::before { background: var(--ok); opacity: .7; }
.bf-stage-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; padding: 14px 18px 12px; border-bottom: 1px dashed var(--line); font-size: 13.5px; color: var(--ink-2); }
.bf-stage-k { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink); }
.bf-stage-name { flex: 1 1 auto; }
.bf-frame-wrap { position: relative; background: #fbf8f2; }
.bf-frame-wrap.is-enter { animation: kit-in .45s var(--ease) both; }
.bf-frame { display: block; width: 100%; height: 900px; border: 0; background: #fbf8f2; }
.bf-stage-foot { margin: 0; padding: 12px 18px 14px; border-top: 1px dashed var(--line); font-size: 13px; color: var(--ink-3); }

.bf-hl { position: absolute; pointer-events: none; border: 2px solid var(--signal); border-radius: 8px; box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.22); z-index: 5; }
.bf-hl.is-on { animation: bf-hl 1.1s var(--ease) 2; }
.bf-hl-tag { position: absolute; left: -2px; bottom: 100%; margin-bottom: 4px; padding: 2px 7px; border-radius: 6px; background: var(--ink); color: var(--paper); font-family: var(--mono); font-size: 11px; white-space: nowrap; }
@keyframes bf-hl { 0% { box-shadow: 0 0 0 0 rgba(255, 90, 31, 0.5); } 70% { box-shadow: 0 0 0 10px rgba(255, 90, 31, 0); } 100% { box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.22); } }

/* ---------- Prüfer ---------- */
.bf-panel { border-radius: var(--radius-lg); background: var(--white); border: 1px solid var(--line-soft); box-shadow: var(--shadow); display: flex; flex-direction: column; min-width: 0; }
@media (min-width: 1080px) { .bf-panel { position: sticky; top: 84px; max-height: calc(100vh - 104px); } }
.bf-panel-head { padding: 18px 20px 0; }
.bf-panel-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.bf-panel-top h2 { margin: 0; }
.bf-vtabs .tab { min-height: 44px; }
.bf-panel-body { padding: 18px 20px 22px; overflow: auto; min-height: 0; }
.bf-panel-body:focus-visible { outline-offset: -2px; }

.bf-stale { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; margin-bottom: 14px; padding: 10px 14px; border-radius: var(--radius); background: var(--warn-soft); color: var(--warn); font-size: 14px; }
.bf-link-btn { border: 0; padding: 0; min-height: 24px; background: none; color: var(--ink); font: inherit; font-weight: 500; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }

.bf-sum { margin-bottom: 18px; }
.bf-sum-main { display: flex; align-items: center; gap: 14px; }
.bf-sum-n { font-size: 3rem; font-weight: 500; letter-spacing: -0.05em; line-height: 1; color: var(--err); font-variant-numeric: tabular-nums; }
.bf-sum-n.is-ok { color: var(--ok); }
.bf-sum-l { display: flex; flex-direction: column; font-size: 17px; font-weight: 500; line-height: 1.25; }
.bf-sum-sub { font-size: 13.5px; font-weight: 400; color: var(--ink-2); }
.bf-sum-sev { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.bf-note { margin: 10px 0 0; font-size: 13px; color: var(--ink-2); }

.bf-findings { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.bf-f { padding: 14px 16px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--sheet); border-left-width: 3px; }
.bf-f.sev-kritisch { border-left-color: var(--err); }
.bf-f.sev-hoch { border-left-color: #c77a00; }
.bf-f.sev-mittel { border-left-color: var(--ink-3); }
.bf-f-top { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; }
.bf-crit { font-size: 13px; color: var(--ink-2); }
.bf-crit-n { font-family: var(--mono); font-size: 12.5px; color: var(--ink); }
.bf-crit-l { color: var(--ink-3); }
.bf-f-title { margin: 8px 0 4px; font-size: 16px; font-weight: 500; letter-spacing: -0.01em; }
.bf-f-help { margin: 0 0 8px; font-size: 13.5px; color: var(--ink-2); line-height: 1.5; }
.bf-f-help code { white-space: normal; }
.bf-els { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.bf-els li { display: flex; flex-wrap: wrap; align-items: center; gap: 0 10px; }
.bf-jump { display: inline-flex; align-items: center; gap: 8px; min-height: 32px; max-width: 100%; padding: 4px 8px 4px 0; border: 0; background: none; color: var(--ink); font: inherit; font-size: 13px; cursor: pointer; text-align: left; border-radius: 6px; }
.bf-jump-k { flex-shrink: 0; font-weight: 500; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(18, 18, 17, 0.35); }
.bf-jump:hover .bf-jump-k { text-decoration-color: var(--ink); }
.bf-jump-code { overflow: hidden; text-overflow: ellipsis; max-width: 100%; }
.bf-el-note { font-size: 12.5px; color: var(--ink-3); padding-bottom: 4px; }
.bf-clean { padding: 16px; border-radius: var(--radius); background: var(--ok-soft); color: var(--ok); font-size: 14.5px; }
.bf-clean strong { font-weight: 500; }

.bf-passed { margin-top: 16px; border-top: 1px solid var(--line-soft); padding-top: 10px; }
.bf-passed summary { cursor: pointer; min-height: 32px; display: flex; align-items: center; font-size: 14.5px; font-weight: 500; color: var(--ok); }
.bf-passed summary::marker { color: var(--ok); }
.bf-passed ul { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 4px; }
.bf-passed li { display: flex; flex-wrap: wrap; gap: 0 6px; align-items: baseline; font-size: 13.5px; color: var(--ink-2); padding: 5px 0; border-bottom: 1px solid var(--line-soft); }
.bf-pass-n { margin-left: auto; font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); }

.bf-honest { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0 0; padding: 12px 14px; border-radius: var(--radius); background: var(--paper); font-size: 13.5px; color: var(--ink-2); }
.bf-honest .dot { margin-top: 7px; flex-shrink: 0; }

/* Screenreader-Ansicht */
.bf-sr-bar { display: flex; flex-wrap: wrap; gap: 8px; }
.bf-sr-bar .chip { min-height: 36px; }
.bf-sr-note { margin: 10px 0 14px; font-size: 13px; color: var(--ink-3); }
.bf-sr { list-style: none; margin: 0; padding: 0; font-size: 14px; }
.bf-sr-item { display: grid; grid-template-columns: 116px minmax(0, 1fr); gap: 2px 12px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); }
.bf-sr.is-tab .bf-sr-item { grid-template-columns: 26px 104px minmax(0, 1fr); }
.bf-sr-i { font-family: var(--mono); font-size: 12px; color: var(--ink-3); padding-top: 2px; }
.bf-sr-role { font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); padding-top: 2px; overflow-wrap: anywhere; }
.bf-sr-item.is-landmark .bf-sr-role { color: var(--ink-3); }
.bf-sr-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; overflow-wrap: anywhere; }
.bf-sr-name { color: var(--ink); }
.bf-sr-noname { color: var(--err); font-style: italic; }
.bf-sr-states { font-size: 12.5px; color: var(--ink-3); }
.bf-sr-issue { font-size: 12.5px; color: var(--err); }
.bf-sr-item.has-issue { background: linear-gradient(90deg, var(--err-soft), transparent 70%); padding-left: 8px; margin-left: -8px; border-radius: 6px; }
.bf-sr-missing { margin: 14px 0 0; padding: 10px 14px; border-radius: var(--radius); background: var(--err-soft); color: var(--err); font-size: 13.5px; }

/* ---------- Selbst ausprobieren ---------- */
.bf-try { display: grid; gap: 28px; grid-template-columns: minmax(0, 1fr); padding: 28px 20px; border-radius: var(--radius-lg); background: var(--paper-2); }
@media (min-width: 768px) { .bf-try { padding: 36px; } }
@media (min-width: 1080px) { .bf-try { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 40px; align-items: center; } }
.bf-try-intro .eyebrow { margin-bottom: 10px; color: var(--ink-2); }
.bf-try-intro p.muted { margin: 14px 0 18px; }
#try-start.is-ready { border-color: var(--ink); }
.bf-try-grid { display: grid; gap: 14px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 640px) { .bf-try-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.bf-demo { padding: 18px; border-radius: var(--radius); background: var(--white); border: 1px solid var(--line-soft); transition: border-color .25s, box-shadow .25s; }
.bf-demo.has-focus { border-color: rgba(18, 18, 17, 0.35); box-shadow: var(--shadow-sm); }
.bf-demo-k { display: flex; align-items: center; gap: 8px; margin: 0 0 14px; font-size: 13.5px; color: var(--ink-2); }
.bf-demo-row { display: flex; flex-wrap: wrap; gap: 8px; }
.bf-tea { min-height: 44px; padding: 0 16px; border-radius: 99px; border: 1px solid rgba(18, 18, 17, 0.25); background: var(--white); color: var(--ink); font: inherit; font-size: 14.5px; cursor: pointer; transition: background-color .2s, color .2s, border-color .2s; }
.bf-tea:hover { border-color: var(--ink); }
.bf-tea[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
/* Absichtlich falsch: Fokusrahmen entfernt (nur in diesem Vergleich) */
.bf-demo.is-bad .bf-tea:focus, .bf-demo.is-bad .bf-tea:focus-visible { outline: none; }
.bf-demo.is-good .bf-tea:focus-visible { outline: 3px solid var(--signal); outline-offset: 3px; border-radius: 99px; }
.bf-where { margin: 14px 0 0; font-size: 13px; color: var(--ink-3); display: flex; gap: 8px; align-items: baseline; }
.bf-where-k { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.bf-demo.has-focus .bf-where-v { color: var(--ink); font-weight: 500; }

/* ---------- Text unten ---------- */
.bf-more { padding-top: 8px; }
.bf-more-grid { display: grid; gap: 18px 48px; grid-template-columns: minmax(0, 1fr); border-top: 1px solid var(--line); padding-top: 32px; }
@media (min-width: 900px) { .bf-more-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); } }
.bf-more .eyebrow { margin-bottom: 10px; }
.bf-more-text p { margin: 0 0 12px; max-width: 66ch; }

/* Lange Elementbeschreibungen dürfen das Panel nicht verbreitern */
.bf-findings { grid-template-columns: minmax(0, 1fr); }
.bf-f, .bf-els li, .bf-jump { min-width: 0; }
.bf-jump-code { min-width: 0; white-space: nowrap; display: block; }
.bf-more-btn { margin-top: 4px; font-size: 13px; }
@media (max-width: 1079px) { .bf-panel-head { padding-top: 16px; } }
@media (max-width: 520px) {
  .bf-vtabs { overflow: visible; }
  .bf-vtabs .tab { flex: 1 1 0; white-space: normal; text-align: center; line-height: 1.25; padding: 10px 8px 12px; font-size: 14.5px; }
  .bf-sr-item, .bf-sr.is-tab .bf-sr-item { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .bf-sr.is-tab .bf-sr-item { grid-template-columns: 26px minmax(0, 1fr); }
  .bf-sr.is-tab .bf-sr-role { grid-column: 2; }
  .bf-sr.is-tab .bf-sr-body { grid-column: 2; }
  .bf-sr.is-tab .bf-sr-i { grid-row: 1 / span 2; }
}