/* css/langtab.css */
/* R34B · sitewide language switcher (x-lang-tab). Self-contained: token fallbacks so it works on pages without tokens.css. */
.lt { --lt-surface: var(--surface, #fff); --lt-text: var(--text, #262c28); --lt-muted: var(--text-muted, #5f6761); --lt-line: var(--line, #e6e9e4); --lt-hover: var(--surface-hover, #f4f5f1); --lt-accent: var(--accent-text, #047857); --lt-soft: var(--accent-soft, #ecfdf5); font-family: var(--font-sans, system-ui, sans-serif); }
:root[data-theme="dark"] .lt { --lt-surface: var(--surface, #111315); --lt-text: var(--text, #d9dedb); --lt-muted: var(--text-muted, #8e9692); --lt-line: var(--line-strong, rgb(255 255 255 / .12)); --lt-hover: var(--surface-hover, #1a1d20); --lt-accent: var(--accent-text, #6ff2c6); --lt-soft: var(--accent-soft, rgb(43 227 162 / .1)); }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .lt { --lt-surface: #111315; --lt-text: #d9dedb; --lt-muted: #8e9692; --lt-line: rgb(255 255 255 / .12); --lt-hover: #1a1d20; --lt-accent: #6ff2c6; --lt-soft: rgb(43 227 162 / .1); } }
.lt .lt-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.lt-tab { position: fixed; inset-inline-end: 0; top: 62%; z-index: 880; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; min-width: 40px; min-height: 52px; padding: 6px 4px; border: 1px solid var(--lt-line); border-inline-end: 0; border-start-start-radius: 12px; border-end-start-radius: 12px; background: var(--lt-surface); color: var(--lt-text); box-shadow: 0 6px 20px -8px rgb(15 23 20 / .28); cursor: pointer; font: inherit; transition: transform .2s cubic-bezier(.22, 1, .36, 1), background .15s; transform: translateX(calc(var(--lt-dir, 1) * 6px)); opacity: .94; }
[dir="rtl"] .lt-tab { --lt-dir: -1; }
.lt-tab:hover, .lt-tab[aria-expanded="true"] { transform: none; opacity: 1; background: var(--lt-hover); }
.lt-tab:focus-visible { outline: 2px solid var(--lt-accent); outline-offset: 2px; transform: none; }
.lt-code { font-size: 10.5px; font-weight: 700; letter-spacing: .06em; line-height: 1; }
.lt-globe { color: var(--lt-accent); }
.lt-scrim { position: fixed; inset: 0; z-index: 890; background: rgb(10 14 12 / .32); opacity: 0; transition: opacity .2s; }
.lt-scrim.is-on { opacity: 1; }
.lt-panel { position: fixed; z-index: 891; inset-block: 0; inset-inline-end: 0; width: min(360px, 100vw - 32px); display: flex; flex-direction: column; background: var(--lt-surface); color: var(--lt-text); border-inline-start: 1px solid var(--lt-line); box-shadow: 0 20px 60px -20px rgb(0 0 0 / .4); padding: 20px 16px max(16px, env(safe-area-inset-bottom)); transform: translateX(calc(var(--lt-dir, 1) * 104%)); transition: transform .26s cubic-bezier(.22, 1, .36, 1); outline: none; }
[dir="rtl"] .lt-panel { --lt-dir: -1; }
.lt-panel.is-on { transform: none; }
.lt-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding-inline: 4px; }
.lt-title { margin: 0; color: var(--lt-text); font-size: 18px; font-weight: 700; }
.lt-x { display: inline-grid; place-items: center; width: 44px; height: 44px; border: 0; border-radius: 10px; background: transparent; color: var(--lt-muted); cursor: pointer; }
.lt-x:hover { background: var(--lt-hover); color: var(--lt-text); }
.lt-x:focus-visible, .lt-opt:focus-visible, .lt-search input:focus-visible { outline: 2px solid var(--lt-accent); outline-offset: 2px; }
.lt-lead { margin: 4px 4px 14px; font-size: 13px; line-height: 1.5; color: var(--lt-muted); }
.lt-search input { width: 100%; box-sizing: border-box; min-height: 44px; margin-bottom: 10px; padding: 0 12px; border: 1px solid var(--lt-line); border-radius: 10px; background: transparent; color: inherit; font: inherit; font-size: 15px; }
.lt-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; display: grid; gap: 4px; }
.lt-opt { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 52px; padding: 8px 12px; border-radius: 12px; color: inherit; text-decoration: none; border: 1px solid transparent; }
.lt-opt:hover { background: var(--lt-hover); }
.lt-opt.is-current { background: var(--lt-soft); border-color: color-mix(in srgb, var(--lt-accent) 30%, transparent); }
.lt-names { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.lt-names b { font-size: 15px; font-weight: 650; color: var(--lt-text); }
.lt-opt.is-current .lt-names b { color: var(--lt-text); }
.lt-names small { font-size: 12.5px; color: var(--lt-muted); }
.lt-tick { color: var(--lt-accent); flex: none; }
.lt-empty { margin: 12px 4px; color: var(--lt-muted); font-size: 14px; }
@media (max-width: 480px) { .lt-tab { top: 46%; min-width: 34px; min-height: 48px; } .lt-code { font-size: 10px; } }
@media (prefers-reduced-motion: reduce) { .lt-tab, .lt-panel, .lt-scrim { transition: none; } }
@media print { .lt { display: none; } }