:root{--bg:#0f1117;--card:#181b24;--text:#eceef4;--mute:#9aa1b2;--accent:#7c5cff;--bad:#ff6b6b;--ok:#3ddc97;--line:#2a2f3d}
@media (prefers-color-scheme:light){:root{--bg:#f5f6fa;--card:#fff;--text:#14161d;--mute:#5d6577;--line:#dfe2ea}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}
header a{color:var(--text);text-decoration:none;font-weight:600}main{max-width:720px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin:12px 0}
label{display:block;margin:12px 0 4px;color:var(--mute);font-size:14px}
input,select{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit}
button{margin-top:16px;padding:10px 16px;border:0;border-radius:8px;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer}
button.link{background:none;color:var(--mute);margin:0;padding:0;font-weight:400}.err{color:var(--bad)}.ok{color:var(--ok)}.mute{color:var(--mute)}
input.code-input{font-size:1.6rem;letter-spacing:.35em;text-align:center;font-variant-numeric:tabular-nums}
button.secondary{background:transparent;color:var(--text);border:1px solid var(--line)}button:disabled{opacity:.55;cursor:not-allowed}form.inline{display:inline-block}
details{margin-top:16px}summary{cursor:pointer;color:var(--mute)}
@keyframes vv-shake{0%,100%{transform:translateX(0)}20%,60%{transform:translateX(-8px)}40%,80%{transform:translateX(8px)}}
input.shake{animation:vv-shake .4s;border-color:var(--bad)}@media (prefers-reduced-motion:reduce){input.shake{animation:none}}
/* authenticated app bar + breadcrumbs (no dead-end pages: Dashboard/Admin always reachable) */
.appbar{gap:8px 18px;flex-wrap:wrap}
.appbar .brand{font-weight:700}
.appnav{display:flex;gap:4px 14px;flex-wrap:wrap;margin-right:auto;margin-left:8px}
.appnav a{color:var(--mute);text-decoration:none;padding:6px 8px;border-radius:7px;font-size:.95rem}
.appnav a:hover{color:var(--text);background:var(--card)}
.appout{margin:0}
.crumbs{max-width:720px;margin:10px auto 0;padding:0 16px;color:var(--mute);font-size:.9rem}
.crumbs a{color:var(--mute);text-decoration:none}.crumbs a:hover{color:var(--text);text-decoration:underline}
.crumbs .sep{margin:0 6px;opacity:.6}.crumbs [aria-current=page]{color:var(--text)}
.skip{position:absolute;left:-9999px}.skip:focus{left:8px;top:8px;background:var(--accent);color:#fff;padding:8px 12px;border-radius:8px;z-index:10}
.small{font-size:.85rem}
/* sticky Save: long forms keep their primary action reachable from anywhere on the page (no auto-save by design) */
html{scroll-padding-bottom:5.5rem}
.form-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:16px}
.form-actions button,.form-actions .btn{margin-top:0}
.form-actions.sticky{position:sticky;bottom:0;z-index:20;margin-top:16px;padding:12px 0 calc(12px + env(safe-area-inset-bottom,0px));background:var(--bg);background:color-mix(in srgb,var(--bg) 90%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--line)}
.form-actions.sticky :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:600px){.form-actions.sticky{padding-left:0;padding-right:0}.form-actions.sticky button,.form-actions.sticky .btn{flex:1 1 100%;min-height:44px}}
@media (prefers-reduced-transparency:reduce){.form-actions.sticky{background:var(--bg);-webkit-backdrop-filter:none;backdrop-filter:none}}