@keyframes preloader-knight-breathe{0%,to{opacity:.055;transform:scale(1)}50%{opacity:.13;transform:scale(1.04)}}.app-error-main{z-index:0;background:radial-gradient(ellipse 78% 62% at 50% 36%, #62992414 0%, transparent 58%), linear-gradient(175deg, var(--surface-soft) 0%, var(--background) 100%);min-height:min(100dvh,100vh);color:var(--foreground);justify-content:center;align-items:center;padding:clamp(1.1rem,4vw,2.25rem);display:flex;position:relative;overflow:hidden}.app-error-main:before{content:"";z-index:0;opacity:.065;pointer-events:none;transform-origin:50%;background:url(/img/pieces/lichess/wN.svg) 50%/min(360px,min(56vw,52vh)) no-repeat;animation:3.4s ease-in-out infinite preloader-knight-breathe;position:absolute;inset:-18% -10%}.app-error-card{z-index:1;border:1px solid color-mix(in srgb, var(--accent) 20%, var(--border));border-radius:12px;width:100%;max-width:28rem;margin:0 auto;padding:clamp(1.15rem,3.2vw,1.85rem) clamp(1.1rem,3vw,1.6rem);position:relative;box-shadow:inset 0 1px #ffffff8c,0 22px 50px -30px #00000029}.app-error-kicker{text-transform:uppercase;letter-spacing:.07em;color:var(--accent);margin:0 0 .45rem;font-size:11px;font-weight:700}.app-error-title{color:var(--foreground);margin:0;font-size:clamp(1.2rem,1.05rem + .55vw,1.5rem);font-weight:700;line-height:1.28}.app-error-lead{max-width:38ch;margin:.75rem 0 0;font-size:14px;line-height:1.55}.app-error-digest{margin-top:.65rem;font-size:12px;line-height:1.45}.app-error-code{background:var(--surface-soft);border:1px solid var(--border);border-radius:4px;padding:.1rem .35rem;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:11px}.app-error-dev-message{word-break:break-word;white-space:pre-wrap;background:color-mix(in srgb, var(--surface-soft) 92%, var(--foreground) 8%);border:1px solid var(--border);border-radius:8px;width:100%;max-width:100%;max-height:11rem;margin-top:.85rem;padding:.65rem .75rem;font-size:11px;line-height:1.45;overflow:auto}.app-error-actions{flex-wrap:wrap;align-items:center;gap:.55rem;margin-top:1.15rem;display:flex}