:root{color-scheme:dark;--wf-bg: #000;--wf-fg: #fff;--wf-muted: #a0a0a0;--wf-track: #555;--wf-rule: #2c2c2c;--wf-accent: #3b9eff;--wf-danger: #ff3b30;--wf-warning: #ff9500;--wf-good: #34c759}body{margin:0;background:var(--wf-bg);color:var(--wf-fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}h1,h2{font-weight:700}.card{margin:0;padding:20px 0;border-top:1px solid var(--wf-rule)}.card h2{margin-top:0;font-size:1rem}button{font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}button.primary{display:block;width:100%;margin:12px 0;padding:14px 20px;border:0;border-radius:999px;background:var(--wf-accent);color:#fff;font-weight:700}button.primary:disabled{opacity:.5;cursor:default}button.link{padding:8px 0;border:0;background:none;color:var(--wf-fg);font-weight:700;text-decoration:underline;text-decoration-color:var(--wf-track);text-underline-offset:4px}button:focus-visible,input:focus-visible{outline:2px solid var(--wf-accent);outline-offset:2px}label{display:block;margin-bottom:6px;font-weight:700}input{box-sizing:border-box;width:100%;padding:12px 16px;border:2px solid var(--wf-track);border-radius:999px;background:#000;color:var(--wf-fg);font:inherit;font-weight:700;letter-spacing:.1em;text-align:center}.error{color:var(--wf-danger);font-weight:700}.notice{margin:12px 0;padding:2px 0 2px 12px;border-left:4px solid var(--wf-warning);font-weight:700}.muted{color:var(--wf-muted);font-size:.85rem}.center{text-align:center}