:root{color-scheme:dark;--bg: #14161a;--surface: #1d2026;--surface-2: #262a32;--text: #e6e8ec;--muted: #9aa0aa;--accent: #5b8cff;--ok: #3fb27f;--warn: #d98a3d;--bad: #d9534f;--radius: 14px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}button{font:inherit;cursor:pointer;border:none;border-radius:10px;padding:.8rem 1rem;color:var(--text);background:var(--surface-2)}button:hover{filter:brightness(1.12)}.app{max-width:520px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;padding:1.2rem}.card-panel{background:var(--surface);border-radius:var(--radius);padding:1.4rem;flex:1;display:flex;flex-direction:column}.row{display:flex;gap:.6rem}.row>*{flex:1}.muted{color:var(--muted)}.leech{color:var(--warn);font-size:.85rem;margin-top:.6rem}.b-ok{background:color-mix(in srgb,var(--ok) 30%,var(--surface-2))}.b-warn{background:color-mix(in srgb,var(--warn) 30%,var(--surface-2))}.b-bad{background:color-mix(in srgb,var(--bad) 30%,var(--surface-2))}.content :first-child{margin-top:0}label{display:block;margin-top:.8rem}label.check{display:flex;align-items:center;gap:.5rem;margin-top:1rem}input[type=text],input[type=password],input[type=number]{width:100%;margin-top:.3rem;padding:.6rem;border-radius:8px;border:1px solid var(--surface-2);background:var(--surface-2);color:var(--text)}ul.decks{list-style:none;padding:0;margin:1rem 0;display:flex;flex-direction:column;gap:.8rem}ul.decks li{background:var(--surface-2);border-radius:10px;padding:.8rem}.deckname{width:100%;text-align:left;background:transparent;padding:.4rem 0;font-weight:600}button:disabled{opacity:.5;cursor:default}