:root{--bg: #f2f2f7;--surface: #ffffff;--text: #111114;--muted: #6e6e76;--line: #d8d8de;--accent: #0a60ff;--new: #0a60ff;--lrn: #e5322d;--rev: #1f9d4a;--again: #e5322d;--hard: #e08a00;--good: #1f9d4a;--easy: #0a60ff;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #000000;--surface: #1c1c1e;--text: #f2f2f7;--muted: #9a9aa2;--line: #38383a;--accent: #4d8dff;--new: #4d8dff;--lrn: #ff6a64;--rev: #43c26f}}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:16px/1.4 -apple-system,BlinkMacSystemFont,SF Pro Text,system-ui,sans-serif;overscroll-behavior:none}#app{height:100dvh;display:flex;flex-direction:column;max-width:900px;margin:0 auto;background:var(--bg)}button{font:inherit;color:inherit;cursor:pointer}.topbar{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:calc(env(safe-area-inset-top) + 8px) calc(env(safe-area-inset-right) + 14px) 8px calc(env(safe-area-inset-left) + 14px);background:var(--surface);border-bottom:1px solid var(--line);min-height:52px}.topbar h1{font-size:22px;margin:0}.icon-btn{background:none;border:0;color:var(--accent);font-size:17px;padding:8px 6px}.icon-btn.danger{color:var(--lrn)}.scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:env(safe-area-inset-bottom)}.center{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;padding:24px;text-align:center}.deck-title{font-size:26px;margin:0;overflow-wrap:anywhere}.decklist{background:var(--surface);margin:16px 12px;border-radius:12px;overflow:hidden}.decklist:empty{display:none}.deckrow{display:flex;align-items:center;gap:6px;min-height:52px;padding-right:14px;border-bottom:1px solid var(--line);cursor:pointer}.deckrow:last-child{border-bottom:0}.deckrow:active{background:var(--bg)}.dname{flex:1;overflow-wrap:anywhere;padding:8px 0}.chev{width:28px;height:32px;background:none;border:0;color:var(--muted);font-size:18px}.chev.hidden{visibility:hidden}.counts{display:inline-flex;gap:14px;font-variant-numeric:tabular-nums;font-weight:500}.cnt.new{color:var(--new)}.cnt.lrn{color:var(--lrn)}.cnt.rev{color:var(--rev)}.cnt.zero{color:var(--muted);opacity:.5}.cnt.cur{text-decoration:underline;font-weight:700}.stats{display:flex;gap:32px}.stat .num{font-size:38px;font-weight:600;font-variant-numeric:tabular-nums}.stat .lbl{color:var(--muted);font-size:13px}.primary{background:var(--accent);color:#fff;border:0;border-radius:12px;padding:12px 22px;font-weight:600}.primary.big{font-size:18px;min-height:52px;min-width:220px}.primary.wide{width:100%}.link{background:none;border:0;color:var(--accent);padding:8px}.muted{color:var(--muted)}.empty{text-align:center;padding:56px 24px}.empty .big,.finished .big{font-size:56px}.footer{padding:4px 20px 24px}.hint{color:var(--muted);font-size:13px;margin:8px 0}.stage{flex:1;position:relative;min-height:0}.cardframe{position:absolute;inset:0;width:100%;height:100%;border:0;background:transparent}.finished{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center}.finished[hidden],.stage[hidden],.bottombar[hidden]{display:none}.bottombar{display:flex;gap:8px;padding:8px calc(env(safe-area-inset-right) + 12px) calc(env(safe-area-inset-bottom) + 8px) calc(env(safe-area-inset-left) + 12px);background:var(--surface);border-top:1px solid var(--line)}.ans{flex:1;border:0;border-radius:12px;min-height:56px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}.ans small{opacity:.85;font-size:12px}.ans b{font-size:16px}.ans.again{background:var(--again)}.ans.hard{background:var(--hard)}.ans.good{background:var(--good)}.ans.easy{background:var(--easy)}.menuwrap{position:relative}.menu{position:absolute;right:0;top:100%;z-index:20;min-width:180px;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 28px #00000040;overflow:hidden}.menu[hidden]{display:none}.menu button{display:block;width:100%;text-align:left;background:none;border:0;padding:12px 16px;border-bottom:1px solid var(--line)}.menu button:last-child{border-bottom:0}.overlay{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:50}.dialog{background:var(--surface);border-radius:16px;padding:22px;width:min(320px,86vw)}.dialog h3{margin:0 0 12px}.bar{height:8px;background:var(--line);border-radius:4px;overflow:hidden}.bar .fill{height:100%;width:0;background:var(--accent);transition:width .15s}.phase{color:var(--muted);font-size:13px;margin-top:10px;overflow-wrap:anywhere}