:root{
  --bg:#f4f7f5; --panel:#fff; --ink:#1b1f1d; --sub:#76807a; --line:#dfe6e1;
  --accent:#1fa463; --accent2:#e8f6ee; --warn:#d9403a; --x:#000;
  --mono:"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:#dfe4e0;color:var(--ink);font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic UI",system-ui,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
#app{color:var(--ink);position:relative;max-width:560px;height:100%;height:100dvh;margin:0 auto;background:var(--bg);overflow:hidden;transition:background 1s,color 1s}
.screen{position:absolute;inset:0;display:none;flex-direction:column}
.screen.show{display:flex}

/* ボタン */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:0 28px;border-radius:10px;font-weight:700;font-size:16px;text-decoration:none;transition:transform .1s,opacity .2s}
.btn:active{transform:scale(.97)}
.btn[hidden]{display:none}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(31,164,99,.25)}
.btn.ghost{color:var(--sub)}
.btn.tiny{min-height:32px;padding:0 12px;font-size:12px;color:var(--sub);border:1px solid var(--line);border-radius:8px;background:var(--panel)}
.btn.x{background:var(--x);color:#fff}
.btn.x::before{content:"𝕏";font-size:18px}

/* タイトル */
#title{align-items:center;justify-content:safe center;text-align:center;padding:32px 24px;overflow-y:auto}
.t-logo{display:grid;grid-template-columns:repeat(5,14px);gap:4px;margin-bottom:24px;padding:12px;border-radius:12px;background:var(--panel);box-shadow:0 8px 24px rgba(0,0,0,.08)}
.t-logo i{height:14px;border-radius:3px;background:var(--line)}
.t-logo i:nth-child(3),.t-logo i:nth-child(7){background:var(--accent)}
.t-logo i.sp{grid-column:1/6;height:10px}
.t-sup{font-size:12px;letter-spacing:.3em;color:var(--accent);font-weight:700;margin-bottom:6px}
#title h1{font-size:36px;letter-spacing:.14em;margin-bottom:14px}
.t-lead{font-size:15px;line-height:1.9;color:#444;margin-bottom:20px}
.t-mode{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px;background:var(--panel);margin-bottom:22px}
.t-mode .md{padding:7px 12px;border-radius:999px;font-size:13px;color:var(--sub);white-space:nowrap}
/* フリック入力：端末のかなキーボードで打つ入力欄 */
.flick{flex:none;padding:4px 16px 8px}
.flick input{width:100%;height:48px;border-radius:12px;border:1.5px solid var(--line);background:var(--panel);font:inherit;font-size:18px;padding:0 14px;color:var(--ink);outline:none;transition:border-color .2s}
.flick input:focus{border-color:var(--accent)}
.flick input.ng{border-color:var(--warn);animation:shake .25s}
.t-mode .md.on{background:var(--ink);color:#fff;font-weight:700}
.t-notes{list-style:none;font-size:13px;color:var(--sub);line-height:2;margin-bottom:28px}
.t-foot{margin-top:24px;font-size:11px;letter-spacing:.2em;color:#aaa}

/* 練習画面 */
.p-head{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:56px;padding:0 18px;font-size:13px;color:var(--sub);flex:none}
.p-stage b{color:var(--ink);font-size:15px}
.p-timer{display:flex;align-items:baseline;gap:4px;justify-self:center}
.p-timer small{font-size:11px}
.p-timer b{font-size:22px;font-variant-numeric:tabular-nums;color:var(--ink);font-family:var(--mono)}
.p-kpm{justify-self:end;display:flex;align-items:baseline;gap:3px}
.p-kpm b{font-size:18px;color:var(--ink);font-variant-numeric:tabular-nums}
.p-bar{height:4px;background:var(--line);flex:none}
.p-bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .2s linear,background .6s}
.p-stage-wrap{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:12px 20px;position:relative}
.p-card{width:100%;background:var(--panel);border-radius:16px;padding:34px 22px 28px;text-align:center;box-shadow:0 10px 30px rgba(20,40,30,.08);transition:background 1s}
.p-card.slide{animation:slide .28s ease}
.p-card.shake{animation:shake .25s ease}
@keyframes slide{from{transform:translateY(10px);opacity:0}to{transform:none;opacity:1}}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.p-show{font-size:26px;font-weight:700;letter-spacing:.04em;line-height:1.5;margin-bottom:14px}
.p-kana{font-size:17px;color:var(--sub);letter-spacing:.06em;line-height:1.8;min-height:30px}
.p-kana .done{color:var(--accent)}
.p-kana .now{color:var(--ink);border-bottom:2px solid var(--accent)}
.p-kana .sp{display:inline-block;width:.5em}
.p-roma{margin-top:10px;font-family:var(--mono);font-size:19px;letter-spacing:.06em;color:#b8c0bb;word-break:break-all;line-height:1.7}
.p-roma .done{color:var(--accent)}
.p-roma .now{color:var(--ink)}
.p-roma .now b{color:var(--accent);font-weight:400}
.p-roma span+span{margin-left:.05em}
.p-toast{position:absolute;left:50%;bottom:16px;transform:translateX(-50%) translateY(6px);background:rgba(20,30,24,.85);color:#fff;font-size:13px;padding:7px 14px;border-radius:18px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;white-space:nowrap}
.p-toast.show{opacity:1;transform:translateX(-50%)}
.keys{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:4px 16px 8px;flex:none}
.keys[hidden]{display:none}
.key{min-width:52px;height:52px;padding:0 12px;border-radius:12px;background:var(--panel);border:1px solid var(--line);font-size:20px;font-weight:700;box-shadow:0 2px 0 var(--line);user-select:none;-webkit-user-select:none;touch-action:manipulation}
.key:active{transform:translateY(1px);box-shadow:none}
.key.ok{background:var(--accent2);border-color:var(--accent)}
.key.ng{animation:shake .25s ease;border-color:var(--warn)}
.p-foot{flex:none;padding:6px 18px calc(14px + env(safe-area-inset-bottom))}
.p-hint{font-size:12px;color:var(--sub);text-align:center;min-height:18px;margin-bottom:8px}
.p-tools{display:flex;align-items:center;justify-content:space-between;height:36px}
.p-acc{font-size:13px;color:var(--sub)}
.p-acc b{color:var(--ink);font-size:16px}

/* 残り0:00で止まる */
#app.zero .p-timer b{color:var(--warn)}
#app.zero .p-bar i{background:var(--warn)}
#app.zero .p-timer small{visibility:hidden}

/* 夕暮れ・夜（鍵の文から暗くなる） */
#app.dusk{--bg:#e2e6e1;--panel:#f3f5f1}
#app.dark{--bg:#15171a;--panel:#1f2226;--ink:#e6e8e4;--sub:#8b918d;--line:#2f343a;--accent2:#1d3a2a;background:var(--bg);color:var(--ink)}
#app.dark .p-card{box-shadow:0 10px 30px rgba(0,0,0,.4)}
#app.dark .p-roma{color:#555c58}
#app.dark .btn.tiny{background:var(--panel)}
#app.black{background:#000}
#app.black .screen{opacity:0;transition:opacity .9s}

/* 入力履歴 */
/* トーク画面（メッセージアプリ風） */
#log{background:#8fa6c4;color:#111;font-family:-apple-system,"Hiragino Sans","Noto Sans JP",system-ui,sans-serif;transition:opacity 1s}
#log.fadeout{opacity:0}
.sbar{display:flex;justify-content:space-between;align-items:center;height:calc(30px + env(safe-area-inset-top));padding:env(safe-area-inset-top) 22px 0 26px;background:#f7f7f7;font-size:14px;font-weight:600;flex:none}
.sb-r{display:flex;align-items:center;gap:6px}
.sb-net{font-size:12px;font-weight:700}
.bat{width:24px;height:12px;border:1.5px solid #111;border-radius:3.5px;position:relative;padding:1.5px;opacity:.9}
.bat::after{content:"";position:absolute;right:-4px;top:3px;width:2px;height:4px;background:#111;border-radius:0 1px 1px 0}
.bat i{display:block;height:100%;width:62%;background:#111;border-radius:1.5px}
.chat-head{display:flex;align-items:center;gap:12px;height:48px;padding:0 14px;background:#f7f7f7;border-bottom:1px solid #ddd;color:#222;flex:none}
.ch-back{font-size:26px;line-height:1;color:#111;margin-top:-3px}
.ch-title{flex:1;display:flex;flex-direction:column;min-width:0}
.ch-title b{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.l-sub{font-size:11px;color:#777;font-variant-numeric:tabular-nums}
.l-sub:empty{display:none}
.ch-icons{display:flex;gap:16px}
.ic-call{width:18px;height:18px;border:2px solid #111;border-radius:5px 5px 5px 9px;transform:rotate(-30deg);display:inline-block}
.ic-menu{width:18px;height:14px;display:inline-block;background:linear-gradient(#111 0 2px,transparent 2px 6px,#111 6px 8px,transparent 8px 12px,#111 12px 14px)}
.chat-body{flex:1;overflow-y:auto;padding:10px 10px 14px;display:flex;flex-direction:column;gap:8px;scrollbar-width:none}
.chat-body::-webkit-scrollbar{display:none}
.chat-body>:first-child{margin-top:auto}
.date,.sys{align-self:center;font-size:11.5px;color:#fff;background:rgba(40,55,80,.32);padding:4px 12px;border-radius:999px;text-align:center;line-height:1.5;max-width:86%;animation:pop .3s ease}
.row{display:flex;align-items:flex-end;width:100%;animation:pop .25s ease}
.row .av{width:34px;height:34px;border-radius:50%;flex:none;background:#c9d2dc;position:relative;overflow:hidden;align-self:flex-start;margin-right:8px}
.row .av::before{content:"";position:absolute;left:11px;top:6px;width:12px;height:12px;border-radius:50%;background:#f4f6f8}
.row .av::after{content:"";position:absolute;left:5px;top:20px;width:24px;height:20px;border-radius:12px 12px 0 0;background:#f4f6f8}
.row .line{display:flex;align-items:flex-end;min-width:0;max-width:calc(100% - 42px)}
.row .bb{display:block;background:#fff;color:#111;font-size:14.5px;line-height:1.5;padding:9px 13px;border-radius:18px;max-width:240px;min-width:0;word-break:break-word;overflow-wrap:anywhere}
.row.in .bb{border-top-left-radius:5px}
.row.out{justify-content:flex-end}
.row.out .line{max-width:100%}
.row.out .bb{background:#86e36f;border-top-right-radius:5px}
.row .meta{display:flex;flex-direction:column;font-size:10px;color:#3e4b60;line-height:1.3;flex:none;padding-bottom:2px}
.row.in .meta{margin-left:5px;align-items:flex-start}
.row.out .meta{margin-right:5px;align-items:flex-end}
.row .meta .read{display:none;font-style:normal}
.row.out.read .meta .read{display:block}
.row .bb.photo{padding:0;overflow:hidden;border-radius:14px;background:#000;max-width:none}
.row .bb.photo img{display:block;width:176px;height:234px;object-fit:cover}
.dots .bb{display:flex;padding:13px 14px}
.dots .bb i{margin:0 2px}
.dots .bb i{width:7px;height:7px;border-radius:50%;background:#9aa4b2;animation:dot 1s infinite}
.dots .bb i:nth-child(2){animation-delay:.15s}.dots .bb i:nth-child(3){animation-delay:.3s}
@keyframes dot{0%,60%,100%{opacity:.35;transform:none}30%{opacity:1;transform:translateY(-3px)}}
.chat-input{display:flex;align-items:center;gap:12px;padding:8px 12px calc(8px + env(safe-area-inset-bottom));background:#f7f7f7;border-top:1px solid #ddd;color:#555;flex:none}
.ci-plus{font-size:22px;line-height:1;color:#333}
.ci-cam{width:20px;height:16px;border:2px solid #333;border-radius:4px;position:relative;display:inline-block}
.ci-cam::after{content:"";position:absolute;left:4px;top:2px;width:8px;height:8px;border:2px solid #333;border-radius:50%}
.ci-field{flex:1;min-width:0;height:36px;border-radius:18px;background:#fff;border:1px solid #e2e2e2;display:flex;align-items:center;padding:0 12px;font-size:15px;color:#111}
.ci-field .ph{color:#aaa}
.ci-mic{width:10px;height:16px;border:2px solid #333;border-radius:6px;position:relative;display:inline-block;margin-right:4px}
.ci-mic::after{content:"";position:absolute;left:-5px;top:8px;width:16px;height:8px;border:2px solid #333;border-top:0;border-radius:0 0 10px 10px}
#app.black #log{opacity:0}

/* 結果 */
#result{background:#0d0f0e;color:#eee;align-items:center;justify-content:safe center;overflow-y:auto;text-align:center;padding:32px 24px}
.r-end{font-size:12px;letter-spacing:.3em;color:#888;margin-bottom:10px}
#result h2{font-size:26px;letter-spacing:.08em;margin-bottom:18px}
.r-text{font-size:14px;line-height:2;color:#bbb;margin-bottom:26px;white-space:pre-line}
.r-stats{display:flex;gap:28px;margin-bottom:20px}
.r-stats dt{font-size:11px;color:#888;margin-bottom:4px}
.r-stats dd{font-size:28px;font-weight:700;font-variant-numeric:tabular-nums}
#result .btn{width:100%;max-width:280px;margin-bottom:10px}
#result .btn.x{background:#fff;color:#000}
#result .btn.ghost{color:#999}
.r-col{width:100%;max-width:320px;margin-bottom:24px;text-align:left}
.r-prog{font-size:12px;letter-spacing:.15em;color:#999;text-align:center;margin-bottom:10px}
.r-ends{list-style:none;display:flex;flex-direction:column;gap:6px}
.r-ends li{display:grid;grid-template-columns:auto 1fr;column-gap:10px;align-items:baseline;padding:9px 12px;border:1px solid #2a2e2c;border-radius:10px;background:#151817}
.r-ends .n{font-size:11px;color:#777;letter-spacing:.05em}
.r-ends b{font-size:14px;font-weight:700;color:#ddd}
.r-ends small{grid-column:2;font-size:11px;color:#777;line-height:1.5}
.r-ends small:empty{display:none}
.r-ends li.no b{color:#555;letter-spacing:.2em}
.r-ends li.now{border-color:#6a706d;background:#1d2120}
.r-ends li.now .n{color:#ddd}
.r-ends li.got small{color:#7fd6a4}
.r-note{font-size:11px;color:#666;margin-top:14px;line-height:1.7}

/* アンケート */
.endpop{position:absolute;inset:0;z-index:20;display:none;align-items:center;justify-content:center;padding:16px;background:rgba(0,0,0,.6)}
.endpop.show{display:flex;animation:fade .25s ease}
@keyframes fade{from{opacity:0}}
.ep-card{position:relative;width:100%;max-width:360px;max-height:100%;overflow-y:auto;background:#fff;color:#1d1d1f;border-radius:18px;padding:26px 20px 20px;text-align:center}
.ep-x{position:absolute;right:8px;top:6px;width:36px;height:36px;font-size:22px;color:#999}
.ep-head{font-size:16px;font-weight:700;margin-bottom:16px}
.ep-label{font-size:12px;color:#7a7a80;margin-bottom:6px}
.stars{display:flex;justify-content:center;gap:6px;margin-bottom:14px}
.star{font-size:30px;color:#ddd;cursor:pointer;line-height:1;user-select:none}
.star.on{color:#f5b301}
.fb-text{width:100%;height:84px;border:1px solid #e4e4e2;border-radius:10px;padding:10px;font:inherit;font-size:14px;resize:none;margin-bottom:6px}
.fb-err{min-height:18px;font-size:12px;color:#d33;margin-bottom:6px}
.fb-send{width:100%}
.fb-send:disabled{opacity:.5}
.fb-thanks{display:none;font-size:14px;padding:18px 0}
.ep-div{height:1px;background:#eee;margin:18px 0 14px}
.portal-pitch{font-size:12px;color:#555;line-height:1.7;margin-bottom:10px}
.portal-btn{width:100%;background:#1b1f1d;color:#fff}
#result .small-ghost{min-height:40px;font-size:14px;color:#bbb;margin-bottom:0}
.mute{position:absolute;right:10px;top:60px;width:30px;height:30px;border-radius:50%;font-size:13px;color:var(--sub);background:var(--panel);border:1px solid var(--line);display:none}
#app.playing .mute{display:block}
.mute.off{text-decoration:line-through;opacity:.6}

@media (min-width:600px){
  body{padding:20px 0}
  #app{height:calc(100dvh - 40px);border-radius:18px;box-shadow:0 20px 60px rgba(0,0,0,.15)}
}