/* らくがきタワー
   Layout: one-screen game. A grid-paper world scrolls up over an eraser platform with a cm ruler at its left edge.
   Panels (title, lobby, drawing pad, waiting card, result) dock to the bottom on phones and to the right on wide screens.
   Light = 方眼ノート, dark = 黒板. Drawings turn into marker-colored stickers. */
:root{
  --paper:#f5f8fa; --grid:#d9e7ed; --grid-major:#b5d0dc;
  --ink:#1e2842; --ink-soft:#5a6580; --sheet:#ffffff;
  --pad:#fcfdfd; --pad-grid:#e3edf1; --pad-hint:#97a3b5; --piece-ink:#1e2842;
  --marker:#ffe04a; --on-marker:#1e2842; --danger:#d4424b;
  --eraser:#fbfaf4; --sleeve:#2f6fd6; --sleeve-ink:#ffffff;
  --shadow:rgba(30,40,66,.17); --p1:#ff7aa3; --p2:#45b2f7; --focus:#2f8fe0;
  /* sticker colors: きいろ オレンジ あか ピンク むらさき あお みずいろ みどり ちゃいろ しろ グレー くろ */
  --c0:#ffe04a; --c1:#ffad52; --c2:#ff6464; --c3:#ff9dc4; --c4:#c39cff; --c5:#5b8ff0;
  --c6:#8fd6ff; --c7:#8fd96b; --c8:#c48a5a; --c9:#ffffff; --c10:#b8bfca; --c11:#2b2f3a; --line-on-dark:#f6f3ea;
  --f-display:"Yusei Magic","Hiragino Maru Gothic ProN","Zen Maru Gothic",sans-serif;
  --f-body:"Zen Maru Gothic","Hiragino Maru Gothic ProN","Hiragino Sans","Noto Sans JP",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#1b332e; --grid:#244139; --grid-major:#2f5148;
    --ink:#f1eee4; --ink-soft:#a7b8b1; --sheet:#213d37;
    --pad:#f1eee4; --pad-grid:#dfdbcf; --pad-hint:#8c8a80; --piece-ink:#1b2622;
    --marker:#efd96a; --on-marker:#1b2622; --danger:#ff8a80;
    --eraser:#e9e5d8; --sleeve:#5a8ee6; --sleeve-ink:#ffffff;
    --shadow:rgba(0,0,0,.34); --p1:#ff9dbb; --p2:#7cc8f7; --focus:#efd96a;
    --c0:#ecd96d; --c1:#eda865; --c2:#e9776f; --c3:#f0a3bf; --c4:#bda6ea; --c5:#6f97e0;
    --c6:#8fcbea; --c7:#9fd28a; --c8:#b98d68; --c9:#f4f1e8; --c10:#aeb5bd; --c11:#262a2f; --line-on-dark:#f4f1e8;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#1b332e; --grid:#244139; --grid-major:#2f5148;
  --ink:#f1eee4; --ink-soft:#a7b8b1; --sheet:#213d37;
  --pad:#f1eee4; --pad-grid:#dfdbcf; --pad-hint:#8c8a80; --piece-ink:#1b2622;
  --marker:#efd96a; --on-marker:#1b2622; --danger:#ff8a80;
  --eraser:#e9e5d8; --sleeve:#5a8ee6; --sleeve-ink:#ffffff;
  --shadow:rgba(0,0,0,.34); --p1:#ff9dbb; --p2:#7cc8f7; --focus:#efd96a;
  --c0:#ecd96d; --c1:#eda865; --c2:#e9776f; --c3:#f0a3bf; --c4:#bda6ea; --c5:#6f97e0;
  --c6:#8fcbea; --c7:#9fd28a; --c8:#b98d68; --c9:#f4f1e8; --c10:#aeb5bd; --c11:#262a2f; --line-on-dark:#f4f1e8;
  color-scheme:dark;
}

html{height:100%;box-sizing:border-box;overscroll-behavior:none;touch-action:manipulation;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);background:var(--paper)}
*,*::before,*::after{box-sizing:inherit}
[hidden]{display:none!important}
body{height:100%;margin:0;overflow:hidden;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:15px;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;-webkit-user-select:none;user-select:none;-webkit-text-size-adjust:100%}
#app{position:relative;height:100%;overflow:hidden}
#world{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}

/* HUD */
.hud{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 16px 0 44px;pointer-events:none;z-index:2}
.hud>*{pointer-events:auto}
.hud-r{display:flex;align-items:center;gap:8px}
button.small.icon{width:40px;padding:0;color:var(--ink)}
button.small.icon svg{width:22px;height:22px}
@media (max-width:400px){
  .hud{padding:8px 10px 0 40px;gap:6px}
  .stats{gap:4px}
  .stat{gap:4px;padding:4px 8px 5px}
  .stat .lbl{font-size:10px;letter-spacing:.02em}
  .stat b{font-size:20px}
  .stat .unit{font-size:11px}
  .hud-r{gap:6px}
  button.small.icon{width:34px}
  button.small.icon svg{width:20px;height:20px}
  #quitBtn{padding:4px 10px}
  .stat+.stat .lbl{display:none} /* 「24.5 cm」だけで高さとわかるので、せまい画面ではラベルを省く */
}
.stats{display:flex;gap:6px;flex-wrap:wrap;min-width:0}
.stat{display:flex;align-items:baseline;gap:5px;padding:5px 11px 6px;background:var(--sheet);border:2px solid var(--ink);border-radius:12px;box-shadow:0 2px 0 var(--ink)}
.stat .lbl{font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--ink-soft)}
.stat b{font-family:var(--f-display);font-weight:400;font-size:22px;line-height:1;font-variant-numeric:tabular-nums}
.stat .unit{font-size:12px;font-weight:700}

/* Buttons + inputs */
button{font:inherit;font-weight:700;color:var(--ink);background:var(--sheet);border:2px solid var(--ink);border-radius:14px;min-height:48px;padding:10px 12px;cursor:pointer;box-shadow:0 3px 0 var(--ink);transition:transform .08s ease,box-shadow .08s ease;display:inline-flex;align-items:center;justify-content:center;gap:6px;touch-action:manipulation;white-space:nowrap}
button:active:not(:disabled){transform:translateY(3px);box-shadow:0 0 0 var(--ink)}
button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
button:disabled{opacity:.4;cursor:default;box-shadow:none}
button.primary{background:var(--marker);color:var(--on-marker)}
button.small{min-height:34px;padding:4px 12px;font-size:13px;border-radius:999px;box-shadow:none}
button.text{min-height:40px;border:0;box-shadow:none;background:transparent;text-decoration:underline;text-underline-offset:4px;font-size:14px;color:var(--ink-soft)}
button.warn{background:var(--danger);border-color:var(--danger);color:var(--on-marker)}
button svg{width:20px;height:20px;flex:none}
input{font:inherit;font-family:var(--f-display);font-size:24px;letter-spacing:.3em;text-align:center;color:var(--ink);background:var(--paper);border:2px solid var(--ink);border-radius:14px;min-height:48px;padding:6px 10px;width:100%;min-width:0;-webkit-user-select:text;user-select:text;font-variant-numeric:tabular-nums}
input::placeholder{font-family:var(--f-body);font-size:14px;letter-spacing:.04em;color:var(--ink-soft)}

/* Sheets */
.sheet{position:absolute;left:0;right:0;bottom:0;margin-inline:auto;width:100%;max-width:480px;max-height:100%;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding:16px 16px 18px;background:var(--sheet);border:2px solid var(--ink);border-bottom:0;border-radius:22px 22px 0 0;box-shadow:0 -8px 28px var(--shadow);z-index:3;touch-action:manipulation}
.sheet.in{animation:rise .32s cubic-bezier(.2,.8,.2,1)}
@keyframes rise{from{translate:0 24px;opacity:0}to{translate:0 0;opacity:1}}
.row{display:flex;gap:10px}
.row>button{flex:1 1 0;min-width:0}
.sheet-title{margin:0;font-family:var(--f-display);font-weight:400;font-size:26px;line-height:1.2}

/* Title */
.logo{margin:2px 0 0;font-family:var(--f-display);font-weight:400;font-size:clamp(38px,11vw,52px);line-height:1.1;letter-spacing:.01em;white-space:nowrap}
.logo .tag{display:inline-block;margin-left:.08em;padding:0 .18em .04em;background:var(--marker);color:var(--on-marker);border:2px solid var(--ink);border-radius:10px;transform:rotate(-3deg);box-shadow:0 3px 0 var(--ink)}
.lead{margin:0;color:var(--ink-soft);line-height:1.7}
.how{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;counter-reset:how}
.how li{counter-increment:how;display:flex;align-items:center;gap:6px;font-size:13px;font-weight:700;padding:4px 10px 4px 4px;border:1.5px solid var(--ink-soft);border-radius:999px}
.how li::before{content:counter(how);display:grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--ink);color:var(--sheet);font-size:12px}
.best{margin:0;font-size:13px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.best b{color:var(--ink)}
.seg{display:flex;align-items:center;gap:10px}
.seg-lbl{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-soft);white-space:nowrap}
.seg-btns{display:flex;flex:1;min-width:0;border:2px solid var(--ink);border-radius:14px;overflow:hidden;background:var(--sheet)}
.seg-btns button{flex:1 1 0;min-width:0;min-height:40px;padding:6px 4px;border:0;border-radius:0;box-shadow:none;font-size:14px;background:transparent}
.seg-btns button+button{border-left:2px solid var(--ink)}
.seg-btns button[aria-checked="true"]{background:var(--marker);color:var(--on-marker)}
.seg-btns button:active:not(:disabled){transform:none}
.seg-btns button:focus-visible{outline-offset:-5px}
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 12px}
.foot a{font-size:12px;color:var(--ink-soft)}

/* Lobby */
.lobby-grid{display:grid;grid-template-columns:1fr;gap:10px}
.lobby-card{display:flex;flex-direction:column;gap:8px;padding:12px;border:2px dashed var(--ink-soft);border-radius:16px}
.lobby-h{margin:0;font-weight:900;font-size:15px}
.join-row{display:flex;gap:8px}
.join-row button{flex:none;min-width:88px}
.room-code{margin:0;font-family:var(--f-display);font-size:56px;line-height:1;letter-spacing:.18em;text-align:center;font-variant-numeric:tabular-nums}
.hosting{display:flex;flex-direction:column;gap:10px;align-items:stretch}
.invite-url{margin:0;font-size:12px;line-height:1.5;color:var(--ink-soft);text-align:center;word-break:break-all;-webkit-user-select:text;user-select:text}
.invite-url:empty{display:none}
.waiting{margin:0;display:flex;align-items:center;justify-content:center;gap:8px;font-weight:700;color:var(--ink-soft)}
.waiting::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--ink-soft);animation:blink 1s ease-in-out infinite}
@keyframes blink{50%{opacity:.2}}
.lobby-err{margin:0;padding:8px 12px;border-radius:12px;background:var(--paper);border:2px solid var(--danger);color:var(--ink);font-weight:700;line-height:1.6}

/* Drawing */
.sheet-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.who{font-size:12px;font-weight:900;letter-spacing:.06em;padding:4px 10px;border-radius:999px;color:var(--on-marker);background:var(--p1);white-space:nowrap}
.who.p2{background:var(--p2)}
.odai{display:flex;align-items:baseline;gap:8px;min-width:0}
.odai .lbl{font-size:12px;font-weight:700;color:var(--ink-soft);letter-spacing:.08em}
.odai strong{font-family:var(--f-display);font-weight:400;font-size:26px;line-height:1.15;padding:0 .25em;background:var(--marker);color:var(--on-marker);border-radius:6px}
.sheet-head .small{margin-left:auto}
.pad-wrap{position:relative;width:min(100%,42vh,360px);width:min(100%,42dvh,360px);max-width:100%;aspect-ratio:1;margin-inline:auto;flex:none}
#pad{width:100%;height:100%;display:block;touch-action:none;border-radius:16px;border:2px dashed var(--ink-soft);background:var(--pad);cursor:crosshair}
.pad-empty{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--f-display);font-size:20px;color:var(--pad-hint);pointer-events:none}
.ink{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;color:var(--ink-soft)}
.ink-bar{flex:1;height:10px;border:2px solid var(--ink);border-radius:999px;overflow:hidden;background:var(--paper)}
.ink-bar i{display:block;height:100%;width:100%;background:var(--ink);transition:width .12s linear}
.ink.low .ink-bar i{background:var(--danger)}
.ink.shake{animation:shake .35s}
@keyframes shake{20%{translate:-4px 0}40%{translate:4px 0}60%{translate:-3px 0}80%{translate:2px 0}}
#inkPct{min-width:3.2em;text-align:right;font-variant-numeric:tabular-nums;color:var(--ink)}
.ink-bar{position:relative}
.ink-min{position:absolute;top:0;bottom:0;left:calc(100% * (1 - var(--ink-min, .4)));width:3px;margin-left:-1.5px;background:var(--danger)}
.palette{display:flex;gap:6px;justify-content:center;padding:4px 2px}
.sw{flex:1 1 0;min-width:0;max-width:34px;min-height:0;aspect-ratio:1;padding:0;border-radius:50%;border:2px solid var(--ink);box-shadow:none;background:var(--sw)}
.sw:active:not(:disabled){transform:scale(.9);box-shadow:none}
.sw[aria-checked="true"]{box-shadow:0 0 0 2px var(--sheet),0 0 0 4.5px var(--ink);transform:scale(1.06)}
.req{margin:0;min-height:1.6em;font-size:13px;font-weight:700;line-height:1.6;color:var(--ink-soft)}
.req.todo{color:var(--danger)}
.req.ok{color:var(--ink)}
.req.ok::before{content:"";display:inline-block;width:.55em;height:.95em;margin:0 .45em -.05em .15em;border:solid var(--ink);border-width:0 3px 3px 0;transform:rotate(40deg)}
.hint{margin:0;font-size:12.5px;line-height:1.6;color:var(--ink-soft)}
#done{flex-grow:1.4}

/* Waiting for the other player */
.wait-body{display:flex;align-items:center;gap:14px}
#mini{width:112px;height:112px;flex:none;border-radius:12px;border:2px dashed var(--ink-soft);background:var(--pad)}

/* Aim */
.aimbar{position:absolute;left:0;right:0;bottom:0;display:flex;flex-direction:column;align-items:center;gap:10px;padding:10px 16px 16px;z-index:2;pointer-events:none}
.aimbar>*{pointer-events:auto}
.aim-info{display:flex;align-items:center;gap:8px;max-width:100%;padding:5px 14px 5px 5px;background:var(--sheet);border:2px solid var(--ink);border-radius:999px;font-size:13px;font-weight:700}
.aim-info.solo{padding-left:14px}
.aimbar .row{width:100%;max-width:420px}
.aimbar button{min-height:56px;font-size:17px}

/* Result */
.eyebrow{margin:0;font-size:12px;font-weight:900;letter-spacing:.12em;color:var(--danger)}
.res-title{margin:0;font-family:var(--f-display);font-weight:400;font-size:clamp(34px,9vw,44px);line-height:1.15;text-wrap:balance}
.res-sub{margin:0;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.newbest{align-self:flex-start;margin:0;padding:3px 10px;font-weight:900;font-size:13px;background:var(--marker);color:var(--on-marker);border-radius:6px;transform:rotate(-2deg)}
.gal-h{margin:4px 0 0;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--ink-soft)}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(68px,1fr));gap:8px;max-height:min(24vh,200px);overflow-y:auto;padding:2px}
.gallery figure{margin:0;display:flex;flex-direction:column;align-items:center;gap:2px;min-width:0}
.gallery canvas{width:60px;height:60px}
.gallery figcaption{font-size:11px;font-weight:700;color:var(--ink-soft);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gallery .fallen figcaption{color:var(--danger)}
.ad-slot{min-height:60px;margin-block:4px;display:flex;justify-content:center;overflow:hidden}
.res-actions button{flex:1 1 0}

/* Timer (対戦で絵をかくときだけ) */
.timer{margin-left:auto;min-width:3.4em;padding:3px 10px;border:2px solid var(--ink);border-radius:999px;background:var(--sheet);font-weight:900;font-size:15px;text-align:center;font-variant-numeric:tabular-nums;white-space:nowrap}
.timer.warn{background:var(--danger);border-color:var(--danger);color:var(--sheet);animation:blink 1s ease-in-out infinite}
.timer+.small{margin-left:0}

/* Ranking */
.rank-entry{display:flex;flex-direction:column;gap:8px;padding:12px;border:2px dashed var(--ink-soft);border-radius:16px;margin:0}
.rank-entry input,.join-row input{flex:1;min-width:0}
.name-input{font-family:var(--f-body);font-size:17px;font-weight:700;letter-spacing:0;text-align:left}
.rated-card{border-style:solid;border-color:var(--ink)}
.match-note{text-align:center}
.res-rate{margin:0;font-weight:900;font-variant-numeric:tabular-nums}
.res-rate .up{color:var(--ink);background:var(--marker);padding:0 .3em;border-radius:4px}
.res-rate .down{color:var(--danger)}
.rank-list .meta{font-weight:700;font-size:12px;color:var(--ink-soft);margin-left:4px}
.rank-list li.mine .meta{color:inherit}
.rank-me{margin:0;font-size:13px;font-weight:700;color:var(--ink-soft);text-align:center}
.rank-msg{margin:0;padding:8px 12px;border-radius:12px;background:var(--paper);border:2px solid var(--ink);font-weight:700;line-height:1.6}
.rank-msg.err{border-color:var(--danger)}
.rank-tabs{display:flex;flex-direction:column;gap:6px}
.rank-tabs .seg-btns button{min-height:36px;font-size:13px}
.rank-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;min-height:120px;max-height:min(38vh,320px);overflow-y:auto}
.rank-list li{display:grid;grid-template-columns:2.4em 1fr auto;align-items:baseline;gap:8px;padding:7px 4px;border-bottom:1px solid var(--grid-major)}
.rank-list li.mine{background:var(--marker);color:var(--on-marker);border-radius:8px}
.rank-list .no{font-family:var(--f-display);font-size:18px;text-align:center}
.rank-list .nm{font-weight:700;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-list .val{font-weight:900;font-variant-numeric:tabular-nums;white-space:nowrap}
.rank-list .sub{font-weight:700;font-size:12px;color:var(--ink-soft);margin-left:4px}
.rank-list li.mine .sub{color:inherit}
.rank-list .empty{display:block;border:0;color:var(--ink-soft);text-align:center;padding:24px 4px}

/* Toast */
.toast{position:absolute;left:50%;top:64px;translate:-50% 0;max-width:calc(100% - 32px);padding:8px 16px;background:var(--ink);color:var(--sheet);border-radius:999px;font-weight:700;font-size:14px;text-align:center;z-index:6;box-shadow:0 6px 20px var(--shadow)}

.load-err{position:absolute;left:16px;right:16px;bottom:16px;margin:0;padding:14px 16px;background:var(--sheet);border:2px solid var(--danger);border-radius:14px;line-height:1.6;z-index:5}

@media (min-width:640px){
  .lobby-grid{grid-template-columns:1fr 1fr}
}
@media (min-width:900px) and (min-height:560px){
  .sheet{left:auto;right:28px;top:50%;bottom:auto;margin:0;width:420px;max-height:calc(100% - 40px);transform:translateY(-50%);border-bottom:2px solid var(--ink);border-radius:22px;box-shadow:0 10px 32px var(--shadow)}
  .pad-wrap{width:min(100%,56vh,372px)}
  .lobby-grid{grid-template-columns:1fr}
  .logo{font-size:48px}
}
@media (prefers-reduced-motion: reduce){
  .sheet.in,.ink.shake,.waiting::before{animation:none}
  button,.ink-bar i{transition:none}
}