:root {
  --ink: #1f2228;
  --ink-soft: #5c616c;
  --bg: #eeeff1;
  --paper: #ffffff;
  --line: #d6d8dd;
  --primary: #3b4a8f;
  --primary-dark: #263266;
  --board: #2b2d33;   /* 盤のまわりは色みのない灰色（タイルの色の見え方を変えないように） */
  --board-ink: #e9eaee;
  --board-soft: #a9adb8;
  --accent: #f0a63a;
  --ok: #1f8a4c;
  --ng: #c23b2e;
  --gold: #f2c14e;
  --font: "Zen Kaku Gothic New", system-ui, sans-serif;
  --num: "Martian Mono", ui-monospace, "Zen Kaku Gothic New", monospace;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-weight: 500; line-height: 1.7; line-break: strict; }
.hidden { display: none !important; }
.nw { white-space: nowrap; }

.g-head { display: flex; align-items: center; gap: 10px; padding: 10px 16px; max-width: 520px; margin: 0 auto; font-size: 13px; font-weight: 900; }
.g-brand { color: var(--ink-soft); text-decoration: none; white-space: nowrap; }
.g-title { flex: 1; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.g-head [data-mg-account] a { color: var(--primary-dark); text-decoration: none; }

main { max-width: 520px; margin: 0 auto; padding: 0 12px 24px; }
.play { position: relative; user-select: none; -webkit-user-select: none; }

/* 残り時間・見つけた・ミス */
.bar { display: grid; grid-template-columns: 1.3fr 1fr 1fr auto; gap: 8px; }
.box { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 4px 8px; text-align: center; min-width: 0; }
.lbl { font-size: 12px; font-weight: 900; color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.val { font: 700 26px/1.2 var(--num); font-variant-numeric: tabular-nums; white-space: nowrap; }
.val small { font: 900 14px/1 var(--font); color: var(--ink-soft); margin-left: 2px; }
.time-box.low .val { color: var(--ng); }
.pop { position: absolute; right: 5px; bottom: 6px; font: 700 14px/1 var(--num); color: var(--ok); opacity: 0; pointer-events: none; }
.pop.minus { color: var(--ng); font-family: var(--font); font-weight: 900; right: 4px; }
.pop.on { animation: pop 0.6s ease-out; }
.pop.minus.on { animation: pop 0.9s ease-out; }
@keyframes pop { 0% { opacity: 0; transform: translateY(6px) scale(0.8); } 25% { opacity: 1; transform: translateY(0) scale(1.15); } 100% { opacity: 0; transform: translateY(-6px) scale(1); } }
.menu-btn { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px; padding: 4px 6px; color: var(--ink); font: 900 11px/1.2 var(--font); cursor: pointer; }
.menu-btn span { color: var(--ink-soft); }
.meter { height: 8px; margin: 8px 0 10px; border-radius: 99px; background: var(--line); overflow: hidden; }
.meter i { display: block; height: 100%; width: 100%; background: var(--accent); border-radius: 99px; transform-origin: left center; }

/* 盤 */
.card-b { background: var(--board); color: var(--board-ink); border-radius: 18px; padding: 8px 10px 10px; box-shadow: 0 10px 28px rgba(30, 32, 38, 0.22); }
.b-head { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; font-size: 13px; font-weight: 900; color: var(--board-soft); margin-bottom: 6px; }
.b-head > :first-child { text-align: left; }
.b-head > :last-child { text-align: right; font-family: var(--num); font-weight: 700; }
.b-theme { padding: 0 10px; border-radius: 99px; background: rgba(255, 255, 255, 0.1); color: var(--board-ink); }
.board-wrap { position: relative; width: 100%; max-width: 440px; margin: 0 auto; aspect-ratio: 1 / 1; border-radius: 12px; transition: box-shadow 0.15s; }
.board-wrap.hit { box-shadow: 0 0 0 3px #8be0ae; }
.board { display: grid; width: 100%; height: 100%; gap: var(--gap, 4px); padding: var(--gap, 4px); border-radius: 12px; background: #808186; touch-action: manipulation; } /* すき間は中間の灰色（暗い色だと、となりの色との見比べが難しくなる） */
.tile { display: block; width: 100%; height: 100%; min-width: 0; padding: 0; margin: 0; border: 0; border-radius: var(--rad, 10px); cursor: pointer; outline: none; }
.tile:focus-visible { box-shadow: 0 0 0 3px #fff, 0 0 0 5px #000; }
.tile.ng { animation: shake 0.3s; box-shadow: 0 0 0 3px #ffb0a6; }
@keyframes shake { 25% { transform: translateX(-5px); } 75% { transform: translateX(5px); } }
@media (prefers-reduced-motion: reduce) { .tile.ng { animation: none; } .minus-big.on { animation: none; opacity: 1; } .pop.on, .pop.minus.on { animation: none; opacity: 0; } .board-wrap { transition: none; } }
.count, .end { position: absolute; inset: 0; display: grid; place-items: center; border-radius: 12px; background: var(--board); font: 700 88px/1 var(--num); color: var(--accent); }
.end { font: 900 34px/1 var(--font); background: rgba(43, 45, 51, 0.88); grid-auto-flow: row; align-content: center; gap: 10px; text-align: center; }
.end small { display: block; font-size: 15px; color: #fff; padding: 0 16px; line-height: 1.5; }
.tile.late { box-shadow: 0 0 0 3px #fff, 0 0 0 6px var(--accent); }
/* まちがいの「−3秒」（盤の上に0.5秒ほど） */
.minus-big { position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none; font: 900 72px/1 var(--font); color: #fff; text-shadow: 0 0 2px #c23b2e, 0 0 18px rgba(194, 59, 46, 0.9), 0 4px 0 #c23b2e; }
.minus-big.on { animation: minus 0.55s ease-out forwards; }
@keyframes minus { 0% { opacity: 0; transform: scale(0.8); } 20% { opacity: 1; transform: scale(1.05); } 70% { opacity: 1; } 100% { opacity: 0; transform: scale(1); } }
.meter.red { background: #f3c4bf; }
.meter.red i { background: var(--ng); }
.b-msg { margin: 8px 0 0; text-align: center; font-size: 14px; font-weight: 900; color: var(--board-soft); min-height: 1.5em; }

/* タイトル・結果（盤を隠して全体を見せる） */
.play.menu .bar, .play.menu .meter, .play.menu .card-b { display: none; }
.card-ui { width: 100%; max-width: 420px; margin: 0 auto; background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 20px 16px 16px; text-align: center; box-shadow: 0 10px 30px rgba(29, 36, 51, 0.1); }
.logo { margin: 0; font: 900 clamp(24px, 8vw, 32px)/1.3 var(--font); letter-spacing: 0.04em; }
.logo span { display: inline-block; white-space: nowrap; }
.day { margin: 2px 0 10px; font-size: 13px; color: var(--ink-soft); font-weight: 900; }
.demo { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; width: 132px; margin: 0 auto 12px; padding: 7px; border-radius: 14px; background: var(--board); }
.demo i { display: block; aspect-ratio: 1 / 1; border-radius: 6px; }
.daily-box { border: 2px solid var(--primary); border-radius: 16px; padding: 12px; margin-bottom: 10px; }
.daily-lbl { font-size: 12px; font-weight: 900; color: var(--ink-soft); letter-spacing: 0.1em; }
.daily-name { font: 900 26px/1.4 var(--font); color: var(--primary-dark); }
.strip { display: flex; height: 14px; max-width: 240px; margin: 4px auto 6px; border-radius: 99px; overflow: hidden; }
.strip i { flex: 1; }
.daily-par { font-size: 14px; font-weight: 900; color: var(--ink); margin-top: 2px; }
.daily-note { margin: 4px 0 8px; font-size: 13px; color: var(--ink-soft); }
.done { font-size: 15px; font-weight: 900; margin-top: 6px; }
.howto { list-style: none; margin: 12px 0 0; padding: 10px 12px; background: var(--bg); border-radius: 12px; text-align: left; font-size: 14px; font-weight: 700; }
.howto li { display: flex; align-items: baseline; gap: 6px; padding: 3px 0; }
.howto .num { flex: none; font-weight: 900; color: var(--primary); }
.ng-t { color: var(--ng); margin: 0 2px; }
.stats { font-size: 13px; color: var(--ink-soft); font-weight: 700; margin: 10px 0 0; }

.btn { display: block; width: 100%; margin: 8px 0; padding: 14px 10px; border: 0; border-radius: 14px; font: 900 17px/1.2 var(--font); cursor: pointer; background: var(--bg); color: var(--ink); }
.btn small { display: block; font-size: 12px; font-weight: 700; color: var(--ink-soft); margin-top: 4px; }
.btn.primary { background: var(--primary); color: #fff; box-shadow: 0 4px 0 var(--primary-dark); }
.btn.primary:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--primary-dark); }
.btn.sub { font-size: 16px; }
.btn.ghost { background: transparent; border: 2px solid var(--line); color: var(--ink-soft); font-size: 15px; }
.btn.x { background: #000; color: #fff; display: flex; align-items: center; justify-content: center; gap: 8px; }
.btn:disabled { opacity: 0.5; cursor: default; }

.clear-lbl { font-size: 13px; font-weight: 900; color: var(--primary-dark); }
.clear-theme { font-size: 13px; font-weight: 900; color: var(--ink-soft); }
.clear-big { margin: 4px 0; }
.clear-big b { font: 700 64px/1 var(--num); font-variant-numeric: tabular-nums; }
.clear-big span { font: 900 20px/1 var(--font); margin-left: 4px; }
.clear-sub { margin: 0; font-size: 15px; font-weight: 700; }
.best { display: block; width: max-content; margin: 10px auto 0; padding: 2px 12px; border-radius: 999px; background: var(--gold); font-weight: 900; font-size: 13px; }
/* 見分けた色の差（最後に見つけた盤の2色） */
.seen { margin: 12px 0 0; padding: 10px; border-radius: 14px; background: var(--board); color: var(--board-ink); }
.seen-lbl { font-size: 12px; font-weight: 900; color: var(--board-soft); }
.seen-sw { display: flex; justify-content: center; gap: 6px; margin: 6px 0; }
.seen-sw i { display: block; width: 64px; height: 64px; border-radius: 10px; }
.seen-txt { font: 900 18px/1.4 var(--font); }
.seen-sub { font-size: 12px; font-weight: 700; color: var(--board-soft); }
.rank { margin: 12px 0; padding: 8px; background: var(--bg); border-radius: 14px; }
.rank-lbl { font-size: 12px; font-weight: 900; color: var(--ink-soft); }
.rank-name { font: 900 22px/1.4 var(--font); }
.rank-basis { font-size: 11px; font-weight: 700; color: var(--ink-soft); }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin: 12px 0 0; }
.facts div { background: var(--bg); border-radius: 12px; padding: 6px 4px; min-width: 0; }
.facts dt { font-size: 11px; font-weight: 900; color: var(--ink-soft); }
.facts dd { margin: 0; font-size: 15px; font-weight: 900; line-height: 1.35; }
.facts dd small { font-size: 12px; color: var(--ink-soft); }
.c-note { margin: 8px 0; padding: 8px 10px; border-radius: 12px; background: #fff6dd; font-size: 13px; font-weight: 700; text-align: left; }
.share { margin: 8px 0; }

.toast { position: absolute; left: 50%; top: 30%; transform: translate(-50%, -50%); z-index: 40; max-width: calc(100% - 24px); padding: 10px 18px; border-radius: 16px; background: rgba(29, 36, 51, 0.92); color: #fff; font-weight: 900; font-size: 15px; text-align: center; pointer-events: none; }

/* 下の解説（ポータルと同じ決まり） */
.guide { margin-top: 28px; background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 22px 20px 12px; font-size: 15px; line-height: 1.85; }
.guide p { margin: 0 0 1em; }
.guide h2 { font: 900 19px/1.4 var(--font); margin: 32px 0 12px; padding-left: 10px; border-left: 5px solid var(--primary); }
.guide h2:first-child { margin-top: 0; }
.guide h3 { display: flex; align-items: baseline; font-size: 16px; margin: 22px 0 6px; line-height: 1.5; }
.guide h3 .num { flex: none; }
.guide ul { padding-left: 1.3em; margin: 0 0 1em; }
.guide li { margin: 6px 0; }
.guide .steps { list-style: none; padding: 0; }
.guide .steps li { display: flex; align-items: baseline; gap: 6px; }
.guide .steps .num { flex: none; font-weight: 900; color: var(--primary); }
.guide details { border-top: 1px solid var(--line); padding: 12px 0; }
.guide details p { margin: 8px 0 4px; }
.guide summary { font-weight: 900; cursor: pointer; }
.guide a { color: var(--primary-dark); }
.g-foot { max-width: 520px; margin: 0 auto; padding: 14px 16px 28px; font-size: 12px; text-align: center; }
.g-foot a { color: var(--ink-soft); }

.card-ui .mg-box { background: var(--bg); border-color: transparent; }
@media (max-width: 360px) {
  .bar { gap: 6px; }
  .box { padding: 4px 6px; }
  .val { font-size: 22px; }
}