:root {
  --orange: #F2692B; --orange-deep: #C24E17; --amber: #FFB547; --cream: #FFF6EA; --ink: #2B1D18; --pink: #FF8FA3;
  --card: #FFF9F0; --muted: #7A6258; --line: #EBD9C6; --good: #2E8B57; --bad: #D9443A;
  --sans: "Noto Sans TC", "PingFang HK", "PingFang TC", "Heiti TC", "Microsoft JhengHei", sans-serif;
  --round: Nunito, "Noto Sans TC", "PingFang HK", sans-serif;
  --sat: env(safe-area-inset-top, 0px); --sab: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px); --sar: env(safe-area-inset-right, 0px);
  color-scheme: light;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body {
  margin: 0; height: 100%; overflow: hidden; background: #140F33; color: var(--ink);
  font: 15px/1.5 var(--sans); overscroll-behavior: none; touch-action: none;
  -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; -webkit-text-size-adjust: 100%;
}
body { position: fixed; inset: 0; }
[hidden] { display: none !important; }
canvas#game { position: fixed; inset: 0; width: 100vw; height: 100vh; height: 100dvh; display: block; touch-action: none; }

/* ---------- screens ---------- */
.screen { position: fixed; inset: 0; z-index: 10; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: calc(16px + var(--sat)) calc(16px + var(--sar)) calc(16px + var(--sab)) calc(16px + var(--sal)); }
.modal { background: rgba(20, 12, 36, 0.55); backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); animation: fade .2s ease-out; overflow-y: auto; touch-action: pan-y; justify-content: safe center; }
.card { width: min(420px, 100%); background: var(--card); border: 3px solid var(--ink); border-radius: 22px; padding: 22px 20px 18px;
  box-shadow: 0 8px 0 var(--ink), 0 20px 40px -10px rgba(0,0,0,.5); text-align: center; animation: pop .28s cubic-bezier(.2,1.4,.4,1); margin: auto 0; }
.card h2 { font: 900 26px/1.2 var(--sans); margin: 0 0 14px; }
.card h3 { font: 900 18px/1.2 var(--sans); margin: 14px 0 8px; }
@keyframes pop { from { transform: scale(.85) translateY(20px); opacity: 0 } }
@keyframes fade { from { opacity: 0 } }

/* ---------- loading ---------- */
#loading { background: linear-gradient(#FFB86B, #F2692B); color: #fff; font-weight: 900; }
.load-zai { width: 72px; height: 88px; margin: 0 auto 12px; border-radius: 22px; background: linear-gradient(#F9AE57, #EC7F2C);
  border: 3px solid var(--ink); position: relative; animation: bounce .5s ease-in-out infinite alternate; }
.load-zai::before, .load-zai::after { content: ""; position: absolute; top: 30px; width: 12px; height: 12px; border-radius: 50%; background: var(--ink); }
.load-zai::before { left: 16px; } .load-zai::after { right: 16px; }
@keyframes bounce { to { transform: translateY(-12px) scale(1.03, .97); } }

/* ---------- title ---------- */
#title { justify-content: space-between; pointer-events: none; }
#title > * { pointer-events: auto; }
.title-top { text-align: center; margin-top: 4vh; }
.logo { display: inline-flex; flex-direction: column; align-items: center; transform: rotate(-4deg); }
.logo-brand { font: 900 clamp(40px, 13vw, 72px)/0.9 var(--round); color: var(--cream); letter-spacing: -.02em;
  -webkit-text-stroke: 3px var(--ink); paint-order: stroke fill; text-shadow: 4px 5px 0 var(--ink); }
.logo-dash { margin-top: 2px; font: 900 clamp(34px, 11vw, 60px)/0.9 var(--round); color: var(--orange); letter-spacing: .12em;
  -webkit-text-stroke: 3px var(--ink); paint-order: stroke fill; text-shadow: 4px 5px 0 var(--ink); background: var(--amber);
  padding: 4px 14px 6px 22px; border: 3px solid var(--ink); border-radius: 12px; transform: rotate(3deg); }
.logo-sub { margin-top: 14px; display: inline-block; font: 900 22px/1 var(--sans); color: #fff; background: var(--ink); padding: 8px 16px; border-radius: 999px; letter-spacing: .1em; }
.logo-sub b { color: var(--amber); }
.tagline { margin: 12px 0 0; font-weight: 900; color: #fff; text-shadow: 0 2px 0 var(--ink), 0 0 12px rgba(0,0,0,.4); }
.title-bottom { width: min(360px, 100%); display: grid; gap: 10px; margin-bottom: 2vh; }
.best-line, .now-line { text-align: center; font-weight: 900; color: #fff; text-shadow: 0 2px 0 var(--ink); margin: 0; min-height: 1.2em; }
.now-line { font-weight: 700; font-size: 13px; opacity: .95; }

/* ---------- buttons ---------- */
.btn { appearance: none; border: 3px solid var(--ink); border-radius: 999px; font: 900 18px/1 var(--sans); padding: 14px 20px; cursor: pointer;
  color: var(--ink); background: var(--cream); box-shadow: 0 5px 0 var(--ink); transition: transform .06s, box-shadow .06s; width: 100%; touch-action: manipulation; }
.btn:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--ink); }
.btn-main { background: var(--orange); color: #fff; text-shadow: 0 2px 0 var(--orange-deep); font-size: 22px; padding: 16px 20px; }
.btn-sub { background: var(--amber); }
.btn-ghost { background: transparent; box-shadow: none; border-color: transparent; text-decoration: underline; }
.btn-small { width: auto; font-size: 17px; padding: 12px 18px; }
.btn[disabled] { opacity: .6; pointer-events: none; }
.btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.card > .btn + .btn { margin-top: 12px; }
.link-btn { background: none; border: 0; color: var(--muted); font: 700 14px var(--sans); text-decoration: underline; margin-top: 12px; padding: 6px; cursor: pointer; }

.icon-btn { position: fixed; z-index: 12; width: 46px; height: 46px; border-radius: 50%; border: 3px solid var(--ink); background: var(--cream);
  box-shadow: 0 4px 0 var(--ink); display: grid; place-items: center; padding: 0; cursor: pointer; touch-action: manipulation; }
.icon-btn:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--ink); }
.icon-btn svg { width: 22px; height: 22px; fill: var(--ink); }
#btnPause { top: calc(12px + var(--sat)); right: calc(12px + var(--sar)); }
#btnSound { top: calc(12px + var(--sat)); right: calc(12px + var(--sar)); }
body.playing #btnSound { right: calc(66px + var(--sar)); }

/* ---------- mode picker / tabs ---------- */
.mode-pick { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mode-btn { appearance: none; border: 3px solid var(--ink); border-radius: 16px; background: rgba(255,246,234,.82); padding: 8px 10px; cursor: pointer;
  display: grid; gap: 1px; text-align: center; box-shadow: 0 4px 0 var(--ink); touch-action: manipulation; color: var(--ink); font-family: var(--sans); }
.mode-btn b { font: 900 18px/1.1 var(--sans); }
.mode-btn span { font-size: 11px; color: var(--muted); font-weight: 700; }
.mode-btn[aria-checked="true"] { background: var(--ink); color: #fff; transform: translateY(2px); box-shadow: 0 2px 0 var(--ink); }
.mode-btn[aria-checked="true"] span { color: var(--amber); }
.mode-btn[data-mode="tight"][aria-checked="true"] b::after { content: " ⚡"; }
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin: -4px 0 12px; background: #F1E4D4; padding: 4px; border-radius: 999px; }
.tab { appearance: none; border: 0; border-radius: 999px; padding: 8px; font: 900 15px var(--sans); background: transparent; color: var(--muted); cursor: pointer; touch-action: manipulation; }
.tab[aria-selected="true"] { background: var(--orange); color: #fff; box-shadow: 0 2px 0 var(--orange-deep); }
.mode-tag { display: inline-block; font: 900 12px/1 var(--sans); padding: 4px 8px; border-radius: 999px; background: var(--ink); color: var(--amber); vertical-align: 2px; }
.mode-tag:empty { display: none; }
.dot.mode { background: linear-gradient(90deg, #FFF6EA 50%, #2B1D18 50%); }

/* ---------- how ---------- */
.how-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.how-cell { border: 3px solid var(--ink); border-radius: 16px; padding: 12px 8px; background: #fff; display: grid; gap: 2px; }
.how-cell:first-child { background: #FFE9D6; } .how-cell:last-child { background: #DDF3EC; }
.how-cell b { font-size: 18px; } .how-cell span { font-size: 13px; color: var(--muted); }
.how-ico { font-size: 30px; }
.how-list { text-align: left; padding: 0; margin: 14px 0 16px; list-style: none; display: grid; gap: 8px; font-size: 14px; }
.how-list li { display: flex; gap: 10px; align-items: flex-start; }
.dot { flex: none; width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--ink); margin-top: 3px; }
.dot.coin { background: var(--amber); } .dot.stamp { background: #E23B3B; } .dot.fever { background: linear-gradient(45deg, #FFB547, #FF8FA3); }
.dot.heart { background: var(--pink); } .dot.map { background: #37C0A0; }

/* ---------- over ---------- */
.over-kicker { margin: 0; font-weight: 900; color: var(--muted); }
.over-score { font: 900 56px/1.05 var(--round); color: var(--orange); -webkit-text-stroke: 2px var(--ink); paint-order: stroke fill; text-shadow: 3px 4px 0 var(--ink); margin: 4px 0; }
.over-best { font-weight: 900; min-height: 1.4em; }
.over-best.new { color: #fff; background: var(--good); display: inline-block; padding: 2px 12px; border-radius: 999px; border: 2px solid var(--ink); animation: pop .4s; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 12px 0; }
.stat { background: #fff; border: 2px solid var(--line); border-radius: 12px; padding: 8px 6px; }
.stat b { display: block; font: 900 20px/1.1 var(--round); color: var(--ink); }
.stat span { font-size: 12px; color: var(--muted); }
.submit { text-align: left; margin-top: 6px; }
.submit label { font-size: 13px; font-weight: 700; color: var(--muted); display: block; margin-bottom: 6px; }
.submit-row { display: flex; gap: 8px; }
.submit input { flex: 1; min-width: 0; font: 900 22px/1 var(--round); letter-spacing: .12em; padding: 10px 12px; border: 3px solid var(--ink); border-radius: 14px; background: #fff; color: var(--ink);
  -webkit-user-select: text; user-select: text; touch-action: manipulation; }
.submit input:focus { outline: 3px solid var(--amber); outline-offset: 1px; }
.form-msg { min-height: 1.3em; margin: 6px 0 0; font-size: 13px; font-weight: 700; }
.form-msg.err { color: var(--bad); } .form-msg.ok { color: var(--good); }

.board-wrap { margin-top: 4px; }
.board { list-style: none; padding: 0; margin: 0; display: grid; gap: 5px; text-align: left; }
.board li { display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 8px; background: #fff; border: 2px solid var(--line); border-radius: 12px; padding: 6px 10px; font-weight: 700; }
.board li .rk { font: 900 16px var(--round); text-align: center; }
.board li:nth-child(1) .rk { color: #D4A017; } .board li:nth-child(2) .rk { color: #8A8F98; } .board li:nth-child(3) .rk { color: #B87333; }
.board li .id { font-family: var(--round); letter-spacing: .06em; }
.board li .sc { font: 900 16px var(--round); color: var(--orange); }
.board li.me { background: #FFF1DC; border-color: var(--orange); }
.board li.empty { grid-template-columns: 1fr; text-align: center; color: var(--muted); }
.board-me, .board-note { font-size: 13px; font-weight: 700; color: var(--muted); margin: 8px 0 0; }

/* ---------- toast ---------- */
.toast { position: fixed; left: 50%; bottom: calc(24px + var(--sab)); transform: translate(-50%, 20px); z-index: 30; opacity: 0; pointer-events: none;
  background: var(--ink); color: #fff; font-weight: 900; padding: 10px 16px; border-radius: 999px; transition: .25s; max-width: calc(100% - 32px); text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; } }
@media (max-height: 560px) and (orientation: landscape) {
  #title { flex-direction: row; align-items: stretch; justify-content: space-between; }
  .title-top { margin-top: 0; text-align: left; align-self: flex-start; }
  .logo { align-items: flex-start; }
  .logo-brand { font-size: 42px; } .logo-dash { font-size: 30px; } .logo-sub { font-size: 16px; margin-top: 10px; } .tagline { font-size: 13px; }
  .title-bottom { width: 300px; align-self: flex-end; margin-bottom: 0; gap: 6px; }
  .mode-btn { padding: 5px 8px; } .mode-btn b { font-size: 15px; } .mode-btn span { display: none; }
  .btn-main { font-size: 20px; padding: 12px 18px; } .btn { padding: 11px 16px; font-size: 16px; }
  .btn-row { margin-top: 0; }
  .card { padding: 16px; } .over-score { font-size: 40px; } .stats { grid-template-columns: repeat(3, 1fr); gap: 6px; margin: 8px 0; }
  .stat { padding: 5px 4px; } .stat b { font-size: 17px; }
}