/* NVM – Never mind, ich kann Schnittgrößen
 * Hell und Dunkel, jeweils ruhiger, einfarbiger Hintergrund
 * Schriften: Source Sans 3 (Oberfläche), Source Serif 4 (Überschriften), KaTeX (Formeln),
 * Barlow Semi Condensed (nur Logo und N/V/M-Kennungen) */

/* ============================================================ Tokens */
:root {
  --font-ui: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-head: "Source Serif 4", "KaTeX_Main", Georgia, serif;
  --font-logo: "Barlow Semi Condensed", "Arial Narrow", sans-serif;
  --font-math: "KaTeX_Main", "Times New Roman", serif;
  --font-math-i: "KaTeX_Math", "Times New Roman", serif;
  --radius: 8px;
  --radius-card: 10px;
}

:root,
[data-theme="light"] {
  --paper: #f5f7fa;
  --sheet: #ffffff;
  --ink: #1c2330;
  --ink-soft: #5b6676;
  --line: #ccd6e2;
  --n: #13805a;
  --v: #1d5fc2;
  --m: #c8323b;
  --load: #8a4a17;
  --react: #0e7469;
  --marker: #ffe066;
  --warn: #e3a008;
  --good: #15803d;
  --bad: #c0262d;
  --btn: #1c2330;
  --btn-ink: #f5f7fa;
  --shadow: 0 1px 0 rgba(28, 35, 48, .06), 0 6px 18px -10px rgba(28, 35, 48, .25);
  --fill-alpha: .13;
  --tip-mix: 35%;
  color-scheme: light;
}

[data-theme="dark"] {
  --paper: #131417;
  --sheet: #1c1e22;
  --ink: #e9ebee;
  --ink-soft: #9ca3ad;
  --line: #2f333a;
  --n: #4fd08f;
  --v: #79a8ff;
  --m: #ff7a7a;
  --load: #f0ae62;
  --react: #45c9bb;
  --marker: #f3d046;
  --warn: #e3a008;
  --good: #4ade80;
  --bad: #f87171;
  --btn: #e9ebee;
  --btn-ink: #131417;
  --shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 8px 22px -14px rgba(0, 0, 0, .7);
  --fill-alpha: .16;
  --tip-mix: 16%;
  color-scheme: dark;
}

/* ============================================================ Grundlagen */
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100vh;
  font: 400 17px/1.45 var(--font-ui);
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
[hidden] { display: none !important; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--marker); outline-offset: 2px; }
h1, h2, h3 { margin: 0; font-family: var(--font-head); font-weight: 600; letter-spacing: -.005em; }
kbd {
  padding: 0 .35em; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px;
  background: var(--sheet); font: 600 .85em var(--font-ui);
}
.muted { color: var(--ink-soft); }

/* Formeln (KaTeX im Text, KaTeX-Schriften in SVG) */
.katex { font-size: 1.08em; line-height: 1.2; }
.katex .mfrac { padding: 0 .06em; }
.mnw { white-space: nowrap; }
.sv .m-i { font-family: var(--font-math-i); font-style: italic; font-weight: 400; }
.sv .m-r { font-family: var(--font-math); font-style: normal; font-weight: 400; }

/* ============================================================ Kopfzeile */
.bar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 18px;
  padding: 10px 24px 12px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.brand { padding: 0; border: 0; background: none; cursor: pointer; line-height: 0; }
.wordmark { display: block; width: 116px; height: 44px; overflow: visible; }
.wordmark .hm-beam, .wm-shape { stroke-width: 10; stroke-linejoin: round; }
.wm-fn { fill: color-mix(in srgb, var(--n) 30%, transparent); }
.wm-fv { fill: color-mix(in srgb, var(--v) 30%, transparent); }
.wm-fm { fill: color-mix(in srgb, var(--m) 30%, transparent); }

.hud { flex: 1; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 22px; font-weight: 600; }
.hud .k { margin-right: 4px; color: var(--ink-soft); font-weight: 400; }
.hud .hud-mode { font-weight: 700; }
.hud .lives { display: inline-flex; gap: 3px; }
.hud .heart { width: 17px; height: 16px; fill: var(--m); transition: fill .3s; }
.hud .heart.lost { fill: none; stroke: var(--ink-soft); stroke-width: 1.6; opacity: .55; }
.hud .pop { color: var(--good); font-weight: 700; animation: pop 1.1s ease-out forwards; }
@keyframes pop { 0% { opacity: 0; transform: translateY(6px); } 15% { opacity: 1; transform: none; } 80% { opacity: 1; } 100% { opacity: 0; transform: translateY(-8px); } }

.bar-actions { display: flex; align-items: center; gap: 6px; }
.icon-btn, .text-btn {
  height: 36px; padding: 0 10px; border: 1px solid transparent; border-radius: var(--radius);
  background: transparent; color: var(--ink); cursor: pointer;
}
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: var(--ink); stroke-width: 1.8; vertical-align: middle; }
.icon-btn:hover, .text-btn:hover { border-color: var(--line); background: var(--sheet); }
.text-btn { font-weight: 600; }
#soundBtn[aria-pressed="false"] .snd-wave { opacity: .25; }

.timer { position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; }
.timer-fill { width: 100%; height: 100%; background: var(--n); transform-origin: left; transition: background-color .3s; }
.timer[data-level="warn"] .timer-fill { background: var(--warn); }
.timer[data-level="late"] .timer-fill { background: var(--bad); }

/* ============================================================ Spielfeld */
.game {
  display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 26px;
  max-width: 1360px; margin: 0 auto; padding: 18px 24px 28px;
}
.stage { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.question { max-width: 46ch; font-size: clamp(1.3rem, 1.1rem + .8vw, 1.7rem); line-height: 1.25; }
.question .katex { font-size: 1.02em; }
.hint { margin: 4px 0 0; color: var(--ink-soft); font-size: .95rem; }
.sheet { background: var(--sheet); border: 1px solid var(--line); border-radius: 6px; box-shadow: var(--shadow); }
.system { position: relative; padding: 6px; }
.system svg { display: block; width: 100%; height: min(30vh, 270px); }
.system.tappable svg { cursor: crosshair; touch-action: none; }
.system svg.sv-frame { height: min(48vh, 440px); }

.answers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.answer {
  position: relative; min-height: 120px; padding: 8px 8px 6px;
  border: 1.5px solid var(--line); border-radius: var(--radius-card);
  background: var(--sheet); box-shadow: var(--shadow);
  text-align: left; cursor: pointer;
  transition: border-color .15s, transform .15s;
}
.answer svg { display: block; width: 100%; height: min(17vh, 175px); }
.answer svg.sv-frame { height: min(22vh, 215px); }
.answer .num {
  position: absolute; top: 8px; left: 8px; z-index: 1;
  display: grid; place-items: center; width: 30px; height: 30px;
  border: 1.5px solid var(--ink); border-radius: 50%; background: var(--sheet);
  font: 700 1rem var(--font-ui);
}
.answer .val {
  display: grid; place-items: center; height: min(17vh, 175px); min-height: 100px;
  font: 400 clamp(1.5rem, 1.1rem + 1.4vw, 2.3rem) var(--font-math);
}
.answer .val .katex { font-size: 1.1em; }
.answer .tag { position: absolute; top: 10px; right: 12px; font: 700 .9rem var(--font-ui); }
.answer:hover:not(:disabled) { border-color: var(--ink); }
.answer:hover:not(:disabled) .num { background: var(--marker); color: #1c2330; border-color: #1c2330; }
.answer:active:not(:disabled) { transform: translateY(1px); }
.answer:disabled { cursor: default; }
.answer.is-correct, .answer.is-wrong { border-width: 3px; }
.answer.is-correct { border-color: var(--good); }
.answer.is-correct .num { background: var(--good); color: var(--sheet); border-color: var(--good); }
.answer.is-correct .tag { color: var(--good); }
.answer.is-correct::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius); pointer-events: none;
  background: linear-gradient(100deg, transparent 0 2%, color-mix(in srgb, var(--good) 14%, transparent) 4% 96%, transparent 98%);
  transform-origin: left; animation: swipe .45s ease-out both;
}
.answer.is-wrong { border-color: var(--bad); animation: shake .35s; }
.answer.is-wrong .num { background: var(--bad); color: var(--sheet); border-color: var(--bad); }
.answer.is-wrong .tag { color: var(--bad); }
.answer.is-dim { opacity: .55; }
.answer.no-anim, .answer.no-anim::before { animation: none; }
@keyframes swipe { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes shake { 20% { transform: translateX(-5px); } 40% { transform: translateX(5px); } 60% { transform: translateX(-3px); } 80% { transform: translateX(3px); } }

.solution { display: grid; padding: 4px 6px; }
.solution svg { display: block; width: 100%; height: auto; max-height: 17vh; }
.solution .strip-frame svg { max-height: min(46vh, 430px); }
.solution .strip + .strip { border-top: 1px dashed var(--line); }
.solution-note { margin: 4px 8px 6px; color: var(--ink-soft); font-size: .85rem; }
.tapinfo { padding: 28px; color: var(--ink-soft); text-align: center; }
.tapinfo strong { display: block; margin-bottom: 4px; color: var(--ink); font: 600 1.25rem var(--font-head); }

/* ============================================================ Seitenleiste */
.side {
  position: sticky; top: 76px; align-self: start;
  display: flex; flex-direction: column; gap: 14px; max-height: calc(100vh - 100px);
}
.explain {
  min-height: 200px; padding: 18px 18px 8px; overflow-y: auto;
  border: 1px solid var(--line); border-radius: 6px; background: var(--sheet); box-shadow: var(--shadow);
  font-size: .97rem;
}
.explain p, .explain li { line-height: 1.55; }
.explain .katex { font-size: 1.04em; }
.explain .verdict { margin: 0 0 6px; font: 700 1.55rem/1.15 var(--font-head); }
.explain .verdict.ok { color: var(--good); }
.explain .verdict.no { color: var(--bad); }
.explain .points { margin: 0 0 10px; font-weight: 600; }
.explain .why { margin: 0 0 12px; padding: 8px 10px; border-left: 3px solid var(--bad); background: color-mix(in srgb, var(--bad) 7%, transparent); }
.explain .sol { margin-bottom: 12px; }
.explain .sol p { margin: 0 0 4px; }
.explain section { padding: 10px 0 6px; border-top: 1px solid var(--line); }
.explain h3 { margin-bottom: 4px; font-size: 1.05rem; }
.explain ul { margin: 0; padding-left: 1.1em; }
.explain li { margin: 2px 0; }
.explain .tip { padding: 10px 12px; border-radius: 6px; background: color-mix(in srgb, var(--marker) var(--tip-mix), transparent); }

.actions { display: flex; flex-shrink: 0; gap: 10px; }
.btn {
  flex: 1; min-height: 46px; padding: 0 16px;
  border: 1.5px solid var(--ink); border-radius: var(--radius);
  background: var(--sheet); color: var(--ink); cursor: pointer;
  font: 700 1.05rem var(--font-ui);
}
.btn.primary { background: var(--btn); color: var(--btn-ink); }
.btn:disabled { opacity: .35; cursor: default; }
.btn:not(:disabled):hover { box-shadow: 0 0 0 3px color-mix(in srgb, var(--marker) 70%, transparent); }

/* ============================================================ SVG-Rollen */
.sv text { font-family: var(--font-ui); fill: var(--ink); }
.sv-beam { stroke: var(--ink); stroke-width: 4.2; stroke-linecap: butt; }
.sv-fiber { stroke: var(--ink); stroke-width: 1.1; stroke-dasharray: 6 4; opacity: .75; }
.sv-sup { fill: var(--sheet); stroke: var(--ink); stroke-width: 1.5; stroke-linejoin: round; }
.sv-pin { fill: var(--sheet); stroke: var(--ink); stroke-width: 1.5; }
.sv-sup-wall { stroke: var(--ink); stroke-width: 2.6; stroke-linecap: square; }
.sv-ground { stroke: var(--ink); stroke-width: 1.5; stroke-linecap: square; }
.sv-hatch { stroke: var(--ink-soft); stroke-width: 1; }
.sv-hinge { fill: var(--sheet); stroke: var(--ink); stroke-width: 1.8; }
.sv-react-arrow line, .sv-react-arc { stroke: var(--react); fill: none; stroke-width: 1.8; }
.sv-react-arrow polygon { fill: var(--react); stroke: var(--react); stroke-width: .5; }
.sv-axes line { stroke: var(--ink-soft); }
.sv-axes polygon { fill: var(--ink-soft); stroke: none; }
.sv-dim-tick { stroke: var(--ink-soft); stroke-width: 1.3; }
.sv-load line, .sv-load polyline { stroke: var(--load); }
.sv-load polygon { fill: var(--load); stroke: var(--load); stroke-width: .5; }
.sv-load-line { stroke: var(--load); stroke-width: 1.8; }
.sv-qfill { fill: var(--load); opacity: .1; }
.sv-mband { fill: color-mix(in srgb, var(--load) 6%, transparent); stroke: var(--load); stroke-width: 1; }
.sv-noFill { fill: none; stroke: var(--load); }
.sv-dim { stroke: var(--ink-soft); stroke-width: .9; }
.sv-angle { fill: none; stroke: var(--load); stroke-width: 1.5; }
.sv-axis { stroke: var(--ink-soft); stroke-width: 1.4; }
.sv-frame-thin { stroke: var(--ink-soft); stroke-width: 1.6; stroke-linecap: round; }
text.sv-load-text, text.sv-angle-text { fill: var(--load); font-weight: 600; }
text.sv-name { fill: var(--ink-soft); font-weight: 700; }
text.sv-name-soft, text.sv-dim-text, text.sv-unit, text.sv-note { fill: var(--ink-soft); }
text.sv-dim-sym { fill: var(--ink); }
text.sv-title { fill: var(--ink-soft); font-weight: 600; }
text.sv-react { fill: var(--react); font-weight: 600; }
text.sv-value { font-weight: 700; }
text.sv-qty { font-family: var(--font-logo); font-weight: 800; }
.sv-curve { fill: none; stroke-width: 2.6; stroke-linejoin: round; }
.sv-c-n { stroke: var(--n); } .sv-c-v { stroke: var(--v); } .sv-c-m { stroke: var(--m); }
text.sv-c-n { fill: var(--n); stroke: none; } text.sv-c-v { fill: var(--v); stroke: none; } text.sv-c-m { fill: var(--m); stroke: none; }
.sv-fill { opacity: var(--fill-alpha); }
.sv-f-n { fill: var(--n); } .sv-f-v { fill: var(--v); } .sv-f-m { fill: var(--m); }
.sv-hatchline { fill: none; stroke-width: 1; opacity: .55; }
.sv-sign circle { fill: var(--sheet); stroke-width: 1.6; }
.sv-sign text { font-weight: 700; }
.sv-sign.sv-c-n text { fill: var(--n); } .sv-sign.sv-c-v text { fill: var(--v); } .sv-sign.sv-c-m text { fill: var(--m); }
.sv-draw { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw .7s ease-out forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.sv-cross { stroke: var(--ink); stroke-width: 1.2; stroke-dasharray: 5 4; pointer-events: none; }
text.sv-cross-text { font-weight: 700; pointer-events: none; }
.sv-target { fill: var(--good); opacity: .14; }
.sv-target-line { stroke: var(--good); stroke-width: 1.6; stroke-dasharray: 6 4; }
.sv-click-ok { stroke: var(--good); stroke-width: 3; }
.sv-click-bad { stroke: var(--bad); stroke-width: 3; }

/* ============================================================ Start */
.screen { min-height: 100vh; }
.menu-inner {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  grid-template-areas: "hero hero" "modes settings" "look settings";
  grid-template-rows: auto auto 1fr; align-items: start; gap: 28px 48px;
  max-width: 1180px; margin: 0 auto; padding: 40px 28px 48px;
}
.hero { grid-area: hero; }
.credit { grid-column: 1 / -1; margin: 8px 0 0; padding-top: 16px; border-top: 1px solid var(--line, currentColor); color: var(--ink-soft); font-size: .85rem; }
.hero-mark { display: block; width: min(620px, 100%); height: auto; margin-left: -10px; }
.hm-letter { font: 800 170px var(--font-logo); }
.hm-n { fill: var(--n); } .hm-v { fill: var(--v); } .hm-m { fill: var(--m); }
.hm-beam { stroke: var(--ink); stroke-width: 6; stroke-linecap: round; }
/* Verläufe zeichnen sich, bleiben kurz stehen, blenden aus und beginnen von vorn (Zyklus 4,6 s) */
.hm-shape {
  stroke-width: 3.5; stroke-linejoin: round; stroke-dasharray: 1; stroke-dashoffset: 1; fill-opacity: 0;
  animation: hm-loop 4.6s ease-in-out infinite;
}
.hm-sn { stroke: var(--n); animation-delay: .15s; } .hm-sv { stroke: var(--v); animation-delay: .45s; } .hm-sm { stroke: var(--m); animation-delay: .75s; }
@keyframes hm-loop {
  0% { stroke-dashoffset: 1; fill-opacity: 0; opacity: 1; }
  24% { stroke-dashoffset: 0; fill-opacity: 0; }
  32% { stroke-dashoffset: 0; fill-opacity: 1; }
  78% { stroke-dashoffset: 0; fill-opacity: 1; opacity: 1; }
  90%, 100% { stroke-dashoffset: 0; fill-opacity: 1; opacity: 0; }
}
.hm-h { stroke-width: 1.2; opacity: .5; }
.hm-hn { stroke: var(--n); } .hm-hv { stroke: var(--v); } .hm-hm { stroke: var(--m); }
.tagline { margin: 6px 0 8px; font: 600 clamp(1.5rem, 1.1rem + 1.6vw, 2.2rem)/1.15 var(--font-head); letter-spacing: -.01em; }
.lede { max-width: 60ch; margin: 0; color: var(--ink-soft); font-size: 1.08rem; }

.modes { grid-area: modes; display: flex; flex-direction: column; gap: 12px; }
.mode {
  display: block; width: 100%; padding: 14px 18px;
  border: 1.5px solid var(--line); border-radius: var(--radius);
  background: var(--sheet); box-shadow: var(--shadow);
  text-align: left; cursor: pointer;
}
.mode:hover { border-color: var(--ink); }
.mode-name { display: block; font: 600 1.4rem/1.25 var(--font-head); }
.mode-desc { display: block; color: var(--ink-soft); }
.mode-main { padding: 18px 20px; border-color: var(--btn); background: var(--btn); color: var(--btn-ink); }
.mode-main .mode-name { font-size: 1.65rem; }
.mode-main .mode-desc { color: color-mix(in srgb, var(--btn-ink) 75%, transparent); }
.mode-quiet { border-style: dashed; background: transparent; box-shadow: none; }
.level-desc { margin: 0; padding: 8px 10px; border-left: 3px solid var(--line); color: var(--ink-soft); font-size: .93rem; line-height: 1.45; }
.level-desc strong { color: var(--ink); font-weight: 600; }
.learn-warn { margin: 0; padding: 8px 10px; border-left: 3px solid var(--bad); background: color-mix(in srgb, var(--bad) 7%, transparent); font-size: .93rem; }

.settings.settings-look { grid-area: look; }
.settings { grid-area: settings; display: flex; flex-direction: column; gap: 14px; }
.settings h2 { font-size: 1.4rem; }
.settings h3 { margin-top: 6px; padding-top: 10px; border-top: 1px solid var(--line); font-size: 1.1rem; }
.settings-note { margin: -8px 0 0; color: var(--ink-soft); font-size: .93rem; }
.seg-help { width: 100%; margin-top: 2px; color: var(--ink-soft); font-size: .85rem; }
.seg { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; }
.seg-label { width: 100%; margin-bottom: 2px; color: var(--ink-soft); font-size: .9rem; font-weight: 600; }
.seg button {
  padding: 6px 11px; border: 1.5px solid var(--line); border-radius: 999px;
  background: var(--sheet); cursor: pointer; font-size: .95rem; font-weight: 600;
}
.seg button:hover:not(:disabled) { border-color: var(--ink); }
.seg button:disabled { opacity: .35; cursor: not-allowed; }
.seg button[aria-checked="true"], .seg button[aria-pressed="true"] { border-color: var(--ink); background: var(--ink); color: var(--paper); }
.stats { margin: 6px 0 0; color: var(--ink-soft); }
.keys { margin: 0; color: var(--ink-soft); font-size: .9rem; line-height: 1.9; }

/* ============================================================ Ende */
.end-inner { max-width: 760px; margin: 0 auto; padding: 12vh 28px 48px; }
.end-kicker { margin: 0; color: var(--ink-soft); font: 600 1.1rem var(--font-ui); }
.end-title { margin: 4px 0 18px; font-size: clamp(3rem, 2rem + 6vw, 6rem); font-weight: 700; line-height: 1; }
.end-title .mark { padding: 0 .08em; background: linear-gradient(transparent 58%, color-mix(in srgb, var(--marker) 80%, transparent) 58% 92%, transparent 92%); }
.end-body { font-size: 1.1rem; }
.end-body p { margin: 0 0 6px; }
.end-body .end-sub { margin-top: 16px; }
.end-body ul { margin: 10px 0 0; padding-left: 1.1em; }
.end-actions { display: flex; gap: 12px; max-width: 420px; margin-top: 28px; }

/* ============================================================ Bestenliste */
.board-form { max-width: 520px; margin-top: 24px; }
.board-label { display: block; margin-bottom: 6px; font-weight: 600; }
.board-row { display: flex; gap: 10px; }
.board-input {
  flex: 1; min-width: 0; min-height: 46px; padding: 0 14px;
  border: 1.5px solid var(--line); border-radius: var(--radius); background: var(--sheet); color: var(--ink);
  font: 400 1.1rem var(--font-ui);
}
.board-input:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px color-mix(in srgb, var(--marker) 60%, transparent); }
.board-row .btn { flex: 0 0 auto; }
.board-msg { min-height: 1.4em; margin: 6px 0 0; color: var(--ink-soft); }
.board-msg.bad { color: var(--bad); }
.board-note { margin: 2px 0 0; color: var(--ink-soft); font-size: .88rem; }
.board-box { max-width: 520px; margin-top: 22px; }
.board-rank { margin: 0 0 10px; font-size: 1.15rem; }
.board-rank strong { font: 700 1.6rem var(--font-head); }
.board-list { margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-radius: 6px; background: var(--sheet); box-shadow: var(--shadow); }
.board-list li {
  display: grid; grid-template-columns: 3.2em minmax(0, 1fr) auto 6.5em; align-items: baseline; gap: 10px;
  padding: 9px 14px; border-top: 1px solid var(--line); font-variant-numeric: tabular-nums;
}
.board-list li:first-child { border-top: 0; }
.board-list .pos { color: var(--ink-soft); font-weight: 600; text-align: right; }
.board-list .nm { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 600; }
.board-list .lv { color: var(--ink-soft); font-size: .9rem; }
.board-list .pts { text-align: right; font-weight: 700; }
.board-list li.me { background: color-mix(in srgb, var(--marker) 30%, transparent); }
[data-theme="dark"] .board-list li.me { background: color-mix(in srgb, var(--marker) 14%, transparent); }
.board-gap { margin: 4px 0; color: var(--ink-soft); text-align: center; }
.board-err { padding: 10px 12px; border-left: 3px solid var(--bad); background: color-mix(in srgb, var(--bad) 7%, transparent); }
.board-inner { max-width: 760px; margin: 0 auto; padding: 24px 28px 48px; }
.board-inner .board-box { max-width: none; }

/* ============================================================ Spickzettel */
.cheat { max-width: 1400px; margin: 0 auto; padding: 24px 28px 48px; }
.cheat-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.cheat-head h1 { font-size: 2.2rem; font-weight: 700; }
.cheat-head .btn { flex: 0 0 auto; min-width: 140px; }
.cheat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.cheat-card { padding: 10px 10px 12px; }
.cheat-card h2 { margin: 2px 4px 4px; font-size: 1.05rem; }
.cheat-card svg { display: block; width: 100%; height: auto; }
.cheat-card .formula { margin: 6px 4px 0; color: var(--load); font-weight: 600; }
.cheat-rules { columns: 3 300px; column-gap: 32px; margin-top: 26px; }
.cheat-rules section { break-inside: avoid; margin-bottom: 18px; }
.cheat-rules h3 { margin-bottom: 4px; font-size: 1.15rem; }
.cheat-rules ul { margin: 0; padding-left: 1.1em; }
.cheat-rules li { line-height: 1.6; }

/* ============================================================ Boss-Taste */
.boss { position: fixed; inset: 0; z-index: 50; overflow: auto; background: #e9e9e9; color: #222; }
.boss-page {
  max-width: 760px; margin: 32px auto; padding: 56px 64px;
  background: #fff; box-shadow: 0 2px 12px rgba(0, 0, 0, .2);
  font-family: Georgia, "Times New Roman", serif; line-height: 1.6;
}
.boss-page h1, .boss-page h2 { font-family: Georgia, serif; font-weight: 700; }
.boss-page h1 { margin: 6px 0 18px; font-size: 1.5rem; }
.boss-page h2 { margin: 22px 0 6px; font-size: 1.1rem; }
.boss-meta, .boss-foot { color: #666; font-size: .85rem; }
.boss-foot { margin-top: 40px; text-align: center; }

/* ============================================================ Meldung */
.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 60;
  padding: 10px 18px; border-radius: var(--radius);
  background: var(--btn); color: var(--btn-ink); font: 700 1.05rem var(--font-ui);
  opacity: 0; transform: translate(-50%, 20px); pointer-events: none;
  transition: opacity .25s, transform .25s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ============================================================ Tablet und Handy */
@media (max-width: 980px) {
  .game { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 12px 16px 96px; }
  .side { position: static; max-height: none; }
  .explain { min-height: 0; }
  .actions {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 6;
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(6px);
  }
  .menu-inner { grid-template-columns: minmax(0, 1fr); grid-template-areas: "hero" "modes" "settings" "look"; grid-template-rows: none; gap: 22px; padding: 24px 16px 40px; }
  .cheat { padding: 16px; }
  .cheat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .hero-mark { margin: 0 auto; }
  body { font-size: 16px; }
  .bar { flex-wrap: wrap; gap: 10px; padding: 8px 12px 10px; }
  .wordmark { width: 90px; height: 34px; }
  .hud { order: 3; flex-basis: 100%; gap: 2px 14px; font-size: .95rem; }
  .bar-actions { margin-left: auto; }
  .text-btn { padding: 0 8px; }
  #cheatBtn { display: none; }
  .question { font-size: 1.25rem; }
  .system svg { height: auto; max-height: 38vh; }
  .system svg.sv-frame { height: auto; max-height: 52vh; }
  .answer svg.sv-frame { height: auto; }
  .answers { gap: 10px; }
  .answer { min-height: 0; padding: 6px 4px 4px; border-radius: var(--radius); }
  .answer svg { height: auto; margin-top: 18px; }
  .answer .num { top: 6px; left: 6px; width: 26px; height: 26px; font-size: .9rem; }
  .answer .val { height: 96px; min-height: 0; font-size: 1.45rem; }
  .answer .tag { top: 7px; right: 8px; font-size: .78rem; }
  .solution svg { max-height: none; }
  .boss-page { margin: 0; padding: 28px 22px; }
  .board-list li { grid-template-columns: 2.4em minmax(0, 1fr) 5.5em; }
  .board-list .lv { display: none; }
  .board-inner { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-delay: 0s !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .hm-shape { animation: none; stroke-dashoffset: 0; fill-opacity: 1; }
}

/* Tastenkürzel nur dort zeigen, wo es eine Tastatur gibt */
@media (hover: none) { .keys { display: none; } }