/* DESIGN OR DEATH — refined design-nerd theme.
   Near-monochrome, one accent (signal red), type-forward, tasteful motion.
   Mobile-first, no external fonts/assets. */
:root {
  --bg: #0c0c0d;
  --ink: #f2f2f0;
  --muted: #8a8a8f;
  --line: #26262a;
  --panel: #151517;
  --accent: #e5484d;     /* the "death" red — used sparingly */
  --good: #4cc38a;       /* win, thin flashes only */
  --maxw: 620px;
  --radius: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.screen {
  width: 100%;
  max-width: var(--maxw);
  min-height: 100dvh;
  padding: 24px 18px calc(24px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
}
.hidden { display: none !important; }

/* ---------- home / game over ---------- */
.home-inner {
  margin: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.wordmark {
  font-size: clamp(44px, 13vw, 84px);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.04em;
}
.wordmark.small { font-size: clamp(40px, 12vw, 68px); }
.wm-or { color: var(--muted); font-weight: 400; font-size: 0.42em; letter-spacing: 0; }
.wm-death {
  color: var(--bg);
  background: var(--accent);
  padding: 0 0.12em;
  border-radius: 4px;
}

.tagline { color: var(--muted); font-size: 15px; max-width: 30ch; line-height: 1.5; }

.btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 17px;
  font-weight: 600;
  padding: 13px 40px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .08s ease, border-color .15s ease, background .15s ease;
}
.btn:hover { border-color: var(--muted); }
.btn:active { transform: translateY(1px) scale(0.99); }
.btn-primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-primary:hover { background: #fff; }
.btn-ghost { background: transparent; }

.home-best, .over-best { color: var(--muted); font-size: 14px; letter-spacing: 0.02em; }
.home-best span, .over-best span { color: var(--ink); font-weight: 700; }
.over-score { font-size: 20px; color: var(--muted); }
.over-score strong { color: var(--ink); font-size: 30px; }
.home-how { color: var(--line); color: #55555c; font-size: 12.5px; max-width: 34ch; line-height: 1.5; margin-top: 6px; }

.mute {
  position: fixed; top: 14px; right: 16px;
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--line); background: var(--panel);
  color: var(--muted); font-size: 16px; cursor: pointer;
}
.mute.off { color: var(--line); }

/* ---------- play: HUD ---------- */
.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 34px;
  font-variant-numeric: tabular-nums;
}
.hearts { color: var(--accent); letter-spacing: 3px; font-size: 18px; }
.hud-right { display: flex; align-items: baseline; gap: 12px; }
.combo { color: var(--good); font-weight: 700; font-size: 15px; min-width: 2ch; text-align: right; }
.score { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; }

/* ---------- play: arena / stage ---------- */
.arena {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.stage {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}
.stage.shake { animation: shake .38s cubic-bezier(.36,.07,.19,.97); }
@keyframes shake {
  10%, 90% { transform: translateX(-2px); }
  20%, 80% { transform: translateX(4px); }
  30%, 50%, 70% { transform: translateX(-7px); }
  40%, 60% { transform: translateX(7px); }
}

/* win/lose tint wash over the arena */
.flash {
  position: absolute; inset: 0; z-index: 0;
  opacity: 0; pointer-events: none;
  border-radius: var(--radius);
}
.flash.win { background: radial-gradient(circle at center, rgba(76,195,138,0.16), transparent 70%); animation: fade .42s ease; }
.flash.lose { background: radial-gradient(circle at center, rgba(229,72,77,0.18), transparent 70%); animation: fade .42s ease; }
@keyframes fade { 0% { opacity: 1; } 100% { opacity: 0; } }

/* command word flash ("KERN!") */
.command {
  position: absolute; inset: 0; z-index: 2;
  display: flex; align-items: center; justify-content: center;
  font-size: clamp(40px, 12vw, 72px);
  font-weight: 800; letter-spacing: -0.03em;
  color: var(--ink);
  opacity: 0; pointer-events: none;
}
.command.show { animation: command .7s ease forwards; }
@keyframes command {
  0%   { opacity: 0; transform: scale(1.25); letter-spacing: 0.1em; }
  22%  { opacity: 1; transform: scale(1);    letter-spacing: -0.03em; }
  78%  { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.96); }
}

/* ---------- KERN! microgame ---------- */
.kern-wrap { text-align: center; user-select: none; }
.kern-word {
  font-size: clamp(52px, 17vw, 104px);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1;
  white-space: nowrap;
  display: inline-flex;
}
.kern-letter { display: inline-block; }
.kern-target {
  cursor: grab;
  color: var(--ink);
  position: relative;
}
.kern-target::after {
  content: "";
  position: absolute; left: 8%; right: 8%; bottom: -0.14em; height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.kern-target:active { cursor: grabbing; }
.kern-good::after { background: var(--good); transition: background .2s; }
.kern-fix { transition: transform .2s ease; }
.kern-fix::after { background: var(--good); }

/* ---------- shared microgame hint ---------- */
.mg-hint { margin-top: 2.2em; color: var(--muted); font-size: 13px; letter-spacing: 0.01em; text-align: center; }
.mg-hint-top { margin-top: 0; margin-bottom: 1.6em; }

/* ---------- ALIGN! (no guide — the group is the reference) ---------- */
.align-wrap { width: min(80vw, 320px); user-select: none; }
.align-wrap.align-vert { width: auto; }
.align-stack { display: flex; flex-direction: column; gap: 12px; }
.align-vert .align-stack {
  flex-direction: row; gap: 12px; height: 150px; justify-content: center;
}
.align-bar {
  height: 20px; border-radius: 5px;
  background: var(--panel); border: 1px solid var(--line);
}
.align-vert .align-bar { width: 20px; height: auto; }
.align-stray {
  background: var(--accent); border-color: var(--accent);
  cursor: grab; touch-action: none;
}
.align-stray:active { cursor: grabbing; }
.align-good { transition: transform .2s ease; background: var(--good); border-color: var(--good); }
.align-fix { transition: transform .2s ease; }

/* ---------- CENTER! (no frame — center in the play field itself) ---------- */
.center-obj {
  position: absolute; left: 50%; top: 50%; z-index: 3;
  background: var(--accent); cursor: grab; touch-action: none;
}
.center-obj:active { cursor: grabbing; }
.center-circle { border-radius: 50%; }
.center-square { border-radius: 3px; }
.center-triangle { background: transparent !important;
  border-left: 17px solid transparent; border-right: 17px solid transparent;
  border-bottom: 30px solid var(--accent); width: 0 !important; height: 0 !important; }
.center-text { display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-weight: 800; letter-spacing: -0.03em; background: transparent !important; }
.center-good { transition: transform .18s ease; background: var(--good); }
.center-good.center-triangle { border-bottom-color: var(--good); }
.center-good.center-text { color: var(--good); }
.center-fix { transition: transform .18s ease; }
.center-hint { position: absolute; left: 0; right: 0; bottom: 8px; }
.center-cross { position: absolute; inset: 0; z-index: 2; opacity: 0; transition: opacity .2s; pointer-events: none; }
.center-cross.show { opacity: 1; }
.center-cross-v { position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--line); }
.center-cross-h { position: absolute; top: 50%; left: 0; right: 0; height: 1px; background: var(--line); }

/* ---------- PICK! ---------- */
.pick-wrap { text-align: center; }
.pick-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.pick-chip {
  width: 84px; height: 84px; border-radius: var(--radius); border: 1px solid var(--line);
  color: #fff; font-size: 26px; font-weight: 700; cursor: pointer; font-family: inherit;
  transition: transform .08s ease;
}
.pick-chip:active { transform: scale(0.97); }
.pick-answer { outline: 3px solid var(--good); outline-offset: 2px; }
.pick-wrong { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- ODD ONE! ---------- */
.odd-wrap { text-align: center; }
.odd-grid { display: grid; gap: 10px; margin: 0 auto; width: 78vw; }
.odd-tile {
  aspect-ratio: 1 / 1; border-radius: 10px; border: none; cursor: pointer; padding: 0;
  transition: transform .08s ease;
}
.odd-tile:active { transform: scale(0.96); }
.odd-answer { outline: 3px solid var(--good); outline-offset: 2px; }
.odd-wrong { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- COLOR! / COMPLEMENT! / TRIAD! ---------- */
.color-wrap { text-align: center; user-select: none; }
.color-target {
  width: 92px; height: 46px; margin: 0 auto 20px; border-radius: 8px;
  border: 1px solid var(--line);
}
.color-wheel {
  position: relative; width: 240px; height: 240px; margin: 0 auto;
  border-radius: 50%; touch-action: none; cursor: crosshair;
  box-shadow: 0 0 0 1px var(--line);
}
.color-sat {
  position: absolute; inset: 0; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle at 50% 50%, #fff 0%, rgba(255,255,255,0) 72%);
}
.color-picker {
  position: absolute; left: 50%; top: 50%; width: 26px; height: 26px;
  border-radius: 50%; border: 3px solid #fff; box-shadow: 0 0 0 1.5px rgba(0,0,0,.5);
  pointer-events: none; z-index: 2;
}
.color-picker.color-good { border-color: var(--good); }
.color-picker.color-bad { border-color: var(--accent); }
.color-marker {
  position: absolute; left: 50%; top: 50%; width: 16px; height: 16px;
  border-radius: 50%; border: 2px dashed var(--ink); opacity: 0;
  pointer-events: none; z-index: 1;
}
.color-marker.show { opacity: 0.9; }

/* ---------- countdown ---------- */
.countdown {
  height: 5px;
  background: var(--line);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 12px;
}
.bar {
  height: 100%;
  width: 100%;
  transform-origin: left center;
  background: var(--ink);
  transition: background .2s ease;
}
.bar.low { background: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  .stage.shake, .command.show, .flash.win, .flash.lose { animation: none; }
}