@font-face {
  font-family: "Press Start 2P";
  src: url("/fonts/press-start-2p-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-800-normal.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

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

body {
  --bg: #0f1115;
  --fg: #e8e8e8;
  --accent: #22d3ee;
  --accent2: #f87171;
  --panel: rgba(255,255,255,0.045);
  --border: rgba(255,255,255,0.09);
  --pixel: "Press Start 2P", monospace;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--fg);
  background:
    radial-gradient(120% 55% at 50% -12%, color-mix(in srgb, var(--accent) 13%, transparent), transparent 60%),
    radial-gradient(90% 40% at 85% 110%, color-mix(in srgb, var(--accent2) 9%, transparent), transparent 65%),
    var(--bg);
  overflow: hidden;
  -webkit-user-select: none; user-select: none;
  -webkit-tap-highlight-color: transparent;
}
body.theme-pastels {
  --bg: #f6f2ec; --fg: #3a3428;
  --accent: #e8875a; --accent2: #d9739a;
  --panel: rgba(0,0,0,0.035); --border: rgba(0,0,0,0.09);
}
body.theme-catppuccin {
  --bg: #1e1e2e; --accent: #cba6f7; --accent2: #89dceb;
}
body.theme-crt {
  --bg: #020604; --accent: #33ff66; --accent2: #33ff66;
}

#app { position: relative; z-index: 1; height: 100dvh; display: flex; flex-direction: column; }

/* Ambient tetrominoes, shared with the landing and about pages. */
.tetris-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  filter: blur(5px);
  opacity: 0.13;
}
.bg-piece {
  position: absolute;
  top: -20vh;
  left: var(--x);
  display: grid;
  gap: 3px;
  grid-auto-columns: var(--cell);
  grid-auto-rows: var(--cell);
  animation: bgFall var(--dur) linear var(--delay) infinite;
}
.bg-piece i {
  background: var(--col);
  border-radius: 4px;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.3), inset 0 -3px 0 rgba(0, 0, 0, 0.3);
}
@keyframes bgFall {
  from { transform: translateY(0) rotate(0deg); }
  to { transform: translateY(145vh) rotate(var(--rot)); }
}

/* ---------- header ---------- */
header {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.65rem 1rem;
  background: linear-gradient(90deg,
    color-mix(in srgb, var(--accent) 12%, transparent),
    color-mix(in srgb, var(--accent2) 7%, transparent) 55%,
    transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 14%, transparent);
}
h1 {
  font-size: 1.05rem; letter-spacing: 0.22em; font-weight: 800;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* segmented mode control */
.modes {
  display: flex; gap: 2px; padding: 3px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 999px;
}
.modes button {
  border: none; background: transparent; color: inherit; font: inherit;
  font-size: 0.78rem; letter-spacing: 0.05em;
  padding: 0.45rem 1.1rem; border-radius: 999px;
  opacity: 0.6; cursor: pointer; transition: all 0.2s;
}
.modes button.active {
  opacity: 1; font-weight: 700;
  background: var(--accent);
  color: #0b0d12;
}
.theme-pastels .modes button.active { color: #2c2618; }

/* theme swatches */
.themes { margin-left: auto; display: flex; gap: 0.5rem; align-items: center; }
.swatch {
  width: 1.35rem; height: 1.35rem; border-radius: 50%;
  border: 2px solid transparent; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}
.swatch:hover { transform: scale(1.15); }
.swatch.active {
  border-color: var(--fg);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent);
}
.swatch.colorful { background: linear-gradient(135deg, #22d3ee, #f87171); }
.swatch.pastels { background: linear-gradient(135deg, #fbe7a1, #f6c6c6); }
.swatch.catppuccin { background: linear-gradient(135deg, #cba6f7, #89dceb); }
.swatch.crt { background: #33ff66; }

/* ---------- main / HUD ---------- */
main { flex: 1; display: flex; min-height: 0; }

#game-wrap {
  position: relative; flex: 1; min-width: 0;
  touch-action: none;
}
#game-wrap canvas { display: block; }

#hud {
  position: absolute; top: 0; left: 0; right: 0; z-index: 4;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: start;
  padding: calc(1rem + env(safe-area-inset-top, 0px)) 0.85rem 2.4rem; pointer-events: none;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--accent) 16%, color-mix(in srgb, var(--bg) 92%, transparent)) 0%,
    color-mix(in srgb, var(--accent2) 6%, color-mix(in srgb, var(--bg) 55%, transparent)) 45%,
    transparent 100%);
}
.hud-left b {
  display: block; font-family: var(--pixel); font-size: 1.3rem; line-height: 1.3;
  color: var(--accent);
  text-shadow: 0 0 14px color-mix(in srgb, var(--accent) 55%, transparent);
}
.hud-meta { display: flex; align-items: center; gap: 0.48rem; }
.hud-left span {
  font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.14em; opacity: 0.6;
}
.hud-left .bot-label {
  padding: 0.15rem 0.32rem;
  border: 1px solid color-mix(in srgb, var(--accent) 72%, transparent);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.5rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  opacity: 1;
}
.hud-left em { font-style: normal; }
.hud-next { display: flex; flex-direction: column; align-items: center; gap: 0.3rem; justify-self: end; }
.hud-next span {
  font-family: var(--pixel); font-size: 0.5rem; letter-spacing: 0.16em; opacity: 0.75;
}
#next-canvas { width: 52px; height: 52px; opacity: 0.95; }

#hud-pops { position: absolute; inset: 0; z-index: 6; pointer-events: none; }

/* text over a bottom gradient, mirroring the HUD's top gradient */
#settings-swipe-hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 4;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 0.6rem;
  color: var(--fg);
  font-family: var(--pixel);
  font-size: clamp(9px, 2.4vw, 11px);
  padding: 3.6rem 1rem max(1.3rem, env(safe-area-inset-bottom));
  background: linear-gradient(0deg,
    color-mix(in srgb, var(--accent) 16%, color-mix(in srgb, var(--bg) 92%, transparent)) 0%,
    color-mix(in srgb, var(--accent2) 6%, color-mix(in srgb, var(--bg) 55%, transparent)) 45%,
    transparent 100%);
  letter-spacing: 0.12em;
  white-space: nowrap;
  pointer-events: none;
}
#settings-swipe-hint svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: hint-swipe 1.3s ease-in-out infinite;
}
@keyframes hint-swipe {
  0%, 100% { transform: translateY(3px); opacity: 0.45; }
  50% { transform: translateY(-3px); opacity: 1; }
}
[x-cloak] { display: none !important; }

/* day best (today's top leaderboard score) */
.hud-day { display: flex; flex-direction: column; align-items: center; gap: 0.3rem; }
.hud-day span {
  font-family: var(--pixel); font-size: 0.5rem; letter-spacing: 0.16em; opacity: 0.75;
}
.hud-day b {
  font-family: var(--pixel); font-size: 0.8rem;
  color: var(--c-O, var(--accent));
  text-shadow: 0 0 12px color-mix(in srgb, var(--c-O, var(--accent)) 55%, transparent);
}
.theme-pastels .hud-day b { color: var(--accent); text-shadow: none; }
.hud-day b.you {
  color: var(--c-S, var(--accent));
  text-shadow: 0 0 12px color-mix(in srgb, var(--c-S, var(--accent)) 60%, transparent);
  animation: bestBlink 1.1s steps(2) infinite;
}

/* desktop cursor affordance */
@media (pointer: fine) {
  #game-wrap { cursor: none; }
}
#cursor-dot {
  position: absolute; width: 38px; height: 38px; border-radius: 50%;
  background: radial-gradient(circle at 38% 34%, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.08) 70%);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  pointer-events: none; z-index: 30; opacity: 0;
  transition: opacity 0.15s ease, transform 0.1s ease;
}
#cursor-dot.show { opacity: 0.9; }
#cursor-dot.down { transform: translate(-50%, -50%) scale(0.72); }
.cursor-trail {
  position: absolute; width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 50%, transparent), transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none; z-index: 29;
  animation: trailFade 0.38s ease-out forwards;
}
@keyframes trailFade {
  to { transform: translate(-50%, -50%) scale(0.15); opacity: 0; }
}

.hud-pop {
  --pop-duration: 900ms;
  position: absolute; left: 50%; top: 40%; white-space: nowrap;
  font-family: var(--pixel); font-size: 0.9rem; letter-spacing: 0.05em;
  color: var(--fg); text-shadow: 0 2px 14px rgba(0,0,0,0.55);
  animation: pop var(--pop-duration) cubic-bezier(0.2, 0.9, 0.25, 1) forwards;
}
.hud-pop.big {
  font-size: 1.25rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 2px 12px color-mix(in srgb, var(--accent) 55%, transparent));
}
.hud-pop.clear-callout {
  top: 48%;
  text-indent: 0.05em;
  animation-name: clearCallout;
  animation-timing-function: cubic-bezier(0.18, 0.88, 0.2, 1);
}
.hud-pop.clear-3 { font-size: clamp(1.35rem, 6vw, 2rem); }
.hud-pop.clear-4 {
  font-size: clamp(1.55rem, 7.5vw, 2.5rem);
  letter-spacing: 0.09em;
  text-indent: 0.09em;
  filter: drop-shadow(0 0 18px color-mix(in srgb, var(--accent) 80%, transparent));
}
.hud-pop.clear-4::before,
.hud-pop.clear-4::after {
  content: attr(data-text); position: absolute; inset: 0;
  -webkit-text-fill-color: initial; opacity: 0;
  animation: tetrisEcho var(--pop-duration) steps(2, end) forwards;
}
.hud-pop.clear-4::before { color: var(--c-Z, #f87171); transform: translateX(-4px); }
.hud-pop.clear-4::after { color: var(--c-I, #22d3ee); transform: translateX(4px); }
.game-paused .hud-pop, .game-paused .hud-pop::before, .game-paused .hud-pop::after { animation-play-state: paused; }
@keyframes pop {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(0.5); }
  18%  { opacity: 1; transform: translate(-50%, -62%) scale(1.12); }
  100% { opacity: 0; transform: translate(-50%, -160%) scale(1); }
}
@keyframes clearCallout {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.42); }
  12% { opacity: 1; transform: translate(-50%, -58%) scale(1.2); }
  23%, 78% { opacity: 1; transform: translate(-50%, -58%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -72%) scale(1.12); }
}
@keyframes tetrisEcho {
  0%, 11%, 22%, 100% { opacity: 0; }
  12%, 18% { opacity: 0.48; }
}

#clear-flash {
  position: absolute; inset: 0; z-index: 3; pointer-events: none;
  background: white; opacity: 0;
}
#clear-flash.on { animation: flash 220ms ease-out; }
#clear-flash.on.triple {
  background: linear-gradient(180deg, white, var(--accent), transparent 78%);
  animation-duration: 420ms;
}
#clear-flash.on.tetris {
  background:
    radial-gradient(circle at 50% 70%, white, color-mix(in srgb, var(--accent) 78%, transparent) 25%, transparent 68%),
    white;
  animation: tetrisFlash 850ms ease-out;
}
#game-wrap.tetris-impact > canvas { animation: chromaticImpact 900ms steps(2, end); }
@keyframes flash { 0% { opacity: 0.55; } 100% { opacity: 0; } }
@keyframes tetrisFlash {
  0% { opacity: 0.9; }
  10% { opacity: 0.15; }
  18% { opacity: 0.55; }
  100% { opacity: 0; }
}
@keyframes chromaticImpact {
  0%, 18% { filter: saturate(2) drop-shadow(-7px 0 rgba(248, 113, 113, 0.65)) drop-shadow(7px 0 rgba(34, 211, 238, 0.65)); }
  19%, 100% { filter: none; }
}
@media (prefers-reduced-motion: reduce) {
  .hud-pop.clear-callout { animation-name: reducedCallout; }
  .hud-pop.clear-4::before, .hud-pop.clear-4::after, #game-wrap.tetris-impact > canvas { animation: none; }
  @keyframes reducedCallout {
    0%, 100% { opacity: 0; transform: translate(-50%, -55%); }
    15%, 80% { opacity: 1; transform: translate(-50%, -55%); }
  }
}

/* CRT */
#crt-overlay { display: none; position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.theme-crt #crt-overlay {
  display: block;
  background:
    repeating-linear-gradient(0deg, rgba(0,0,0,0.28) 0 1px, transparent 1px 3px),
    radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.55) 100%);
  border-radius: 2% / 3%;
  animation: crt-flicker 4s ease-in-out infinite;
}
/* sweeping bright band */
.theme-crt #crt-overlay::after {
  content: ""; position: absolute; left: 0; right: 0; height: 22%;
  background: linear-gradient(180deg,
    transparent,
    rgba(120, 255, 170, 0.05) 40%,
    rgba(120, 255, 170, 0.11) 55%,
    transparent);
  animation: crt-sweep 6s linear infinite;
}
/* faint rolling interference line */
.theme-crt #crt-overlay::before {
  content: ""; position: absolute; left: 0; right: 0; height: 2px;
  background: rgba(150, 255, 190, 0.14);
  animation: crt-roll 2.8s linear infinite;
}
@keyframes crt-sweep { 0% { top: -25%; } 100% { top: 110%; } }
@keyframes crt-roll { 0% { top: -2%; } 100% { top: 102%; } }
@keyframes crt-flicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.94; }
  52% { opacity: 0.99; }
  78% { opacity: 0.96; }
}
.theme-crt #game-wrap canvas {
  filter:
    brightness(1.15) contrast(1.05) blur(0.4px) saturate(1.3)
    drop-shadow(1px 0 rgba(255, 0, 60, 0.22))
    drop-shadow(-1px 0 rgba(0, 255, 120, 0.22));
}

/* ---------- overlays ---------- */
.overlay {
  position: absolute; inset: 0; z-index: 5;
  display: flex; flex-direction: column; align-items: center;
  justify-content: safe center;
  overflow-y: auto;
  gap: 1.3rem; text-align: center;
  /* plain rgba keeps the HUD dimmed on browsers without color-mix() */
  background: rgba(15, 17, 21, 0.84);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  color: var(--fg); padding: 1rem;
}
/* landing-page branding: S-piece glyph above the multicolor logo */
.brand-block {
  --block: clamp(17px, 4vw, 24px);
  display: grid;
  grid-template-columns: repeat(3, var(--block));
  grid-template-rows: repeat(2, var(--block));
  gap: 2px;
  margin-bottom: -0.6rem;
}
.brand-block i {
  display: block; border-radius: 4px;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--c-S, #4ade80) 55%, white),
    var(--c-S, #4ade80) 46%,
    color-mix(in srgb, var(--c-S, #4ade80) 65%, black));
  box-shadow: inset 2px 2px 0 rgba(255, 255, 255, 0.38), inset -3px -3px 0 rgba(0, 0, 0, 0.25);
}
.brand-block i:nth-child(1) { grid-column: 2; }
.brand-block i:nth-child(2) { grid-column: 3; }
.brand-block i:nth-child(3) { grid-column: 1; grid-row: 2; }
.brand-block i:nth-child(4) { grid-column: 2; grid-row: 2; }
.menu-title {
  font-family: var(--pixel);
  text-transform: uppercase;
  font-size: clamp(22px, 6.4vw, 42px); letter-spacing: 0.04em; /* same scale as the landing logo */
}
.menu-title span { display: inline-block; }
.menu-title span:nth-child(1) { color: var(--c-I); text-shadow: 0 0 16px color-mix(in srgb, var(--c-I) 55%, transparent); }
.menu-title span:nth-child(2) { color: var(--c-O); text-shadow: 0 0 16px color-mix(in srgb, var(--c-O) 50%, transparent); }
.menu-title span:nth-child(3) { color: var(--c-T); text-shadow: 0 0 16px color-mix(in srgb, var(--c-T) 55%, transparent); }
.menu-title span:nth-child(4) { color: var(--c-S); text-shadow: 0 0 16px color-mix(in srgb, var(--c-S) 50%, transparent); }
.menu-title span:nth-child(5) { color: var(--c-Z); text-shadow: 0 0 16px color-mix(in srgb, var(--c-Z) 50%, transparent); }
.menu-title span:nth-child(6) { color: var(--c-J); text-shadow: 0 0 16px color-mix(in srgb, var(--c-J) 55%, transparent); }
.menu-title span:nth-child(7) { color: var(--c-L); text-shadow: 0 0 16px color-mix(in srgb, var(--c-L) 50%, transparent); }
.menu-title span:nth-child(8) { color: var(--c-I); text-shadow: 0 0 16px color-mix(in srgb, var(--c-I) 55%, transparent); }
.menu-title span:nth-child(9) { color: var(--c-O); text-shadow: 0 0 16px color-mix(in srgb, var(--c-O) 50%, transparent); }
/* Four screen zones: identity, scores, how-to, then thumb-reach actions.
   Scores own the space between the logo and the daily prompt instead of
   being tied to either one. */
.overlay.menu {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: clamp(10rem, 22dvh, 12rem) clamp(4.5rem, 8dvh, 5.5rem) minmax(0, 1.2fr) minmax(0, 1fr);
  grid-template-areas:
    "identity"
    "scores"
    "guide"
    "actions";
  justify-items: center;
  align-items: center;
  align-content: stretch;
  width: 100%;
  min-height: 0;
  padding-block: calc(1.5rem + env(safe-area-inset-top)) calc(2rem + env(safe-area-inset-bottom));
  isolation: isolate;
}
/* This instance sits above the menu wash but behind its controls. */
.overlay.menu .tetris-bg {
  position: absolute;
  z-index: 0;
  filter: blur(6px);
  opacity: 0.13;
}
.overlay.menu > :not(.tetris-bg) { position: relative; z-index: 1; }
.menu-intro, .menu-guide, .menu-thumb-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.menu-intro {
  grid-area: identity;
  gap: 1rem;
}
.menu-scores {
  grid-area: scores;
  align-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.15rem;
  min-height: 2.75rem; /* the daily-score slot does not make the layout jump */
}
.menu-guide {
  grid-area: guide;
  gap: 1.25rem;
}
.menu-thumb-zone {
  grid-area: actions;
  align-self: start;
  gap: 1rem;
  padding-top: 0.75rem;
}
.menu-thumb-zone .big { margin: 0; }
.menu-thumb-zone .continue-run { background: linear-gradient(180deg, color-mix(in srgb, var(--c-I, var(--accent)) 72%, white), var(--c-I, var(--accent)) 45%, color-mix(in srgb, var(--c-I, var(--accent)) 78%, black)); }
.menu-thumb-zone .menu-links { margin-top: 0.65rem; }
.resume-meta {
  font-family: var(--pixel); font-size: clamp(9px, 2.4vw, 11px); line-height: 1.7; letter-spacing: 0.1em;
  color: var(--accent); text-indent: 0.1em;
}
.start-over {
  border: 0; background: none; color: var(--fg); opacity: 0.55; cursor: pointer;
  font: 700 0.78rem "JetBrains Mono", monospace; text-decoration: underline; text-underline-offset: 0.25em;
}
.start-over:hover { opacity: 1; }
/* Compact zones retain the same hierarchy on short phones. */
@media (max-height: 740px) {
  .overlay.menu {
    grid-template-rows: 10rem 4.5rem minmax(0, 1.2fr) minmax(0, 1fr);
    padding-block: 1rem calc(1.5rem + env(safe-area-inset-bottom));
  }
  .menu-intro { gap: 0.65rem; }
  .menu-guide { gap: 0.8rem; }
  .menu-thumb-zone { gap: 0.7rem; padding-top: 0.5rem; }
  .menu-thumb-zone .menu-links { margin-top: 0.4rem; }
  .menu-scores { gap: 0.65rem; min-height: 2.15rem; }
  .glyph { width: 46px; height: 46px; }
  .gesture { gap: 7px; }
}
@media (max-height: 600px) {
  .overlay.menu {
    grid-template-rows: 8.25rem 3.75rem minmax(0, 1.2fr) minmax(0, 1fr);
    padding-block: 0.75rem calc(1rem + env(safe-area-inset-bottom));
  }
}
.tagline { font-family: var(--pixel); text-transform: uppercase; opacity: 0.55; letter-spacing: 0.14em; font-size: clamp(9px, 2.4vw, 12px); margin-top: -0.6rem; }
.hint { font-size: 0.68rem; opacity: 0.5; }
.about-link {
  display: inline-block;
  font-family: inherit; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em;
  color: var(--fg); opacity: 0.85; text-decoration: none;
  border: 2px solid color-mix(in srgb, var(--fg) 28%, transparent);
  border-radius: 10px;
  padding: 0.85rem 1.3rem;
  transition: border-color 0.15s, opacity 0.15s;
}
.about-link:hover { opacity: 1; border-color: var(--accent); }
.menu-links { display: flex; gap: 0.6rem; justify-content: center; align-items: stretch; }
.menu-links .about-link {
  font-size: 0.7rem;
  padding: 0.65rem 0.85rem;
  white-space: nowrap;
}
.menu-meta.version { font-size: clamp(8px, 2vw, 10px); opacity: 0.45; margin-top: 0.8rem; }
button.about-link.bot-demo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 72%, transparent);
  background: transparent;
  cursor: pointer;
}
button.about-link.bot-demo svg { width: 0.95em; height: 0.95em; fill: currentColor; }
button.about-link.bot-demo:hover:not(:disabled) {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
button.about-link.bot-demo:disabled { cursor: wait; opacity: 0.6; }

/* animated gesture legend (ported from the landing) */
.gestures { display: flex; gap: clamp(18px, 5vw, 40px); justify-content: center; }
.gesture { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.g-label { font-size: 11px; color: var(--fg); opacity: 0.65; line-height: 1.6; letter-spacing: 0.06em; }
.g-label em { font-style: normal; font-weight: 700; opacity: 1; }
.glyph {
  position: relative; width: 52px; height: 52px;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--panel); overflow: hidden;
}
.glyph i {
  position: absolute; width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
  left: 50%; top: 50%; margin: -5px 0 0 -5px;
}
.glyph-drag i { animation: gDrag 1.8s ease-in-out infinite; }
@keyframes gDrag {
  0%, 100% { transform: translateX(-13px); }
  50% { transform: translateX(13px); }
}
.glyph-tap i { animation: gTap 1.6s ease infinite; }
.glyph-tap i::after {
  content: ""; position: absolute; inset: -6px;
  border: 2px solid var(--accent); border-radius: 50%;
  opacity: 0; animation: gRing 1.6s ease infinite;
}
@keyframes gTap { 0%, 100% { transform: scale(1); } 12% { transform: scale(0.6); } 30% { transform: scale(1); } }
@keyframes gRing { 0% { transform: scale(0.4); opacity: 0.9; } 45% { transform: scale(1.8); opacity: 0; } 100% { opacity: 0; } }
.glyph-flick i { animation: gFlick 1.5s cubic-bezier(0.6, 0, 0.9, 0.4) infinite; }
@keyframes gFlick {
  0% { transform: translateY(-16px); opacity: 0; }
  18% { opacity: 1; }
  48% { transform: translateY(18px); opacity: 1; }
  60%, 100% { transform: translateY(20px); opacity: 0; }
}
.menu-meta {
  font-family: var(--pixel); font-size: clamp(10px, 2.6vw, 12px); letter-spacing: 0.1em;
  color: var(--accent);
}
.menu-meta.dim { color: var(--fg); opacity: 0.45; }
.menu-meta.today {
  color: var(--c-L, #fb923c);
  text-shadow: 0 0 12px color-mix(in srgb, var(--c-L, #fb923c) 55%, transparent);
  opacity: 0; /* slot stays reserved while the leaderboard fetch is in flight */
  transition: opacity 0.45s ease-in;
}
.menu-meta.today.loaded { opacity: 1; }
.new-best {
  font-family: var(--pixel); font-size: 0.75rem; letter-spacing: 0.12em;
  color: var(--c-O, var(--accent));
  text-shadow: 0 0 14px color-mix(in srgb, var(--c-O, var(--accent)) 60%, transparent);
  animation: bestBlink 1.1s steps(2) infinite;
}
@keyframes bestBlink { 50% { opacity: 0.35; } }

/* landing-style scanlines (CRT theme ships its own richer overlay) */
.scanlines {
  position: fixed; inset: 0; pointer-events: none; z-index: 60;
  background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.1) 0 1px, transparent 1px 3px);
  mix-blend-mode: multiply;
}
.theme-crt .scanlines { display: none; }
.theme-pastels .scanlines { display: none; } /* dark stripes turn the light theme gray */
.final { font-size: 1rem; }
.final b { font-size: 1.5rem; font-variant-numeric: tabular-nums; }

/* identical to the landing CTA: a shallow tetromino block */
button.big {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--pixel); font-size: clamp(12px, 3vw, 15px);
  padding: 18px 30px; border: none; border-radius: 10px; cursor: pointer;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--c-S, var(--accent)) 72%, white),
    var(--c-S, var(--accent)) 45%,
    color-mix(in srgb, var(--c-S, var(--accent)) 78%, black));
  color: #0c0d10;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.4), inset 0 -4px 0 rgba(0, 0, 0, 0.28),
    0 4px 12px rgba(0, 0, 0, 0.35);
  transition: transform 0.12s ease, filter 0.12s ease, box-shadow 0.12s ease;
}
button.big svg { width: 1.05em; height: 1.05em; fill: currentColor; flex: 0 0 auto; }
.theme-pastels button.big { color: #2c2618; }
button.big:hover { transform: translateY(-1px); filter: brightness(1.06); }
button.big:active {
  transform: translateY(2px);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.4), inset 0 -2px 0 rgba(0, 0, 0, 0.28),
    0 1px 4px rgba(0, 0, 0, 0.35);
}
button.big:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }

button.ghost {
  background: none; color: var(--fg); opacity: 0.85;
  border: 2px solid color-mix(in srgb, var(--fg) 28%, transparent);
  border-radius: 10px;
  font-family: var(--pixel); font-size: 0.68rem; letter-spacing: 0.08em;
  padding: 0.95rem 1.4rem; cursor: pointer;
  transition: border-color 0.15s, opacity 0.15s;
}
button.ghost:hover { opacity: 1; border-color: var(--accent); }
button.ghost.bot-replay {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 72%, transparent);
}
button.ghost.bot-replay svg { width: 0.95em; height: 0.95em; fill: currentColor; }
.overlay form { display: flex; gap: 0.5rem; }
.overlay input {
  font: inherit; font-size: 1rem; padding: 0.6rem 0.85rem; border-radius: 0.7rem;
  border: 1px solid var(--border); background: var(--panel); color: inherit; width: 11rem;
  outline: none;
}
.overlay input.initials {
  font-family: var(--pixel); font-size: 0.82rem; width: 9.5rem;
  text-align: center; text-transform: uppercase; letter-spacing: 0.18em;
  caret-color: var(--accent);
}
.overlay input.initials::placeholder { opacity: 0.3; }
.overlay input:focus { border-color: var(--accent); }
.overlay form button {
  font: inherit; font-weight: 700; font-size: 1rem; padding: 0.6rem 1.1rem; border-radius: 0.7rem;
  border: 1px solid var(--border); background: var(--panel); color: inherit; cursor: pointer;
  transition: border-color 0.15s;
}
.overlay form button:hover:not(:disabled) { border-color: var(--accent); }
.overlay form button:disabled { opacity: 0.55; cursor: default; }
/* saved pause */
.overlay.paused-screen {
  z-index: 7;
  gap: 1.5rem;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(18px) saturate(0.8); -webkit-backdrop-filter: blur(18px) saturate(0.8);
}
.pause-glyph { display: flex; gap: 0.55rem; filter: drop-shadow(0 0 14px color-mix(in srgb, var(--accent) 65%, transparent)); }
.pause-glyph i { width: 0.7rem; height: 2.7rem; border-radius: 0.18rem; background: var(--accent); }
.paused-title {
  font-family: var(--pixel); font-size: clamp(1.2rem, 6vw, 1.8rem); line-height: 1.7;
  letter-spacing: 0.16em; text-indent: 0.16em; color: var(--accent);
  text-shadow: 0 0 20px color-mix(in srgb, var(--accent) 60%, transparent);
}
.paused-score { font-size: 0.85rem; letter-spacing: 0.08em; opacity: 0.75; }
.saved-note {
  font-family: var(--pixel); font-size: 0.58rem; line-height: 2; letter-spacing: 0.14em; text-indent: 0.14em;
  color: var(--c-S, var(--accent));
}
.saved-note span { color: var(--fg); opacity: 0.48; }

/* game over */
.over-label {
  font-family: var(--pixel);
  font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.3em; opacity: 0.55;
}
.over-score {
  font-family: var(--pixel);
  font-size: clamp(2rem, 10vw, 2.9rem); line-height: 1.15;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 4px 18px color-mix(in srgb, var(--accent) 45%, transparent));
}
.over-chips { display: flex; gap: 0.5rem; }
.chip {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 999px; padding: 0.4rem 0.85rem; font-size: 0.85rem;
}
.chip b { font-variant-numeric: tabular-nums; }
.rank-chip { font-weight: 700; color: var(--accent); letter-spacing: 0.06em; }
.submit-error { max-width: min(22rem, 88vw); color: var(--accent2); font-size: 0.8rem; line-height: 1.5; text-align: center; }
.over-actions { display: flex; flex-direction: column; align-items: center; gap: 0.9rem; margin-top: 0.6rem; width: min(20rem, 84vw); }
.over-actions button.big { width: 100%; }
.over-actions button.ghost { width: 100%; }
.rank-chip { font-size: 1rem; }

.board-list {
  list-style: none; font-family: var(--pixel); font-size: 0.72rem; width: min(24rem, 88vw);
  max-height: 17rem; overflow: auto;
  background: var(--panel); border: 1px solid var(--border); border-radius: 0.9rem;
  padding: 0.5rem;
}
.board-list .nm { display: flex; align-items: center; gap: 0.45rem; text-transform: uppercase; }
.board-list .nm > span { letter-spacing: 0.22em; }
.cpu-badge {
  flex: none; padding: 0.18rem 0.25rem; border: 1px solid currentColor; border-radius: 0.2rem;
  color: var(--dim); font-family: "JetBrains Mono", monospace; font-size: 0.5rem; line-height: 1; letter-spacing: 0.08em;
}
.bot-score-badge { color: var(--accent); }
.board-list li {
  display: grid; grid-template-columns: 1.8rem 1fr auto;
  align-items: center; gap: 0.7rem;
  padding: 0.65rem 0.7rem; border-radius: 0.5rem;
}
.board-list li:nth-child(odd) { background: var(--panel); }
.board-list .nm { text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.board-list b { font-variant-numeric: tabular-nums; }
/* colored numbers, no medals, matching the landing hiscores */
.rank { font-size: 0.72rem; opacity: 0.5; text-align: center; }
.rank.r1, .rank.r2, .rank.r3 { opacity: 1; }
.rank.r1 { color: var(--c-O, #ffd75e); text-shadow: 0 0 8px color-mix(in srgb, var(--c-O, #ffd75e) 55%, transparent); }
.rank.r2 { color: var(--c-I, #22d3ee); }
.rank.r3 { color: var(--c-L, #fb923c); }

/* ---------- settings sheet ---------- */
#sheet-backdrop {
  position: absolute; inset: 0; z-index: 49;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
#pause-flag {
  position: absolute; left: 50%; top: 28%; transform: translateX(-50%);
  z-index: 49; pointer-events: none;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  font-family: var(--pixel); font-size: clamp(16px, 4.5vw, 22px); letter-spacing: 0.18em;
  color: var(--accent);
  text-shadow: 0 0 20px color-mix(in srgb, var(--accent) 60%, transparent);
}
#pause-flag span { text-indent: 0.18em; } /* offset trailing letter-spacing */
#pause-flag svg {
  width: 1.6em; height: 1.6em; fill: currentColor;
  filter: drop-shadow(0 0 12px color-mix(in srgb, var(--accent) 60%, transparent));
  animation: cursorBlink 1.4s steps(2) infinite;
}
@keyframes cursorBlink { 50% { opacity: 0.25; } }
#sheet {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 50;
  max-width: 560px; margin: 0 auto;
  padding: 0 0.75rem calc(0.75rem + env(safe-area-inset-bottom));
}
.sheet-enter { transition: all 0.3s cubic-bezier(0.2, 0.9, 0.25, 1); }
.sheet-leave { transition: all 0.2s ease-in; }
.sheet-hidden { opacity: 0; transform: translateY(32px); }
.sheet-shown { opacity: 1; transform: translateY(0); }

.sheet-card {
  background:
    linear-gradient(180deg,
      color-mix(in srgb, var(--accent) 12%, transparent),
      color-mix(in srgb, var(--accent2) 5%, transparent) 45%,
      transparent 75%),
    color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(22px) saturate(1.5); -webkit-backdrop-filter: blur(22px) saturate(1.5);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border)); border-radius: 1.5rem;
  padding: 0.7rem 1.3rem 1.5rem;
  box-shadow: 0 -12px 48px rgba(0,0,0,0.45), 0 0 40px color-mix(in srgb, var(--accent) 10%, transparent);
}
.grabber { width: 2.8rem; height: 5px; border-radius: 3px; background: color-mix(in srgb, var(--accent) 45%, var(--border)); margin: 0.25rem auto 1.2rem; }
.sheet-section { margin-bottom: 1.25rem; }
.sheet-section:last-child { margin-bottom: 0; }
.sheet-label {
  display: block; font-family: var(--pixel); font-size: 0.6rem; text-transform: uppercase;
  letter-spacing: 0.18em; color: var(--accent); opacity: 0.9; margin-bottom: 0.65rem;
}
.sheet-card .modes { width: fit-content; }

/* squarish toggles, one row */
.sheet-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 1.4rem; }
.sheet-row.single { grid-template-columns: 1fr; }
.opt-btn {
  display: flex; flex-direction: column; align-items: center; gap: 9px;
  font-family: var(--pixel); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg); opacity: 0.7;
  background: var(--panel); border: 2px solid var(--border); border-radius: 14px;
  padding: 18px 10px 15px; cursor: pointer;
  transition: border-color 0.15s, opacity 0.15s, box-shadow 0.15s;
}
.opt-btn b { font-size: 13px; opacity: 0.55; }
.opt-btn.active {
  opacity: 1;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset, 0 0 20px color-mix(in srgb, var(--accent) 22%, transparent);
}
.opt-btn.active b { color: var(--accent); opacity: 1; }

.sheet-label em { font-style: normal; color: var(--fg); text-transform: uppercase; opacity: 0.8; }

/* theme swatch tiles, one row */
.theme-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.theme-tile {
  aspect-ratio: 1.45; border-radius: 14px;
  border: 2px solid var(--border); cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.theme-tile.colorful { background: linear-gradient(135deg, #22d3ee, #f87171); }
.theme-tile.pastels { background: linear-gradient(135deg, #fbe7a1, #f6c6c6); }
.theme-tile.catppuccin { background: linear-gradient(135deg, #cba6f7, #89dceb); }
.theme-tile.crt { background: linear-gradient(135deg, #33ff66, #0a4020); }
.theme-tile.active {
  border-color: var(--fg);
  transform: scale(1.05);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 45%, transparent), 0 0 22px color-mix(in srgb, var(--accent) 30%, transparent);
}
/* ---------- desktop: phone-frame stage + guide panel ---------- */
#desk-panel { display: none; }

@media (min-width: 900px) and (pointer: fine) {
  main { justify-content: center; align-items: center; gap: 52px; padding: 10px 0; }
  #game-wrap {
    flex: 0 0 auto;
    width: min(47.5dvh, 460px);
    height: min(95dvh, 920px);
    border: 3px solid #2b3140;
    border-radius: 42px;
    overflow: hidden;
    background: #05070a;
    box-shadow:
      0 0 0 1px rgba(0, 0, 0, 0.8),
      0 24px 70px rgba(0, 0, 0, 0.55),
      0 0 90px color-mix(in srgb, var(--accent) 12%, transparent);
  }
  /* type scales with the frame, not the monitor */
  .menu-title { font-size: 26px; }
  .tagline, .menu-meta { font-size: 11px; }
  #hud { padding-top: 1.7rem; } /* breathing room under the bezel */
  #desk-panel {
    display: flex; flex-direction: column; gap: 16px; align-items: flex-start;
    max-width: 240px;
  }
  .panel-label {
    font-family: var(--pixel); font-size: 11px; letter-spacing: 0.14em; line-height: 1.8;
    color: var(--accent);
    text-shadow: 0 0 14px color-mix(in srgb, var(--accent) 45%, transparent);
  }
  #desk-panel img {
    border-radius: 12px;
    border: 1px solid var(--border);
    background: white;
    padding: 8px;
  }
  .panel-note { font-size: 12px; line-height: 1.7; opacity: 0.6; }
  .panel-label-keys {
    margin-top: 22px;
    padding-top: 18px;
    border-top: 1px dashed var(--border);
    align-self: stretch;
  }
  .keys { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; margin-top: 6px; }
  .keys li { font-size: 12px; opacity: 0.75; display: flex; align-items: center; gap: 10px; }
  .keys b {
    font-family: var(--pixel); font-size: 9px; letter-spacing: 0.08em;
    background: var(--panel); border: 1px solid var(--border); border-radius: 6px;
    padding: 5px 8px; min-width: 3.4em; text-align: center;
    box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.35);
  }
}

/* ---------- mobile ---------- */
@media (max-width: 640px) {
  header { display: none; }
}