/* Fonts, self-hosted (the game portals reject any external request).
   Instrument Sans + JetBrains Mono, SIL Open Font License - see vendor/fonts/OFL-*.txt.
   Latin + Turkish subset, woff2. */
@font-face { font-family: 'Instrument Sans'; font-style: normal; font-weight: 400; font-display: swap; src: url('vendor/fonts/InstrumentSans-Regular.woff2') format('woff2'); }
@font-face { font-family: 'Instrument Sans'; font-style: normal; font-weight: 700; font-display: swap; src: url('vendor/fonts/InstrumentSans-Bold.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url('vendor/fonts/JetBrainsMono-Bold.woff2') format('woff2'); }

/* Palette: the promo video's own world (navy void, violet / pink / cyan bands,
   amber rule) plus the "Derin uzay" accents of the daily-video theme catalogue
   (sosyal/uret/tema.mjs). Every text/background pair below is >= 4.5:1
   (checked in test/contrast.spec.js). */
:root {
  --ink: #0d071a;
  --ink-2: #140b45;
  --paper: #eef1ff;
  --cyan: #7bdff6;     /* video cyan band; primary button */
  --pink: #f577b2;     /* video pink band */
  --lav: #b5a4fa;      /* video violet band */
  --amber: #ffab40;    /* uzay theme amber; new record, rule */
  --mint: #7dffc8;
  --danger: #ff5c5c;
  --sans: 'Instrument Sans', 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Consolas, monospace;
  --score-c: var(--paper);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.5, 0, 0.75, 0);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  background: var(--ink);
  overflow: hidden;
  cursor: crosshair;
  font-family: var(--sans);
  color: var(--paper);
}

canvas { display: block; position: fixed; inset: 0; touch-action: none; }

:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.card :focus-visible { outline-color: var(--ink); }

.hidden { display: none !important; }

/* ---------- Mono labels ---------- */
.tag {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(238, 241, 255, 0.78);
}
.cornerL { position: fixed; top: 22px; left: 22px; z-index: 5; opacity: 0; transition: opacity 0.22s var(--ease-out); pointer-events: none; }
body.playing .cornerL { opacity: 1; }
.cornerTL { position: absolute; top: 22px; left: 22px; }

/* ---------- HUD ---------- */
#hud {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  pointer-events: none;
  z-index: 5;
  opacity: 0;
  transition: opacity 0.22s var(--ease-out);
}
#hud.visible { opacity: 1; }

#score {
  font-family: var(--sans);
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--score-c);
  letter-spacing: 0.01em;
  font-variant-numeric: tabular-nums;
  transition: color 0.25s var(--ease-out);
  transform-origin: 50% 0;
}
#score.beat { animation: beat 0.3s var(--ease-out); }
@keyframes beat { from { transform: scale(1.14); } to { transform: scale(1); } }

#powerups { display: flex; gap: 8px; margin-top: 6px; }
.powerchip {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  padding: 5px 10px;
  border-radius: 6px;
  color: var(--paper);
  background: rgba(13, 7, 26, 0.72);
  border: 2px solid rgba(238, 241, 255, 0.35);
}
.icon { width: 16px; height: 16px; vertical-align: middle; mix-blend-mode: screen; object-fit: contain; }

/* ---------- Corner buttons ---------- */
#corner { position: fixed; top: 14px; right: 14px; z-index: 6; display: flex; gap: 8px; }
.iconBtn {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--paper);
  background: rgba(13, 7, 26, 0.6);
  border: 2px solid rgba(238, 241, 255, 0.4);
  cursor: pointer;
  transition: transform 0.09s var(--ease-out), border-color 0.12s;
}
.iconBtn svg { width: 22px; height: 22px; fill: currentColor; }
.iconBtn:hover { border-color: var(--cyan); }
.iconBtn:active { transform: scale(0.96); }
#pauseBtn { opacity: 0; pointer-events: none; transition: opacity 0.22s var(--ease-out); }
#pauseBtn.visible { opacity: 1; pointer-events: auto; }
#muteBtn .slash { display: none; }
#muteBtn[aria-pressed="true"] .slash { display: inline; }
#muteBtn[aria-pressed="true"] .waves { display: none; }

/* ---------- Hint (first run) ---------- */
.hint {
  position: fixed;
  left: 50%;
  bottom: max(9vh, 48px);
  transform: translateX(-50%);
  z-index: 5;
  max-width: min(92vw, 520px);
  text-align: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  border-radius: 8px;
  padding: 10px 16px;
  pointer-events: none;
  animation: rise 0.22s var(--ease-out);
}
@keyframes rise { from { opacity: 0; transform: translate(-50%, 12px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ---------- Hit flash + screen band ---------- */
#hitFlash {
  position: fixed; inset: 0; z-index: 8; pointer-events: none; opacity: 0;
  background: var(--danger);
  transition: opacity 0.25s var(--ease-out);
}
#hitFlash.on { opacity: 0.24; transition: opacity 0.02s linear; }

/* Screen transition: an iris of a palette colour closes (260 ms) and opens (200 ms). */
#band {
  position: fixed; inset: 0; z-index: 20; pointer-events: none;
  background: var(--pink);
  clip-path: circle(0% at 50% 50%);
  opacity: 1;
}
#band.cover { clip-path: circle(150% at 50% 50%); transition: clip-path 0.26s var(--ease-in); }
#band.reveal { clip-path: circle(150% at 50% 50%); opacity: 0; transition: opacity 0.2s var(--ease-out); }

/* ---------- Virtual joystick (touch) ---------- */
#joystick {
  position: fixed; width: 110px; height: 110px; border-radius: 50%;
  background: rgba(238, 241, 255, 0.06);
  border: 2px solid rgba(238, 241, 255, 0.4);
  z-index: 7; pointer-events: none; transform: translate(-50%, -50%);
}
#joystick.hidden { display: none; }
#joystickKnob {
  position: absolute; top: 50%; left: 50%; width: 46px; height: 46px; border-radius: 50%;
  background: var(--cyan); transform: translate(-50%, -50%);
}

/* ---------- Overlays ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  background: radial-gradient(ellipse at 50% 45%, rgba(13, 7, 26, 0.5), rgba(13, 7, 26, 0.9));
  transition: opacity 0.22s var(--ease-out), visibility 0.22s;
}
.overlay.hidden {
  display: flex !important;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.14s var(--ease-in), visibility 0.14s;
  visibility: hidden; /* leaves the tab order and the accessibility tree */
}
#settingsScreen { z-index: 12; }

.stack, .card > * { animation: rise-in 0.22s var(--ease-out) both; }
.stack > * { animation: rise-in 0.22s var(--ease-out) both; }
.stack { display: flex; flex-direction: column; align-items: center; gap: 16px; animation: none; }
.stack > :nth-child(2) { animation-delay: 40ms; }
.stack > :nth-child(3) { animation-delay: 80ms; }
.stack > :nth-child(4) { animation-delay: 120ms; }
.stack > :nth-child(5) { animation-delay: 160ms; }
.stack > :nth-child(6) { animation-delay: 200ms; }
.card > :nth-child(2) { animation-delay: 40ms; }
.card > :nth-child(3) { animation-delay: 80ms; }
.card > :nth-child(4) { animation-delay: 120ms; }
.card > :nth-child(5) { animation-delay: 160ms; }
.overlay.hidden .stack > *, .overlay.hidden .card > * { animation: none; }
@keyframes rise-in { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.overlay h1 {
  font-family: var(--sans);
  font-size: clamp(3rem, 12vw, 6.4rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.stripe { display: flex; width: min(320px, 60vw); height: 6px; margin-top: -4px; }
.stripe i { flex: 1; }
.stripe i:nth-child(1) { background: var(--lav); }
.stripe i:nth-child(2) { background: var(--pink); }
.stripe i:nth-child(3) { background: var(--cyan); }

.how {
  max-width: 34ch;
  font-size: 1.02rem;
  line-height: 1.45;
  color: rgba(238, 241, 255, 0.86);
}
.row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 6px;
  padding: 13px 28px;
  min-height: 46px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.09s var(--ease-out), background 0.12s, color 0.12s, border-color 0.12s;
}
.btn:active { transform: scale(0.96); }
.btn.primary { background: var(--cyan); color: var(--ink); }
.btn.primary:hover { background: #a4ebfa; }
.btn.big { font-size: 1.45rem; padding: 18px 64px; min-height: 64px; letter-spacing: 0.14em; }
.btn.ghost { background: transparent; color: var(--paper); border-color: rgba(238, 241, 255, 0.7); }
.btn.ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn.ghost.active, .btn.ghost[aria-pressed="true"] { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn.small { padding: 8px 16px; min-height: 40px; font-size: 0.82rem; }
.modeToggle { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.14em; }

/* ---------- Cards (game over / pause / settings) ---------- */
.card {
  width: min(92vw, 400px);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  padding: 28px 26px 26px;
  border-radius: 22px;
  background: var(--paper);
  color: var(--ink);
  border-top: 8px solid var(--card-accent, var(--pink));
}
.card .tag { color: rgba(13, 7, 26, 0.82); text-align: left; }
.card .btn.ghost { color: var(--ink); border-color: rgba(13, 7, 26, 0.75); }
.card .btn.ghost:hover { border-color: var(--ink); background: rgba(13, 7, 26, 0.08); }
.card .btn.ghost[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.card .btn.primary { color: var(--ink); }

#finalScore {
  font-size: clamp(3.4rem, 16vw, 5rem);
  font-weight: 700;
  line-height: 1;
  text-align: left;
  font-variant-numeric: tabular-nums;
}
.stamp {
  align-self: flex-start;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  padding: 5px 10px;
  border-radius: 4px;
  background: var(--amber);
  color: var(--ink);
  transform: rotate(-2deg);
  animation: stamp 0.26s var(--ease-out) 0.3s both;
}
@keyframes stamp { from { opacity: 0; transform: rotate(-2deg) scale(1.5); } to { opacity: 1; transform: rotate(-2deg) scale(1); } }
.stamp.hidden { display: none; }

.dailyInfo { text-align: left; }
#newDailyBest.hidden { display: none; }
.setRow { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-weight: 700; padding: 6px 0; }
.seg { display: flex; gap: 6px; }

/* ---------- Leaderboard ---------- */
.leaderboard {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: rgba(238, 241, 255, 0.78);
  min-width: 170px;
}
.card .leaderboard { color: rgba(13, 7, 26, 0.82); }
.lbRow { display: flex; justify-content: space-between; padding: 2px 8px; }
.lbRow:first-child { color: var(--amber); }
.card .lbRow:first-child { color: var(--ink); }
.lbEmpty { justify-content: center; }

/* Language switch: "kararma" (fade) of the daily-video transition set. */
.langswap .stack, .langswap .card { animation: kararma 0.25s var(--ease-out); }
@keyframes kararma { from { opacity: 0; } to { opacity: 1; } }

/* Recording mode (?rec=1): world only, no interface. */
body.rec #hud, body.rec #best, body.rec #corner, body.rec #hint, body.rec .overlay, body.rec #band { display: none !important; }
body.rec, body.rec html { cursor: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition-duration: 0.01ms !important; }
  #band { display: none; }
}
@media (max-height: 520px) {
  .overlay h1 { font-size: 2.6rem; }
  .btn.big { padding: 12px 44px; min-height: 52px; font-size: 1.15rem; }
  .stack { gap: 10px; }
  .leaderboard { display: none; }
}

/* Run code on the game-over card: one tap selects the whole code (or the link). */
.runCode .code { user-select: all; -webkit-user-select: all; letter-spacing: .12em; word-break: break-all; }