:root {
  color-scheme: dark;
  --color-bg: #0b0e1a;
  --color-text: #eef1ff;
  --color-text-dim: #9aa3c7;
  --color-accent: #ffd24a;
  --color-accent-2: #5ee6c8;
  --color-card: #141a2e;
  --color-border: #2a3354;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.game {
  position: fixed;
  inset: 0;
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

/* HUD */
.hud {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  pointer-events: none;
}

.hud__left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hud__coins {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
}

.hud__coin-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff3c4, var(--color-accent) 55%, #c98f00);
  box-shadow: 0 0 14px rgba(255, 210, 74, 0.7);
}

.hud__coin-total {
  color: var(--color-text-dim);
  font-size: 1.1rem;
  font-weight: 600;
}

.hud__timer {
  font-size: 0.95rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-dim);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
  padding-left: 2px;
}

.hud__lives {
  display: flex;
  gap: 6px;
  padding-left: 1px;
  font-size: 1.25rem;
  line-height: 1;
}

.hud__heart {
  color: #ff5d8f;
  text-shadow: 0 0 10px rgba(255, 93, 143, 0.8), 0 2px 8px rgba(0, 0, 0, 0.6);
  transition: opacity 0.25s ease, transform 0.25s ease, filter 0.25s ease;
}

.hud__heart--lost {
  opacity: 0.22;
  filter: grayscale(1);
  transform: scale(0.78);
}

.hud__level {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  background: rgba(11, 14, 26, 0.55);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 18px;
  backdrop-filter: blur(6px);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
}

.hud__hint {
  max-width: 340px;
  text-align: right;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--color-text-dim);
  background: rgba(11, 14, 26, 0.55);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 8px 16px;
  backdrop-filter: blur(6px);
  transition: opacity 0.6s ease;
}

.hud__hint--faded { opacity: 0; }

/* Level banner (flashes on level start) */
.level-banner {
  position: absolute;
  top: 26%;
  left: 0;
  right: 0;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.level-banner--show { opacity: 1; }

.level-banner__num {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  text-shadow: 0 0 18px rgba(94, 230, 200, 0.8);
  margin-bottom: 6px;
}

.level-banner__name {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.8), 0 0 40px rgba(94, 230, 200, 0.3);
}

/* Toast (portal status messages) */
.toast {
  position: absolute;
  bottom: 16%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--color-text);
  background: rgba(11, 14, 26, 0.75);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 10px 24px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
}

.toast--show { opacity: 1; }

/* Win overlay */
.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(7, 9, 18, 0.7);
  backdrop-filter: blur(8px);
}

.overlay[hidden] { display: none; }

.overlay__card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 40px 56px;
  text-align: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.overlay__title {
  font-size: 2rem;
  margin-bottom: 8px;
  color: var(--color-accent);
}

.overlay__sub {
  color: var(--color-text);
  margin-bottom: 6px;
  font-size: 1.15rem;
  font-weight: 600;
}

.overlay__best {
  color: var(--color-text-dim);
  margin-bottom: 24px;
  font-size: 0.95rem;
}

.overlay__btn {
  font: inherit;
  font-weight: 700;
  font-size: 1rem;
  color: #08101c;
  background: var(--color-accent-2);
  border: none;
  border-radius: 12px;
  padding: 14px 28px;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  box-shadow: 0 6px 20px rgba(94, 230, 200, 0.35);
}

.overlay__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(94, 230, 200, 0.5);
}

.overlay__btn:focus-visible {
  outline: 3px solid var(--color-text);
  outline-offset: 3px;
}

/* Start screen */
.overlay--start .overlay__card {
  max-width: 440px;
}

.overlay__kicker {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  text-shadow: 0 0 18px rgba(94, 230, 200, 0.7);
  margin-bottom: 6px;
}

.overlay--start .overlay__title {
  font-size: 2.6rem;
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.overlay--start .overlay__sub {
  color: var(--color-text-dim);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.5;
  margin-bottom: 24px;
}

.controls {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 auto 28px;
  text-align: left;
  max-width: 320px;
}

.controls li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-text);
}

.controls li span {
  color: var(--color-text-dim);
}

kbd {
  display: inline-block;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text);
  background: rgba(11, 14, 26, 0.8);
  border: 1px solid var(--color-border);
  border-bottom-width: 3px;
  border-radius: 7px;
  padding: 7px 10px;
  min-width: 30px;
  text-align: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

/* On-screen touch controls (shown on touch devices while playing) */
.touch-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 0 24px max(24px, env(safe-area-inset-bottom)) 24px;
  pointer-events: none;
  z-index: 5;
}

.touch-controls__move {
  display: flex;
  gap: 16px;
}

.tc-btn {
  pointer-events: auto;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--color-text);
  background: rgba(20, 26, 46, 0.55);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.45);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.08s ease, background 0.08s ease;
}

.tc-btn:active {
  background: rgba(94, 230, 200, 0.3);
  transform: scale(0.92);
}

.tc-btn--jump {
  width: 88px;
  height: 88px;
  font-size: 2rem;
  color: var(--color-accent-2);
  background: rgba(94, 230, 200, 0.16);
  border-color: var(--color-accent-2);
}

/* Reveal touch controls only on touch devices, once play has started */
@media (hover: none) and (pointer: coarse) {
  body.playing .touch-controls { display: flex; }
}

/* Small-screen / phone layout */
@media (max-width: 560px) {
  .hud { padding: 12px 14px; gap: 10px; }
  .hud__coins { font-size: 1.25rem; }
  .hud__level { font-size: 0.78rem; padding: 6px 12px; }

  .overlay__card { padding: 28px 22px; }
  .overlay--start .overlay__card { max-width: calc(100vw - 28px); }
  .overlay--start .overlay__title { font-size: 2rem; }
  .controls { max-width: 100%; }
  .level-banner__name { font-size: 2.1rem; }
}