:root {
  --ink: #101014;
  --ink-elevated: #1a1a21;
  --ink-border: #2e2e38;
  --cream: #f3efe6;
  --cream-dim: #ddd8cc;
  --yellow: #ffd60a;
  --yellow-press: #e6bf00;
  --red: #ff453a;
  --green: #32d74b;
  --muted: #8e8e98;
  --font-logo: 'Archivo Black', system-ui, sans-serif;
  --font-ui: 'Inter', system-ui, sans-serif;
  --font-score: 'JetBrains Mono', ui-monospace, monospace;
  --touch: 48px;
  --edge: max(16px, env(safe-area-inset-left));
}

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

html {
  color-scheme: dark;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  font-family: var(--font-ui);
  color: var(--cream);
}

#game {
  display: block;
  width: 100%;
  height: 100%;
}

#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

#gameplay-ui::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.35) 0%, transparent 22%, transparent 78%, rgba(0, 0, 0, 0.25) 100%);
}

/* —— Buttons —— */
.btn-main {
  pointer-events: auto;
  display: block;
  width: 100%;
  min-height: var(--touch);
  padding: 14px 20px;
  border: 3px solid #000;
  border-radius: 6px;
  background: var(--yellow);
  color: #000;
  font-family: var(--font-logo);
  font-size: 1.15rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 4px 4px 0 #000;
  transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.08s;
}

.btn-main:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 #000;
  background: var(--yellow-press);
}

.btn-main:focus-visible {
  outline: 3px solid var(--cream);
  outline-offset: 3px;
}

.btn-secondary {
  pointer-events: auto;
  width: 100%;
  min-height: 44px;
  border: 2px solid var(--ink-border);
  border-radius: 6px;
  background: var(--ink-elevated);
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
}

.btn-secondary:active {
  background: var(--ink-border);
}

.icon-btn {
  pointer-events: auto;
  width: var(--touch);
  height: var(--touch);
  border: 2px solid var(--ink-border);
  border-radius: 8px;
  background: var(--ink-elevated);
  color: var(--cream);
  display: grid;
  place-items: center;
}

.icon-btn:active {
  background: var(--ink-border);
}

.icon-btn svg {
  width: 22px;
  height: 22px;
}

/* —— Main menu —— */
#menu {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  pointer-events: auto;
  z-index: 4;
}

#menu.show {
  display: flex;
}

.menu-preview-fade {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 52%;
  background: linear-gradient(to bottom, transparent 0%, rgba(16, 16, 20, 0.55) 35%, var(--ink-elevated) 88%);
  pointer-events: none;
  z-index: 1;
}

.dock-title {
  font-family: var(--font-logo);
  font-size: 2rem;
  line-height: 1.05;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.dock-title em {
  font-style: normal;
  color: var(--yellow);
}

.menu-tag {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.menu-settings-btn {
  position: absolute;
  top: max(12px, env(safe-area-inset-top));
  right: max(12px, env(safe-area-inset-right));
  z-index: 3;
}

.menu-dock {
  position: relative;
  z-index: 2;
  margin-top: auto;
  flex-shrink: 0;
  width: 100%;
  background: var(--ink-elevated);
  color: var(--cream);
  padding: 20px var(--edge) max(28px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--ink-border);
  min-height: 36vh;
  display: flex;
  align-items: flex-start;
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.45);
}

.menu-dock-inner {
  max-width: 400px;
  margin: 0 auto;
}

.best-chip {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--ink);
  border: 1px solid var(--ink-border);
}

.best-chip span {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

#menu-best {
  font-family: var(--font-score);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--yellow);
}

.menu-controls {
  margin-top: 14px;
  font-size: 0.75rem;
  font-weight: 500;
  text-align: center;
  color: var(--muted);
}

/* —— Settings (console list) —— */
#settings {
  position: fixed;
  inset: 0;
  display: none;
  flex-direction: column;
  background: var(--ink);
  pointer-events: auto;
  z-index: 6;
}

#settings.show {
  display: flex;
}

.settings-top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: max(12px, env(safe-area-inset-top)) var(--edge) 12px;
  border-bottom: 1px solid var(--ink-border);
}

.settings-top h2 {
  font-family: var(--font-logo);
  font-size: 1.1rem;
  letter-spacing: 0.06em;
}

.settings-list {
  flex: 1;
  overflow: auto;
  padding: 8px 0 max(24px, env(safe-area-inset-bottom));
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  padding: 12px var(--edge);
  border-bottom: 1px solid var(--ink-border);
}

.settings-row label:first-child {
  font-size: 0.95rem;
  font-weight: 600;
  display: block;
}

.settings-row .desc {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  margin-top: 2px;
}

.toggle {
  position: relative;
  width: 52px;
  height: 30px;
  flex-shrink: 0;
}

.toggle input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
  z-index: 1;
}

.toggle-ui {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  background: var(--ink-border);
  border: 2px solid #000;
  border-radius: 4px;
  transition: background 0.15s;
}

.toggle-ui::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--cream);
  border: 2px solid #000;
  border-radius: 2px;
  transition: transform 0.15s;
}

.toggle input:checked + .toggle-ui {
  background: var(--yellow);
}

.toggle input:checked + .toggle-ui::after {
  transform: translateX(22px);
}

.toggle input:focus-visible + .toggle-ui {
  outline: 2px solid var(--cream);
  outline-offset: 2px;
}

/* —— Gameplay HUD —— */
#gameplay-ui {
  position: absolute;
  inset: 0;
  opacity: 1;
  transition: opacity 0.2s;
}

#gameplay-ui.hidden {
  opacity: 0;
}

#gameplay-ui > * {
  pointer-events: auto;
}

#top-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: var(--touch) 1fr auto;
  align-items: stretch;
  gap: 0;
  padding-top: env(safe-area-inset-top);
  background: rgba(16, 16, 20, 0.92);
  border-bottom: 3px solid var(--yellow);
  z-index: 1;
}

#btn-settings-game {
  margin: 6px 0 6px var(--edge);
  align-self: center;
}

#score-block {
  text-align: center;
  padding: 8px 8px 10px;
}

#score {
  font-family: var(--font-score);
  font-size: 1.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--cream);
}

#tier {
  margin-top: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--yellow);
}

#combo {
  font-family: var(--font-score);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--green);
  opacity: 0;
  margin-top: 2px;
}

#combo.show {
  opacity: 1;
}

#best {
  align-self: center;
  padding-right: var(--edge);
  font-family: var(--font-score);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--muted);
  text-align: right;
  min-width: 72px;
}

#hint {
  position: absolute;
  bottom: max(20px, env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  pointer-events: none;
  z-index: 1;
}

#flash {
  position: absolute;
  inset: 0;
  background: var(--red);
  opacity: 0;
  pointer-events: none;
  z-index: 5;
  transition: opacity 0.06s;
}

#magnet-bar {
  position: absolute;
  top: calc(env(safe-area-inset-top) + 58px);
  left: var(--edge);
  right: var(--edge);
  height: 8px;
  background: var(--ink-border);
  border: 2px solid #000;
  opacity: 0;
  z-index: 1;
}

#magnet-bar.show {
  opacity: 1;
}

#magnet-fill {
  height: 100%;
  width: 100%;
  background: var(--green);
  transform-origin: left;
  transform: scaleX(1);
}

.lane-btn {
  display: none;
  position: absolute;
  bottom: max(72px, calc(env(safe-area-inset-bottom) + 52px));
  width: var(--touch);
  height: var(--touch);
  border: 3px solid #000;
  border-radius: 8px;
  background: var(--cream);
  color: #000;
  font-size: 1.1rem;
  font-weight: 700;
  box-shadow: 3px 3px 0 #000;
}

.lane-btn.left {
  left: var(--edge);
}

.lane-btn.right {
  right: max(16px, env(safe-area-inset-right));
}

@media (pointer: coarse) {
  .lane-btn {
    display: block;
  }
}

/* —— Game over —— */
#overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: flex-end;
  pointer-events: auto;
  z-index: 3;
  background: rgba(0, 0, 0, 0.5);
}

#overlay.show {
  display: flex;
}

.overlay-dock {
  width: 100%;
  background: var(--ink-elevated);
  color: var(--cream);
  padding: 24px var(--edge) max(28px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--ink-border);
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.5);
}

.overlay-dock h1 {
  font-family: var(--font-logo);
  font-size: 1.75rem;
  color: var(--red);
  -webkit-text-stroke: 2px #000;
  margin-bottom: 8px;
}

#final-score {
  font-family: var(--font-score);
  font-size: 1.5rem;
  font-weight: 700;
}

.overlay-dock .sub {
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0.65;
  margin: 4px 0 16px;
}

.btn-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 400px;
  margin: 0 auto;
}

/* —— Callouts —— */
#callouts {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  overflow: hidden;
}

.callout {
  position: absolute;
  bottom: 42%;
  font-family: var(--font-logo);
  font-size: 1.6rem;
  letter-spacing: 0.08em;
  color: var(--yellow);
  -webkit-text-stroke: 2px #000;
  paint-order: stroke fill;
  text-shadow: 3px 3px 0 #000;
  animation: callout-pop 1s ease-out forwards;
  transform: translateX(-50%);
}

.callout-big {
  font-size: 2.1rem;
}

@keyframes callout-pop {
  0% {
    opacity: 0;
    transform: translateX(-50%) scale(0.5);
  }
  20% {
    opacity: 1;
    transform: translateX(-50%) scale(1.08);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(-60px) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .callout {
    animation: none;
    opacity: 1;
  }
}