:root {
  --bg: #1a1a1a;
  --fg: #e0e0e0;
  --muted: #666;
  --dim: #333;
  --surface: #242424;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --up: #6db4ee;
  --up2: #58d8c9;
  --accent: #ffd866;
  --good: #8dd88d;
  --bad: #ff6b6b;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}
.topbar {
  position: fixed;
  top: 1.25rem;
  left: 1.5rem;
  right: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
  /* Full width, so let clicks through the empty middle. */
  pointer-events: none;
}
.topbar > * {
  pointer-events: auto;
}
.mic-debug {
  font-family: var(--mono);
  white-space: pre; /* keep the padStart alignment; HTML collapses runs of spaces */
  font-size: 0.65rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  font-family:
    "Lexend Deca",
    system-ui,
    -apple-system,
    sans-serif;
  font-size: 1.75rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  user-select: none;
  text-decoration: none;
  min-width: 0;
}
.brand .trumpet {
  display: inline-block;
  width: 44px;
  height: 44px;
  background: var(--accent);
  -webkit-mask: url("logo.png") center/contain no-repeat;
  mask: url("logo.png") center/contain no-repeat;
  transform: translateY(-3px);
}
.brand .wordmark {
  margin-left: -0.4rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.brand .ape {
  color: var(--accent);
}
.brand .peggios {
  color: var(--muted);
}
/* Locked: a stray drag would scroll instead of tapping. dvh tracks the address bar. */
html,
body {
  height: 100dvh;
  overflow: hidden;
  overscroll-behavior: none;
}
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  /* Drops the double-tap-to-zoom delay; pinch zoom still works. */
  touch-action: manipulation;
}
/* Results is the one view that runs long, so only it scrolls. */
#app {
  max-height: 100%;
}
#app:has(.results) {
  overflow-y: auto;
  overscroll-behavior: contain;
}
.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 100%;
}
/* Not a stage gap: this grows the mobile auto row, so the space comes from above. */
.play-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}
.scale {
  /* fitChordSize(): largest size the longest possible name still fits at. */
  font-size: var(--scale-size, 3.5rem);
  white-space: nowrap;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.02em;
  transition: color 0.15s;
}
.scale.success {
  color: var(--good);
}
.mode-label {
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.scale-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}
.scale-title .scale {
  margin-bottom: 0.8rem;
}
.hint {
  color: var(--muted);
  font-size: 0.9rem;
}
.hint strong {
  color: var(--fg);
  font-weight: 600;
}
.stats {
  display: flex;
  gap: 3rem;
  color: var(--muted);
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}
/* Fixed width per field, so 9 -> 10 doesn't shift the centred row. */
.stats strong {
  color: var(--fg);
  font-weight: 500;
  display: inline-block;
  text-align: right;
}
.stats .stat-count strong {
  min-width: var(--count-w, 2ch);
}
/* Layers share one grid cell so swapping them never shifts the page. */
.swap {
  display: grid;
}
.swap > .layer {
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  transition: opacity 0.3s ease;
}
.swap > .layer.faded {
  opacity: 0;
  pointer-events: none;
}
.widget-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}
.mode-toggles {
  flex-wrap: wrap;
  justify-content: center;
  max-width: 40rem;
}
.option-bar {
  display: flex;
  gap: 0.1rem;
  justify-content: center;
  align-items: center;
  background: var(--surface);
  border-radius: 5px;
  padding: 0.3rem 0.55rem;
}
.option-icon {
  color: var(--muted);
  line-height: 1;
  display: inline-flex;
  align-items: center;
  padding-right: 0.4rem;
  justify-content: center;
}
.option-icon svg {
  width: 16px;
  height: 16px;
  display: block;
}
.option-icon.icon-sun svg,
.option-icon.icon-moon svg {
  width: 15px;
  height: 15px;
}
.option-icon.icon-moon {
  padding-right: 0;
  padding-left: 0.4rem;
}
.option-icon.icon-clef {
  font-family: "Bravura Text", "Segoe UI Symbol", "Apple Symbols", serif;
  font-size: 1.9rem;
  line-height: 0.6;
  transform: translate(-1px, 1px);
}
.option-bar button {
  background: transparent;
  color: var(--muted);
  border: none;
  padding: 0.1rem 0.5rem;
  font-family: inherit;
  font-size: 0.72rem;
  cursor: pointer;
  border-radius: 3px;
  font-variant-numeric: tabular-nums;
  line-height: 1.3;
  transition: color 0.1s;
}
/* On touch, hover sticks after a tap and the toggle looks unchanged. */
@media (hover: hover) {
  .option-bar button:hover {
    color: var(--fg);
  }
}
.option-bar button.selected {
  color: var(--accent);
}
.option-bar button:active {
  transform: scale(0.94);
}

.sequence {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  max-width: 60rem;
}
.sequence .note {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  min-height: 1.9rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--dim);
  border-radius: 4px;
  font-size: 0.95rem;
  color: var(--muted);
  transition:
    background 0.1s,
    color 0.1s,
    border-color 0.1s;
}
/* An empty pill has no line box; a zero-width char keeps the height fixed. */
.sequence .note::before {
  content: "\200b";
}
.sequence .note.phase-up {
  background: color-mix(in srgb, var(--up) 15%, transparent);
  color: var(--up);
  border-color: var(--up);
}
.sequence .note.phase-up2 {
  background: color-mix(in srgb, var(--up2) 18%, transparent);
  color: var(--up2);
  border-color: var(--up2);
}
.sequence .note.phase-down {
  background: color-mix(in srgb, var(--good) 15%, transparent);
  color: var(--good);
  border-color: var(--good);
}
.sequence .note.phase-arp {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
  color: var(--accent);
  border-color: var(--accent);
}
.sequence .note.current {
  box-shadow: 0 0 0 2px var(--fg);
}
.sequence .note.placeholder {
  border-color: transparent;
}

.heard {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 140px;
  width: 120px;
}
.heard svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}
.heard-text {
  fill: var(--fg);
  font-size: 22px;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  transition: fill 0.12s ease;
}
.tuning-arc {
  stroke: var(--dim);
  stroke-width: 3;
  fill: none;
  stroke-linecap: round;
}

.results {
  max-width: 44rem;
  width: 100%;
  text-align: center;
}
.session-num {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}
.deltas {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.deltas .better {
  color: var(--good);
}
.deltas .worse {
  color: var(--bad);
}
.summary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem 2rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--dim);
}
.summary div span {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.summary div strong {
  font-size: 1.4rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}
.summary div em {
  display: block;
  color: var(--fg);
  font-size: 0.8rem;
  font-style: normal;
  margin-top: 0.15rem;
}
.list {
  max-height: 35vh;
  overflow-y: auto;
  font-variant-numeric: tabular-nums;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}
.list div {
  display: grid;
  grid-template-columns: 6rem 1fr auto;
  gap: 1rem;
  align-items: baseline;
  text-align: left;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--dim);
}
.list .row-mode {
  color: var(--muted);
}
.list .fast .row-mode,
.list .slow .row-mode {
  color: inherit;
  opacity: 0.7;
}
.list div:last-child {
  border-bottom: none;
}
.list .fast {
  color: var(--accent);
}
.list .slow {
  color: var(--bad);
}

.mic-warn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bad);
  color: #1a1a1a;
  border: none;
  padding: 0.4rem 0.8rem;
  border-radius: 5px;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transform: translateY(3px);
  animation: mic-pulse 1.8s ease-in-out infinite;
}
.mic-warn::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #1a1a1a;
}
.mic-warn:active {
  transform: translateY(3px) scale(0.96);
}
.mic-warn.hidden {
  display: none;
}
@keyframes mic-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--bad) 55%, transparent);
  }
  70% {
    box-shadow: 0 0 0 7px transparent;
  }
}
@media (prefers-reduced-motion: reduce) {
  .mic-warn {
    animation: none;
  }
}

/* Roomier screens: the phone-tuned sizes read tiny on a large display. */
@media (min-width: 621px) {
  .mode-label {
    font-size: 1.3rem;
    letter-spacing: 0.2em;
  }
  .scale-title {
    gap: 0.55rem;
  }
  .scale-title .scale {
    margin-bottom: 1rem;
  }
  .play-area {
    gap: 2rem;
  }
  .sequence {
    gap: 0.5rem;
  }
  .sequence .note {
    min-width: 3.4rem;
    min-height: 2.6rem;
    padding: 0.5rem 0.8rem;
    font-size: 1.25rem;
    border-radius: 6px;
  }
  .heard {
    width: 168px;
    height: 196px;
  }
  .heard-text {
    font-size: 30px;
  }
  .stats {
    font-size: 1.2rem;
    gap: 3.5rem;
  }
  .hint {
    font-size: 1rem;
  }
  .option-bar {
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
  }
  .option-bar button {
    font-size: 0.85rem;
    padding: 0.15rem 0.6rem;
  }
  .option-icon svg {
    width: 19px;
    height: 19px;
  }
  .option-icon.icon-sun svg,
  .option-icon.icon-moon svg {
    width: 18px;
    height: 18px;
  }
  .option-icon.icon-clef {
    font-size: 2.2rem;
  }
  .swap > .layer {
    gap: 1.1rem;
  }
  .widget-row {
    gap: 0.7rem;
  }
  .summary div strong {
    font-size: 1.6rem;
  }
  .list {
    font-size: 1rem;
  }
}

/* Narrow screens: let the 8 note pills shrink to share one row. */
@media (max-width: 620px) {
  /* Top-light, bottom-heavy: shifts the content box up without resizing it. */
  body {
    padding: 0.25rem 0.5rem 1.75rem;
    align-items: stretch;
  }
  /* Shrink-to-fit by default, so the sequence's width:100% would resolve
     against its own content. Stretch the chain. */
  #app,
  .stage,
  .play-area {
    width: 100%;
  }
  /* The stage centres itself; the results screen is a plain block, so
     centre it here. `safe` keeps a tall result scrollable from the top. */
  #app {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: safe center;
    align-items: center;
  }
  /* Heavier top spacer drops the title below centre; fr, so short screens reclaim it. */
  .stage {
    flex: 1;
    min-height: 0; /* shrink to the locked viewport instead of overflowing it */
    display: grid;
    grid-template-rows: 1.75fr auto 1fr;
    justify-items: center;
  }
  .play-area {
    grid-row: 2;
    align-self: center;
  }
  /* Centred, so its slack splits above and below the options. */
  .widgets-bottom {
    grid-row: 3;
    align-self: center;
  }
  .play-area {
    gap: 1rem;
    margin-top: 0;
  }
  .sequence {
    flex-wrap: nowrap;
    gap: 0.25rem;
    width: 100%;
    /* Taller pills crowd the pattern label above. */
    margin-top: 0.6rem;
  }
  .sequence .note {
    flex: 1 1 0;
    min-width: 0;
    padding: 0.55rem 0.1rem;
    font-size: 1rem;
  }
  .widgets-bottom .layer {
    gap: 0.85rem;
  }
  .widget-row {
    gap: 0.5rem;
  }
}