:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #000000;
  color: #f6f2e8;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
}

button {
  appearance: none;
  border: 0;
  color: inherit;
  cursor: pointer;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
}

svg {
  fill: none;
  height: 34px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.3;
  width: 34px;
}

.app {
  align-items: stretch;
  background: #000000;
  display: grid;
  grid-template-rows: minmax(96px, 20vh) minmax(178px, 1fr) minmax(84px, 20vh);
  height: 100%;
  overflow: hidden;
  padding: max(14px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(14px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  touch-action: manipulation;
  user-select: none;
}

.hud {
  align-items: flex-start;
  display: flex;
  justify-content: center;
  gap: 18px;
  min-width: 0;
  position: relative;
  z-index: 6;
}

.genreButton {
  background: transparent;
  display: grid;
  gap: 8px;
  justify-items: center;
  margin: 0 auto;
  max-width: 100%;
  padding: 0;
  text-align: center;
}

.genrePill {
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: #d5d8dc;
  display: inline-flex;
  gap: 10px;
  justify-content: center;
  min-height: 52px;
  min-width: 188px;
  padding: 8px 20px 9px;
}

.genrePill svg {
  height: 26px;
  width: 26px;
}

.genrePill span {
  color: #d5d8dc;
  font-size: clamp(1.65rem, 6.8vh, 3.4rem);
  font-weight: 720;
  letter-spacing: 0;
  line-height: 1;
  white-space: nowrap;
}

.genreButton small {
  color: #aeb6bf;
  display: block;
  font-size: clamp(0.9rem, 2.4vh, 1.15rem);
  font-weight: 650;
  letter-spacing: 0;
  margin-top: 10px;
}

.keyArrows button {
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  display: inline-flex;
  justify-content: center;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

.settingsButton {
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: #f8f4ea;
  display: inline-flex;
  gap: 10px;
  height: 52px;
  justify-content: center;
  margin-top: 6px;
  min-width: 188px;
  padding: 8px 20px 9px;
  transition: opacity 320ms ease, transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

.settingsButton svg {
  height: 26px;
  width: 26px;
}

.settingsButton span {
  font-size: clamp(1.2rem, 4vh, 1.8rem);
  font-weight: 820;
  letter-spacing: 0;
  line-height: 1;
}

.settingsButton.active,
.settingsButton:active {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.6);
  transform: scale(0.98);
}

.settingsPanel {
  background: rgba(0, 0, 0, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 28px;
  display: grid;
  gap: 12px;
  left: max(12px, env(safe-area-inset-left));
  overflow: hidden;
  opacity: 0;
  padding: 16px;
  pointer-events: none;
  position: fixed;
  right: max(12px, env(safe-area-inset-right));
  top: calc(max(14px, env(safe-area-inset-top)) + 72px);
  transform: translateY(110vh);
  transform-origin: bottom center;
  transition: opacity 220ms ease, transform 460ms cubic-bezier(0.2, 0.7, 0.1, 1);
  z-index: 7;
}

.settingsOpening .settingsPanel {
  opacity: 0;
  pointer-events: none;
  transform: translateY(110vh);
}

.settingsPanel.open {
  opacity: 1 !important;
  pointer-events: auto;
  transform: translateY(0) !important;
}

.settingsActive .genreButton {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

.settingsOpening .settingsStars,
.settingsOpening .settingItem {
  opacity: 0;
  visibility: hidden;
}

.settingsClose {
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
  color: #f8f4ea;
  display: inline-flex;
  height: 58px;
  justify-content: center;
  justify-self: center;
  left: 50%;
  opacity: 0;
  padding: 0;
  pointer-events: none;
  position: fixed;
  top: max(14px, env(safe-area-inset-top));
  transform: translateX(-50%);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  visibility: hidden;
  width: 58px;
  z-index: 8;
}

.settingsClose svg {
  height: 34px;
  width: 34px;
}

.settingsActive .settingsClose {
  opacity: 1 !important;
  pointer-events: auto;
  visibility: visible !important;
}

.settingItem {
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  display: flex;
  justify-content: space-between;
  min-height: 58px;
  padding: 12px 20px;
  position: relative;
  z-index: 1;
}

.settingItem.active {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.58);
}

.settingItem span {
  color: #c9d0d8;
  font-size: clamp(1.08rem, 3.4vh, 1.5rem);
  font-weight: 760;
}

.settingItem strong {
  color: #f8f4ea;
  font-size: clamp(1.15rem, 3.7vh, 1.65rem);
  font-weight: 820;
  letter-spacing: 0;
}

.settingsStars {
  inset: 0;
  pointer-events: none;
  position: absolute;
  transition: visibility 220ms ease;
  visibility: hidden;
  z-index: 0;
  -webkit-mask-image: radial-gradient(circle at center, transparent 0 22%, rgba(0, 0, 0, 0.45) 34%, #000000 56%, transparent 82%);
  mask-image: radial-gradient(circle at center, transparent 0 22%, rgba(0, 0, 0, 0.45) 34%, #000000 56%, transparent 82%);
}

.settingsPanel.open .settingsStars {
  visibility: visible;
}

.settingsStars span {
  animation: noteStarfield 4.8s linear infinite;
  animation-play-state: paused;
  color: rgba(234, 223, 156, 0.68);
  font-size: clamp(1.15rem, 4.6vh, 2rem);
  font-weight: 900;
  left: 50%;
  opacity: 0;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%) scale(0.1);
}

.settingsPanel.open .settingsStars span {
  animation-play-state: running;
}

.settingsStars span:nth-child(1) { --x: -46vw; --y: -22vh; animation-delay: -0.2s; }
.settingsStars span:nth-child(2) { --x: 42vw; --y: -25vh; animation-delay: -0.8s; color: rgba(180, 210, 240, 0.7); }
.settingsStars span:nth-child(3) { --x: -34vw; --y: 24vh; animation-delay: -1.4s; }
.settingsStars span:nth-child(4) { --x: 37vw; --y: 21vh; animation-delay: -2s; color: rgba(180, 210, 240, 0.7); }
.settingsStars span:nth-child(5) { --x: -18vw; --y: -31vh; animation-delay: -2.6s; }
.settingsStars span:nth-child(6) { --x: 20vw; --y: 30vh; animation-delay: -3.2s; }
.settingsStars span:nth-child(7) { --x: -50vw; --y: 5vh; animation-delay: -3.8s; color: rgba(180, 210, 240, 0.7); }
.settingsStars span:nth-child(8) { --x: 49vw; --y: -3vh; animation-delay: -4.4s; }
.settingsStars span:nth-child(9) { --x: -8vw; --y: 34vh; animation-delay: -1s; color: rgba(180, 210, 240, 0.7); }
.settingsStars span:nth-child(10) { --x: 9vw; --y: -35vh; animation-delay: -1.8s; }
.settingsStars span:nth-child(11) { --x: -39vw; --y: -12vh; animation-delay: -2.9s; }
.settingsStars span:nth-child(12) { --x: 33vw; --y: 13vh; animation-delay: -3.6s; color: rgba(180, 210, 240, 0.7); }

.keyArrows button:active {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.56);
  transform: scale(0.96);
}

.keyboardShell {
  align-items: center;
  contain: layout paint;
  display: flex;
  min-height: 0;
  position: relative;
  transition: opacity 900ms ease;
}

.keyboardViewport {
  height: min(50vh, 332px);
  margin: 0 auto;
  max-width: 760px;
  overflow: hidden;
  position: relative;
  width: 100%;
}

.keyboardViewport::before,
.keyboardViewport::after {
  content: "";
  inset-block: 0;
  pointer-events: none;
  position: absolute;
  width: 16%;
  z-index: 4;
}

.keyboardViewport::before {
  background: linear-gradient(90deg, #000000, rgba(0, 0, 0, 0));
  left: 0;
}

.keyboardViewport::after {
  background: linear-gradient(270deg, #000000, rgba(0, 0, 0, 0));
  right: 0;
}

.keyboard {
  contain: layout paint;
  display: grid;
  gap: clamp(9px, 2vh, 16px);
  grid-template-rows: 1fr 1fr;
  height: 100%;
  left: 0;
  margin-left: 0;
  max-width: none;
  position: absolute;
  top: 0;
  transform: translate3d(0, 0, 0);
  width: 230%;
  will-change: transform;
}

.staticKeys .keyboard {
  width: 100%;
}

.handsRight .keyboard,
.handsLeft .keyboard {
  grid-template-rows: 1fr;
}

.handsRight .leftRow,
.handsLeft .rightRow {
  display: none;
}

.keyboardRow {
  min-height: 0;
  position: relative;
  transition: opacity 220ms ease, transform 220ms ease;
  transform-origin: center center;
  transform-style: preserve-3d;
}

.genreRolling .rightRow .whiteKey,
.genreRolling .rightRow .blackKey {
  animation: keyDnaFlip 620ms cubic-bezier(0.2, 0.7, 0.1, 1) var(--flip-delay, 0ms) both;
}

.genreRolling .leftRow .whiteKey,
.genreRolling .leftRow .blackKey {
  animation: keyDnaFlip 620ms cubic-bezier(0.2, 0.7, 0.1, 1) calc(180ms + var(--flip-delay, 0ms)) both;
}

.settingsActive .rightRow {
  animation: none;
  opacity: 0;
  transform: translateX(128%) rotateZ(2deg);
}

.settingsActive .leftRow {
  animation: none;
  opacity: 0;
  transform: translateX(-128%) rotateZ(-2deg);
}

.rowsEntering .rightRow {
  animation: slideInRight 620ms cubic-bezier(0.2, 0.7, 0.1, 1) both;
}

.rowsEntering .leftRow {
  animation: slideInLeft 620ms cubic-bezier(0.2, 0.7, 0.1, 1) 120ms both;
}

.whiteKeys {
  display: grid;
  gap: clamp(3px, 0.7vw, 7px);
  grid-template-columns: repeat(21, minmax(0, 1fr));
  height: 100%;
  position: relative;
  z-index: 1;
}

.whiteKey {
  background: #000000;
  border: clamp(2px, 0.45vw, 4px) solid #ffffff;
  border-radius: 0 0 8px 8px;
  min-width: 0;
  position: relative;
}

.whiteKey.rightHand {
  background: #eadf9c;
  border-color: #eadf9c;
}

.whiteKey.leftHand {
  background: #244866;
  border-color: #386b95;
}

.whiteKey.middleC {
  border-color: #a33a36;
  background-image: linear-gradient(rgba(163, 58, 54, 0.14), rgba(163, 58, 54, 0.14));
}

.whiteKey.middleC::before {
  color: #ff5a52;
  content: "c";
  font-size: clamp(0.62rem, 1.8vh, 0.88rem);
  font-weight: 950;
  left: 50%;
  letter-spacing: 0;
  position: absolute;
  text-transform: lowercase;
  top: 18%;
  transform: translate(-50%, -50%);
  z-index: 4;
}

.blackKeys {
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 2;
}

.blackKey {
  background: #000000;
  border: clamp(2px, 0.45vw, 4px) solid #ffffff;
  border-radius: 0 0 8px 8px;
  height: 60%;
  position: absolute;
  top: 0;
  width: clamp(18px, 4.2vw, 44px);
}

.blackKey.rightHand {
  background: #eadf9c;
  border-color: #eadf9c;
}

.blackKey.leftHand {
  background: #244866;
  border-color: #386b95;
}

.whiteKey.rightHand.active,
.blackKey.rightHand.active {
  transform: none;
}

.whiteKey.leftHand.active,
.blackKey.leftHand.active {
  transform: none;
}

.whiteKey.selected::after,
.blackKey.selected::after {
  content: attr(data-note);
  font-size: clamp(0.56rem, 2vh, 0.92rem);
  font-weight: 900;
  left: 50%;
  letter-spacing: 0;
  line-height: 1;
  position: absolute;
  text-transform: uppercase;
  top: 72%;
  transform: translate(-50%, -50%);
  z-index: 3;
}

.whiteKey.rightHand::after,
.blackKey.rightHand::after {
  color: #121212;
}

.whiteKey.leftHand::after,
.blackKey.leftHand::after {
  color: #f0f7ff;
}

.blackKey.selected::after {
  top: 58%;
}

.whiteKey.preview,
.blackKey.preview {
  transform: none;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(18%);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-18%);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes keyDnaFlip {
  0% {
    opacity: 1;
    transform: perspective(720px) rotateX(0deg) rotateY(0deg) translateY(0) scale(1);
  }

  42% {
    opacity: 0.35;
    transform: perspective(720px) rotateX(78deg) rotateY(16deg) translateY(-8%) scale(0.96);
  }

  66% {
    opacity: 1;
    transform: perspective(720px) rotateX(-9deg) rotateY(-5deg) translateY(4%) scale(1.035);
  }

  82% {
    transform: perspective(720px) rotateX(5deg) rotateY(4deg) translateY(-2%) scale(0.985);
  }

  100% {
    opacity: 1;
    transform: perspective(720px) rotateX(0deg) rotateY(0deg) translateY(0) scale(1);
  }
}

@keyframes noteStarfield {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.08);
  }

  18% {
    opacity: 0.82;
  }

  72% {
    opacity: 0.62;
  }

  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--x)), calc(-50% + var(--y))) scale(2.25);
  }
}

.chordNav {
  align-items: center;
  display: grid;
  justify-content: center;
  margin: auto;
  max-width: 540px;
  width: 100%;
}

.keyArrows {
  align-items: center;
  display: flex;
  justify-content: space-between;
  left: 0;
  pointer-events: none;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
}

.keyArrows button {
  border-radius: 50%;
  height: 58px;
  pointer-events: auto;
  width: 58px;
}

.settingsActive .keyArrows,
.settingsActive .chordReadout,
.settingsActive .chordNav {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

.chordReadout {
  align-items: center;
  display: grid;
  justify-items: center;
  left: 50%;
  min-width: 0;
  pointer-events: none;
  position: absolute;
  row-gap: 4px;
  text-align: center;
  top: 50%;
  transform: translate(-50%, -50%);
  transition: opacity 600ms ease, transform 600ms ease;
  width: min(78vw, 540px);
  z-index: 6;
}

.chordReadout strong {
  color: rgba(248, 244, 234, 0.96);
  display: block;
  font-size: clamp(2.4rem, 9vh, 5.2rem);
  font-weight: 820;
  letter-spacing: 0;
  line-height: 0.9;
  overflow-wrap: anywhere;
  text-transform: capitalize;
  transform-origin: center center;
}

.chordReadout strong.titleBounce {
  animation: titleBounceIn 520ms cubic-bezier(0.2, 0.8, 0.18, 1) both;
}

.chordReadout span {
  display: none;
}

@keyframes titleBounceIn {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.82);
  }

  58% {
    opacity: 1;
    transform: translateY(-5px) scale(1.08);
  }

  78% {
    transform: translateY(2px) scale(0.98);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.chordNav button,
.keyArrows button {
  transition: opacity 600ms ease, transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

.hud {
  transition: opacity 600ms ease, transform 600ms ease;
}

.uiIdle .hud,
.uiIdle .chordNav,
.uiIdle .keyArrows {
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
}

.uiIdle .chordReadout {
  opacity: 0;
  transform: translate(-50%, calc(-50% + 6px));
}

.settingsActive.uiIdle .hud {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}

.keyboardDim .keyboardShell {
  opacity: 0.34;
}

.firstLaunchHints .keyArrows button,
.firstLaunchHints .genrePill,
.firstLaunchHints .settingsButton {
  animation: hintPulse 1.35s ease-in-out infinite;
  border-color: rgba(234, 223, 156, 0.68);
}

.firstLaunchHints .settingsButton {
  animation-delay: 0.24s;
}

.firstLaunchHints .genrePill {
  animation-delay: 0.48s;
}

@keyframes hintPulse {
  0%,
  100% {
    opacity: 0.66;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.07);
  }
}

@media (max-height: 430px) {
  .app {
    grid-template-rows: 76px minmax(128px, 1fr) 68px;
    padding: 10px 12px;
  }

  .genreButton span {
    font-size: clamp(2rem, 12vh, 3.5rem);
  }

  .genreButton small {
    margin-top: 7px;
  }

  .settingsButton {
    height: 42px;
    min-width: 148px;
    padding: 7px 16px;
  }

  .keyArrows button {
    flex-basis: 52px;
    height: 52px;
    width: 52px;
  }

  .keyboardViewport {
    height: min(46vh, 210px);
  }

}