:root {
  color-scheme: light;
  --app-height: 100dvh;
  --bg: #f7f7f2;
  --panel: rgba(255, 255, 255, 0.82);
  --ink: #161616;
  --muted: #6a6f76;
  --line: #d9ddd5;
  --accent: #ff5a3d;
  --accent-2: #1f8a70;
  --good: #1f8a70;
  --warn: #e4a11b;
  --bad: #e24b3b;
  --feedback: transparent;
  --shadow: 0 28px 80px rgba(24, 28, 32, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: var(--app-height);
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(255, 90, 61, 0.09), transparent 34%),
    linear-gradient(315deg, rgba(31, 138, 112, 0.12), transparent 38%),
    var(--bg);
}

body::before,
body::after {
  position: fixed;
  z-index: 0;
  width: min(28vw, 170px);
  height: min(28vw, 170px);
  border-color: var(--feedback);
  border-style: solid;
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, border-color 160ms ease, transform 160ms ease;
}

body::before {
  top: 14px;
  left: 14px;
  border-width: 5px 0 0 5px;
  border-radius: 28px 0 0 0;
}

body::after {
  right: 14px;
  bottom: 14px;
  border-width: 0 5px 5px 0;
  border-radius: 0 0 28px 0;
}

body.timing-good {
  --feedback: var(--good);
}

body.timing-warn {
  --feedback: var(--warn);
}

body.timing-bad {
  --feedback: var(--bad);
}

body.timing-good::before,
body.timing-good::after,
body.timing-warn::before,
body.timing-warn::after,
body.timing-bad::before,
body.timing-bad::after {
  opacity: 1;
  transform: scale(1.02);
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.app-shell {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: var(--app-height);
  place-items: center;
  padding: 24px;
}

.metronome-panel {
  position: relative;
  width: min(100%, 520px);
  padding: 28px;
  border: 2px solid color-mix(in srgb, var(--feedback) 36%, rgba(255, 255, 255, 0.72));
  border-radius: 28px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

body.timing-good .metronome-panel,
body.timing-warn .metronome-panel,
body.timing-bad .metronome-panel {
  box-shadow: var(--shadow), 0 0 0 8px color-mix(in srgb, var(--feedback) 12%, transparent);
}

.workbench {
  display: grid;
}

.tempo-zone,
.controls-zone {
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent-2);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.4rem);
  line-height: 0.95;
}

.status-pill {
  min-width: 74px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
  text-align: center;
  white-space: nowrap;
}

.tempo-stage {
  display: grid;
  grid-template-columns: 54px 1fr 54px;
  align-items: center;
  gap: 16px;
  margin-top: 32px;
}

.icon-button {
  display: grid;
  width: 54px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #ffffff;
  color: var(--ink);
  font-size: 2rem;
  font-weight: 600;
  transition: transform 160ms ease, border-color 160ms ease;
}

.icon-button:hover {
  border-color: rgba(255, 90, 61, 0.45);
  transform: translateY(-1px);
}

.tempo-display {
  display: grid;
  justify-items: center;
  gap: 8px;
}

.pulse-ring {
  position: relative;
  display: grid;
  width: min(58vw, 230px);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.95) 0 48%, transparent 49%),
    conic-gradient(from 0deg, rgba(255, 90, 61, 0.18), rgba(31, 138, 112, 0.18), rgba(255, 90, 61, 0.18));
  transition: transform 80ms ease, box-shadow 80ms ease;
}

.pulse-ring.is-hit {
  box-shadow: 0 0 0 10px rgba(255, 90, 61, 0.1);
  transform: scale(1.025);
}

.pendulum {
  position: absolute;
  inset: 20px;
  display: grid;
  place-items: center;
}

.pendulum-arm {
  position: absolute;
  bottom: 50%;
  width: 4px;
  height: 78px;
  border-radius: 999px;
  background: var(--ink);
  transform-origin: bottom center;
  transform: rotate(-22deg);
  transition: transform 110ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.pendulum-dot {
  position: absolute;
  top: 42px;
  width: 18px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
  transform: translateX(-31px);
  transition: transform 110ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tempo-display label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
}

#tempoInput {
  width: min(100%, 240px);
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: clamp(3.6rem, 17vw, 6rem);
  font-weight: 800;
  line-height: 1;
  text-align: center;
}

#tempoInput:focus {
  outline: none;
}

.tempo-slider {
  width: 100%;
  margin: 26px 0 22px;
  accent-color: var(--accent);
}

.primary-controls {
  display: grid;
  grid-template-columns: 1fr 1.45fr;
  gap: 12px;
}

.tap-button,
.play-button {
  min-height: 58px;
  border-radius: 18px;
  font-weight: 800;
}

.tap-button {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink);
}

.play-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--ink);
  color: #ffffff;
  box-shadow: 0 14px 32px rgba(22, 22, 22, 0.22);
}

.play-button.is-playing {
  background: var(--accent);
}

.controls-zone {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.control-card {
  display: grid;
  min-height: 78px;
  gap: 9px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.68);
}

.control-card span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
}

.control-card select,
.control-card input[type="range"] {
  width: 100%;
  min-width: 0;
}

.control-card select {
  border: 0;
  background: transparent;
  color: var(--ink);
  font-weight: 800;
  outline: none;
}

.switch-card {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.switch-card input {
  width: 46px;
  height: 24px;
  accent-color: var(--accent-2);
}

.mic-card {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.mic-button {
  min-width: 86px;
  min-height: 38px;
  border-radius: 13px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 800;
}

.mic-button.is-listening {
  background: var(--accent-2);
}

.control-card output {
  float: right;
  color: var(--ink);
  font-weight: 800;
}

.score-card {
  align-content: center;
}

.score-card strong {
  font-size: 1.45rem;
  line-height: 1;
}

.score-card small {
  color: var(--muted);
  font-weight: 800;
}

.calibration-card {
  grid-column: 1 / -1;
  grid-template-columns: 1fr auto;
  align-items: center;
}

.calibration-card > div:first-child {
  display: grid;
  gap: 7px;
}

.calibration-card strong {
  font-size: 1.05rem;
  line-height: 1;
}

.calibration-button {
  min-width: 96px;
  min-height: 40px;
  border-radius: 13px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 800;
}

.calibration-button.is-active {
  background: var(--accent);
}

.calibration-lane {
  position: relative;
  grid-column: 1 / -1;
  height: 64px;
  margin-top: 2px;
  overflow: hidden;
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(31, 138, 112, 0.07), rgba(255, 90, 61, 0.06)),
    rgba(255, 255, 255, 0.7);
}

.calibration-ball {
  position: absolute;
  left: calc(var(--ball-x, 0.5) * 100%);
  bottom: calc(var(--ball-y, 0.82) * 42px + 10px);
  width: 18px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 8px 18px rgba(255, 90, 61, 0.28);
  transform: translateX(-50%);
}

.calibration-target {
  position: absolute;
  right: 12px;
  bottom: 10px;
  left: 12px;
  height: 4px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ink) 72%, transparent);
}

body.calibrating .calibration-lane {
  outline: 2px solid rgba(255, 90, 61, 0.16);
}

.celebration {
  position: absolute;
  right: 24px;
  bottom: 20px;
  max-width: min(300px, calc(100% - 48px));
  padding: 12px 14px;
  border: 1px solid rgba(31, 138, 112, 0.24);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  font-weight: 800;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.celebration.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.beat-row {
  display: grid;
  grid-template-columns: repeat(var(--beats, 4), 1fr);
  gap: 8px;
  margin-top: 20px;
}

.beat-dot {
  height: 9px;
  border-radius: 999px;
  background: #d7dcd4;
  transition: background-color 90ms ease, transform 90ms ease;
}

.beat-dot.is-active {
  background: var(--accent);
  transform: scaleY(1.6);
}

.beat-dot.is-accent {
  background: var(--accent-2);
}

@media (min-width: 880px) and (min-height: 620px) {
  .app-shell {
    padding: 36px;
  }

  .metronome-panel {
    width: min(100%, 980px);
    padding: 34px;
  }

  .topbar {
    align-items: center;
  }

  h1 {
    font-size: clamp(3.4rem, 5.6vw, 5rem);
  }

  .workbench {
    grid-template-columns: minmax(430px, 1fr) minmax(360px, 0.86fr);
    align-items: center;
    gap: 28px;
    margin-top: 26px;
  }

  .tempo-stage {
    grid-template-columns: 58px minmax(270px, 1fr) 58px;
    margin-top: 0;
  }

  .pulse-ring {
    width: min(28vw, 300px);
  }

  #tempoInput {
    font-size: clamp(5.8rem, 9vw, 8.8rem);
  }

  .tempo-slider {
    margin: 20px 0 18px;
  }

  .controls-zone {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-content: center;
    margin-top: 0;
  }

  .control-card {
    min-height: 82px;
    padding: 14px;
  }

  .calibration-card {
    min-height: 120px;
  }

  .beat-row {
    margin-top: 18px;
  }
}

@media (orientation: landscape) and (max-height: 620px) {
  .app-shell {
    align-items: start;
    padding: 8px;
  }

  .metronome-panel {
    width: min(100%, 980px);
    padding: 12px 16px;
    border-radius: 20px;
  }

  .topbar {
    align-items: center;
  }

  .eyebrow {
    margin-bottom: 2px;
    font-size: 0.66rem;
  }

  h1 {
    font-size: clamp(1.85rem, 3.6vw, 2.35rem);
    line-height: 0.92;
  }

  .status-pill {
    padding: 7px 10px;
    font-size: 0.78rem;
  }

  .workbench {
    grid-template-columns: minmax(390px, 1fr) minmax(240px, 0.62fr);
    align-items: center;
    gap: 16px;
    margin-top: 6px;
  }

  .tempo-stage {
    grid-template-columns: 44px minmax(240px, 1fr) 44px;
    gap: 10px;
    margin-top: 0;
  }

  .icon-button {
    width: 44px;
    border-radius: 14px;
    font-size: 1.6rem;
  }

  .pulse-ring {
    width: min(28vh, 148px);
  }

  .pendulum-arm {
    height: 46px;
  }

  .pendulum-dot {
    top: 25px;
    width: 14px;
  }

  .tempo-display {
    gap: 3px;
  }

  #tempoInput {
    font-size: clamp(3rem, 9vw, 4.45rem);
  }

  .tempo-slider {
    margin: 7px 0 9px;
  }

  .primary-controls {
    grid-template-columns: 0.85fr 1.25fr;
  }

  .tap-button,
  .play-button {
    min-height: 42px;
    border-radius: 15px;
  }

  .controls-zone {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 0;
  }

  .control-card {
    min-height: 58px;
    padding: 10px;
    border-radius: 15px;
  }

  .control-card span {
    font-size: 0.76rem;
  }

  .mic-card {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .mic-button {
    width: 100%;
    min-width: 0;
    min-height: 32px;
    border-radius: 11px;
    font-size: 0.9rem;
  }

  .calibration-card {
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto;
    min-height: 72px;
  }

  .calibration-lane {
    height: 38px;
  }

  .calibration-ball {
    bottom: calc(var(--ball-y, 0.82) * 18px + 8px);
    width: 14px;
  }

  .score-card strong {
    font-size: 1.15rem;
  }

  .celebration {
    right: 16px;
    bottom: 12px;
    padding: 9px 11px;
    font-size: 0.86rem;
  }

  .beat-row {
    margin-top: 8px;
  }

  .beat-dot {
    height: 7px;
  }
}

@media (max-width: 520px) {
  .app-shell {
    padding: 12px;
  }

  .metronome-panel {
    padding: 20px;
    border-radius: 22px;
  }

  .tempo-stage {
    grid-template-columns: 46px 1fr 46px;
    gap: 10px;
  }

  .icon-button {
    width: 46px;
    border-radius: 15px;
  }

  .primary-controls,
  .controls-zone {
    grid-template-columns: 1fr;
  }

  .celebration {
    position: sticky;
    bottom: 12px;
    margin-top: 14px;
    max-width: 100%;
  }
}

@media (max-width: 380px) {
  .topbar {
    align-items: center;
  }

  h1 {
    font-size: 2rem;
  }

  .status-pill {
    min-width: 64px;
    padding: 8px 10px;
  }

  .pulse-ring {
    width: min(56vw, 190px);
  }

  #tempoInput {
    font-size: 3.8rem;
  }
}