:root {
  color-scheme: dark;
  --bg: #101012;
  --device: #2f302d;
  --device-dark: #1f1f21;
  --device-face: #292a28;
  --screen: #030604;
  --screen-soft: #071108;
  --crt-green: #79f25d;
  --crt-green-dim: #347b31;
  --control-orange: #ef823e;
  --orange-dark: #a64e25;
  --text: #f4f1ea;
  --muted: #9c9f9e;
  --line: rgba(255, 255, 255, 0.14);
  --screen-line: rgba(121, 242, 93, 0.36);
  --shadow: rgba(0, 0, 0, 0.52);
  --rest: #4d5350;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, #151517 0, #0d0d0f 100%),
    var(--bg);
  color: var(--text);
  font-family: "Bahnschrift", "Segoe UI", sans-serif;
}

button,
input,
select {
  min-width: 0;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #151518;
  color: var(--text);
  font: inherit;
}

button {
  padding: 0 14px;
  cursor: pointer;
  font-weight: 800;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

input,
select {
  width: 100%;
  padding: 0 10px;
}

button:hover,
input:focus,
select:focus,
summary:focus-visible {
  border-color: var(--crt-green);
  outline: none;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
}

h2 {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 800;
  text-transform: uppercase;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.86rem;
}

summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 800;
  text-transform: uppercase;
}

.metronome-app {
  width: min(860px, calc(100% - 24px));
  min-height: calc(100vh - 48px);
  margin: 24px auto;
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.rhythm-shell {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background:
    linear-gradient(180deg, #353734 0, var(--device) 54%, #262625 100%);
  box-shadow:
    0 30px 80px var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    inset 0 -2px 0 rgba(0, 0, 0, 0.45);
}

.device-header {
  order: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 4px 8px 10px;
}

.brand-mark {
  display: grid;
  gap: 3px;
}

.brand-mark strong {
  color: var(--text);
  font-size: 1.48rem;
  font-style: italic;
  letter-spacing: 0;
}

.brand-mark strong::after {
  content: ".WEB";
  color: var(--control-orange);
}

.mode-switch {
  display: flex;
  min-width: 212px;
  border-radius: 8px;
  background: #171619;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.mode-switch span {
  flex: 1;
  min-height: 46px;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.mode-switch .is-active {
  background: linear-gradient(180deg, var(--control-orange), #c86631);
  color: #fff8f1;
}

.display-panel,
.control-panel,
.tool-grid,
.pattern-panel,
.polyrhythm-panel,
.practice-panel,
.preset-panel {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #1d1d20;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 12px 24px rgba(0, 0, 0, 0.22);
  padding: 16px;
}

.display-panel {
  order: 1;
  display: grid;
  gap: 12px;
  border-color: #070907;
  background:
    linear-gradient(rgba(121, 242, 93, 0.045) 1px, transparent 1px),
    var(--screen);
  background-size: 100% 5px;
  box-shadow:
    inset 0 0 0 2px #000,
    inset 0 0 24px rgba(121, 242, 93, 0.14),
    0 0 0 1px rgba(121, 242, 93, 0.2);
}

.topline {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(94px, 0.55fr) minmax(128px, 0.75fr);
  gap: 12px;
  align-items: end;
}

.label {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

#tempoReadout {
  display: block;
  color: var(--crt-green);
  font-size: 5.25rem;
  font-weight: 900;
  line-height: 0.9;
  text-shadow: 0 0 18px rgba(121, 242, 93, 0.4);
}

#meterReadout,
#subdivisionReadout {
  display: block;
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 1.35rem;
  font-weight: 800;
}

.beat-grid {
  --beat-count: 4;
  display: grid;
  grid-template-columns: repeat(var(--beat-count), minmax(34px, 1fr));
  align-items: end;
  gap: 8px;
  min-height: 142px;
  margin: 2px 0;
}

.beat {
  display: grid;
  place-items: end center;
  width: 100%;
  min-height: 76px;
  padding: 10px 4px;
  border-color: rgba(121, 242, 93, 0.24);
  background: #102112;
  color: var(--crt-green);
  font-weight: 900;
  text-shadow: 0 0 10px rgba(121, 242, 93, 0.28);
  transition:
    border-color 120ms ease,
    filter 120ms ease,
    transform 120ms ease;
}

.beat-accent {
  min-height: 138px;
  background: linear-gradient(180deg, #8aff65, #3b8b35);
  color: #061006;
}

.beat-secondary {
  min-height: 116px;
  background: linear-gradient(180deg, #c7ee57, #68892f);
  color: #081008;
}

.beat-normal {
  min-height: 94px;
  background: linear-gradient(180deg, #244f23, #143015);
}

.beat-rest {
  min-height: 76px;
  background: repeating-linear-gradient(
    135deg,
    var(--rest),
    var(--rest) 8px,
    #353a38 8px,
    #353a38 16px
  );
  color: #d1d6d2;
}

.beat.is-active {
  border-color: var(--control-orange);
  filter: brightness(1.28);
  transform: translateY(-6px);
}

.pendulum {
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--control-orange), transparent);
}

.status {
  min-height: 1.4em;
  color: var(--crt-green);
}

.pattern-panel {
  order: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  border-color: #070907;
  background:
    linear-gradient(rgba(121, 242, 93, 0.04) 1px, transparent 1px),
    var(--screen-soft);
  background-size: 100% 5px;
  box-shadow:
    inset 0 0 0 2px #000,
    inset 0 0 28px rgba(121, 242, 93, 0.12);
}

.pattern-panel h2,
.rhythm-library,
.library-action,
.chain-strip,
.pattern-details,
.pattern-panel > button {
  grid-column: 1 / -1;
}

.rhythm-library {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 10px;
  max-height: 324px;
  overflow: auto;
  padding: 10px;
  border: 1px solid rgba(121, 242, 93, 0.24);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.28);
  scrollbar-color: var(--crt-green-dim) transparent;
}

.rhythm-card {
  min-height: 112px;
  padding: 12px;
  display: grid;
  align-content: space-between;
  gap: 7px;
  border-color: rgba(121, 242, 93, 0.28);
  background:
    linear-gradient(180deg, rgba(121, 242, 93, 0.11), rgba(121, 242, 93, 0.035)),
    #071009;
  color: var(--crt-green);
  text-align: left;
}

.rhythm-card[aria-selected="true"] {
  border-color: var(--crt-green);
  background:
    linear-gradient(180deg, rgba(121, 242, 93, 0.22), rgba(121, 242, 93, 0.06)),
    #081309;
  box-shadow:
    inset 0 0 18px rgba(121, 242, 93, 0.2),
    0 0 14px rgba(121, 242, 93, 0.28);
}

.rhythm-signature {
  font-size: 1.72rem;
  line-height: 1;
}

.rhythm-name,
.rhythm-caption {
  overflow-wrap: anywhere;
}

.rhythm-name {
  color: var(--text);
  font-size: 0.84rem;
}

.rhythm-caption {
  color: rgba(186, 236, 177, 0.78);
  font-size: 0.72rem;
  font-weight: 700;
}

.library-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(150px, 0.34fr);
  gap: 10px;
  align-items: end;
}

#selectedRhythmName {
  display: block;
  min-height: 44px;
  padding: 11px 12px;
  border: 1px solid rgba(121, 242, 93, 0.2);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.32);
  color: var(--text);
  font-weight: 800;
}

#addSelectedRhythm,
.play-button {
  border-color: rgba(255, 255, 255, 0.22);
  background: linear-gradient(180deg, var(--control-orange), #c76530);
  color: #fff7ef;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    0 8px 18px rgba(0, 0, 0, 0.28);
}

.chain-strip {
  min-height: 48px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.28);
}

.chain-empty {
  align-self: center;
  color: rgba(186, 236, 177, 0.68);
  font-size: 0.84rem;
  font-weight: 800;
}

.chain-chip {
  flex: 0 0 auto;
  min-height: 34px;
  max-width: 210px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border-color: rgba(121, 242, 93, 0.25);
  background: #0d180f;
  color: var(--crt-green);
}

.chain-chip.is-active {
  border-color: var(--control-orange);
  color: #fff2e8;
  background: #2a1b13;
}

.pattern-details {
  display: grid;
  gap: 10px;
  padding: 10px;
  border: 1px solid rgba(121, 242, 93, 0.18);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.18);
}

.pattern-segments {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.pattern-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 8px;
  align-items: end;
  padding: 10px;
  border: 1px solid rgba(121, 242, 93, 0.18);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.22);
}

.pattern-remove {
  color: var(--muted);
}

.control-panel {
  order: 3;
  display: grid;
  gap: 12px;
}

.tempo-controls {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 58px;
  gap: 10px;
  align-items: end;
}

.tempo-controls button {
  font-size: 1.45rem;
}

.transport {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) repeat(3, minmax(88px, 0.55fr));
  gap: 10px;
}

#tapTempo,
#timerToggle,
#muteToggle,
.pattern-panel > button {
  background: linear-gradient(180deg, #55565a, #3d3d41);
  color: #f1f1f1;
}

#muteToggle[aria-pressed="true"] {
  background: linear-gradient(180deg, #f0c351, #b67d25);
  color: #1a1204;
}

.tool-grid {
  order: 4;
}

.polyrhythm-panel {
  order: 5;
}

.practice-panel {
  order: 6;
}

.preset-panel {
  order: 7;
}

.tool-grid,
.polyrhythm-panel,
.practice-panel,
.preset-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(146px, 1fr));
  gap: 10px;
  background: var(--device-dark);
}

.preset-panel {
  grid-template-columns: minmax(0, 1fr) 104px minmax(150px, 1fr);
  align-items: end;
}

input[type="checkbox"] {
  width: 44px;
  accent-color: var(--crt-green);
}

input[type="range"] {
  accent-color: var(--control-orange);
}

@media (min-width: 880px) {
  .tool-grid,
  .practice-panel {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .metronome-app {
    width: calc(100% - 16px);
    min-height: calc(100vh - 16px);
    margin: 8px auto;
    padding: 14px;
    gap: 12px;
  }

  .device-header,
  .library-action,
  .topline,
  .transport,
  .tempo-controls,
  .preset-panel {
    grid-template-columns: 1fr;
  }

  .device-header {
    display: grid;
  }

  .mode-switch {
    min-width: 0;
    width: 100%;
  }

  .display-panel,
  .control-panel,
  .tool-grid,
  .pattern-panel,
  .polyrhythm-panel,
  .practice-panel,
  .preset-panel {
    padding: 12px;
  }

  #tempoReadout {
    font-size: 4rem;
  }

  .beat-grid {
    gap: 6px;
    min-height: 122px;
  }

  .beat-accent {
    min-height: 112px;
  }

  .beat-secondary {
    min-height: 98px;
  }

  .beat-normal {
    min-height: 82px;
  }

  .rhythm-library {
    grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
    max-height: 270px;
  }
}

@media (orientation: landscape) and (max-height: 560px) {
  .metronome-app {
    width: min(1120px, calc(100% - 20px));
    min-height: auto;
    margin: 10px auto;
    grid-template-columns: minmax(320px, 0.95fr) minmax(360px, 1.05fr);
    align-items: start;
  }

  .device-header {
    grid-column: 1 / -1;
  }

  .display-panel {
    order: 1;
  }

  .pattern-panel {
    order: 2;
  }

  .control-panel,
  .tool-grid,
  .polyrhythm-panel,
  .practice-panel,
  .preset-panel {
    grid-column: 1 / -1;
  }

  #tempoReadout {
    font-size: 3.8rem;
  }

  .beat-grid {
    min-height: 104px;
  }
}