:root {
  --bg: #14161c;
  --card: #1c1f28;
  --accent: #5b8cff;
  --accent-2: #ff5b7f;
  --text: #f0f1f5;
  --text-dim: #8a8f9e;
  --track: #2a2e3a;
}

* { box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  background: var(--card);
  border-radius: 24px;
  padding: 32px 28px 40px;
  width: 100%;
  max-width: 380px;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
  user-select: none;
}

.card.wide {
  max-width: 520px;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
  width: 100%;
}

.nav-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--text);
}

.nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

h1 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 20px;
}

.beat-bar {
  border-radius: 999px;
  background: var(--track);
  transition: background-color 0.05s linear, transform 0.05s linear;
}

.beat-bar.on {
  background: var(--text);
  transform: scaleY(1.4);
}

.beat-bar-small {
  width: 64px;
  height: 6px;
  margin-top: 22px;
}

.dial-wrap {
  padding: 10px;
}

.dial {
  position: relative;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--card) 62%, transparent 63%),
    conic-gradient(var(--track) 0deg 360deg);
  touch-action: none;
  cursor: grab;
}

.dial:active {
  cursor: grabbing;
}

.dial-fill {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(var(--accent) calc(var(--pct, 0.33) * 360deg), transparent 0deg);
  -webkit-mask: radial-gradient(circle, transparent 62%, black 63%);
  mask: radial-gradient(circle, transparent 62%, black 63%);
  pointer-events: none;
}

.dial-knob {
  position: absolute;
  top: 6px;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  border-radius: 50%;
  background: var(--text);
  transform-origin: 7px 104px;
  transform: rotate(calc(var(--angle, 0deg)));
  pointer-events: none;
  box-shadow: 0 0 8px rgba(255,255,255,0.5);
}

.dial-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.bpm-input {
  pointer-events: auto;
  width: 110px;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 52px;
  font-weight: 700;
  text-align: center;
  -moz-appearance: textfield;
}

.bpm-input::-webkit-outer-spin-button,
.bpm-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.bpm-input:focus {
  outline: none;
  color: var(--accent);
}

.bpm-label {
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 0.15em;
  margin-top: -6px;
}

.controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 26px;
  flex-wrap: wrap;
}

.toggle-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.count-in-input {
  width: 48px;
  background: var(--track);
  border: none;
  border-radius: 8px;
  padding: 6px 4px;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  -moz-appearance: textfield;
}

.count-in-input::-webkit-outer-spin-button,
.count-in-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.count-in-input:focus {
  outline: 2px solid var(--accent);
}

.switch-label {
  font-size: 14px;
  color: var(--text-dim);
  font-weight: 600;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 26px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--track);
  border-radius: 999px;
  transition: background-color 0.15s ease;
}

.slider::before {
  content: "";
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  top: 3px;
  background: var(--text);
  border-radius: 50%;
  transition: transform 0.15s ease;
}

.switch input:checked + .slider {
  background: var(--accent);
}

.switch input:checked + .slider::before {
  transform: translateX(18px);
}

.play-pause {
  margin-top: 30px;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(91, 140, 255, 0.4);
}

.play-pause:active {
  transform: scale(0.96);
}

.play-pause.playing {
  background: var(--accent-2);
  box-shadow: 0 10px 30px rgba(255, 91, 127, 0.4);
}

/* ---------- Programming page ---------- */

.program-name-row {
  width: 100%;
  margin-bottom: 20px;
}

.program-name-label {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.program-name-input {
  display: block;
  width: 100%;
  background: var(--track);
  border: none;
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
}

.program-name-input:focus {
  outline: 2px solid var(--accent);
}

.mode-toggle {
  display: flex;
  width: 100%;
  background: var(--track);
  border-radius: 12px;
  padding: 4px;
  gap: 4px;
  margin-bottom: 24px;
}

.mode-btn {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 0;
  border-radius: 9px;
  cursor: pointer;
}

.mode-btn.active {
  background: var(--accent);
  color: white;
}

.sets-panel {
  width: 100%;
}

.sets-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.sets-header h2 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0;
}

.sets-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.small-btn {
  padding: 7px 14px;
  font-size: 13px;
}

.add-set-btn {
  background: var(--track);
  color: var(--text);
  border: none;
  border-radius: 10px;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.add-set-btn:hover {
  background: #333848;
}

.sets-list {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.set-card {
  flex: 0 0 auto;
  min-width: 100px;
  background: var(--track);
  border: 2px solid transparent;
  border-radius: 14px;
  padding: 12px 16px;
  cursor: pointer;
  text-align: center;
}

.set-card:hover {
  background: #333848;
}

.set-card.active-set {
  border-color: var(--accent);
}

.set-card .set-number {
  font-size: 20px;
  font-weight: 700;
}

.set-card .set-meta {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
  white-space: nowrap;
}

.empty-hint {
  color: var(--text-dim);
  font-size: 14px;
  padding: 20px 0;
  margin: 0;
}

.set-editor-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  align-items: center;
  justify-content: center;
  z-index: 10;
  padding: 20px;
}

.set-editor-backdrop.open {
  display: flex;
}

.set-editor {
  background: var(--card);
  border-radius: 20px;
  padding: 24px;
  width: 100%;
  max-width: 320px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.set-editor h3 {
  margin: 0 0 18px;
  font-size: 16px;
}

.set-editor label {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.set-editor input {
  display: block;
  width: 100%;
  margin-top: 6px;
  background: var(--track);
  border: none;
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 16px;
}

.set-editor input:focus {
  outline: 2px solid var(--accent);
}

.set-editor input:disabled {
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.03);
  cursor: not-allowed;
}

.tempo-change-btn {
  display: block;
  width: 100%;
  background: transparent;
  border: 1px dashed var(--track);
  border-radius: 10px;
  padding: 9px 12px;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  margin: -4px 0 16px;
}

.tempo-change-btn:hover {
  color: var(--text);
  border-color: var(--accent);
}

.tempo-change-btn.active {
  color: var(--accent);
  border-style: solid;
  border-color: var(--accent);
}

.tempo-change-fields {
  display: flex;
  gap: 10px;
  margin-bottom: 4px;
}

.tempo-change-fields label {
  flex: 1;
}

.editor-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 10px;
}

.primary-btn,
.ghost-btn,
.danger-btn {
  border: none;
  border-radius: 10px;
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.primary-btn {
  background: var(--accent);
  color: white;
}

.ghost-btn {
  background: var(--track);
  color: var(--text);
}

.danger-btn {
  background: transparent;
  color: var(--accent-2);
  margin-right: auto;
}

.playback-panel {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 8px;
}

.range-row {
  display: flex;
  gap: 16px;
  width: 100%;
  margin-bottom: 18px;
}

.range-row label {
  flex: 1;
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.range-row select {
  display: block;
  width: 100%;
  margin-top: 6px;
  background: var(--track);
  border: none;
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 15px;
}

.status-row {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 600;
  margin-top: 4px;
}

/* ---------- Small screens ---------- */

@media (max-width: 420px) {
  body {
    padding: 16px;
  }

  .card {
    padding: 24px 18px 32px;
  }

  .sets-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .sets-header-actions {
    width: 100%;
    justify-content: space-between;
  }
}