:root {
  --ink: #0e0d0c;
  --ink-soft: #2a2724;
  --paper: #e8e2d8;
  --paper-deep: #d4cdc0;
  --line: #b8b0a4;
  --accent: #8b4518;
  --panel: #f3efe8;
  --muted: #6e675c;
  --focus: #1a1814;
  --radius: 2px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(255, 255, 255, 0.35), transparent 55%),
    linear-gradient(145deg, #ebe5db 0%, #d9d1c4 48%, #cfc6b6 100%);
  min-height: 100vh;
}

.app {
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  min-height: 100vh;
  min-height: 100dvh;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding:
    max(1rem, env(safe-area-inset-top, 0px))
    max(1rem, env(safe-area-inset-right, 0px))
    max(0.85rem, env(safe-area-inset-bottom, 0px))
    max(1.15rem, env(safe-area-inset-left, 0px));
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border-right: 1px solid var(--line);
  backdrop-filter: blur(8px);
  overflow-x: hidden;
  overflow-y: auto;
  max-height: 100vh;
  max-height: 100dvh;
  -webkit-overflow-scrolling: touch;
}

.brand-bar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand {
  min-width: 0;
}

.brand-mark {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.65rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--ink);
}

.brand-sub {
  margin: 0.25rem 0 0;
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.icon-btn {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  padding: 0;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition:
    background 200ms var(--ease),
    color 200ms var(--ease);
}

.icon-btn:hover {
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}

.params-toggle {
  display: grid;
}

.params-scrim {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(14, 13, 12, 0.35);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms var(--ease);
}

.params-scrim.is-open {
  opacity: 1;
  pointer-events: auto;
}

.params-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: min(92vw, 380px);
  height: 100dvh;
  max-height: 100dvh;
  margin: 0;
  padding:
    max(1rem, env(safe-area-inset-top, 0px))
    max(1rem, env(safe-area-inset-right, 0px))
    max(1.5rem, env(safe-area-inset-bottom, 0px))
    max(1rem, env(safe-area-inset-left, 0px));
  background: var(--panel);
  border-left: 1px solid var(--line);
  box-shadow: -18px 0 48px -24px rgba(40, 30, 20, 0.45);
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateX(105%);
  transition: transform 280ms var(--ease);
}

.params-drawer.is-open {
  transform: translateX(0);
}

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}

.drawer-title {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.35rem;
  font-style: italic;
  letter-spacing: -0.01em;
}

body.params-open {
  overflow: hidden;
}

.actions-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  align-items: stretch;
}

.switch {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  margin: 0;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
  user-select: none;
  background: transparent;
  position: relative;
}

.switch-label {
  font-size: 0.55rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  line-height: 1.2;
}

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

.switch-track {
  position: relative;
  flex-shrink: 0;
  width: 1.85rem;
  height: 1rem;
  border-radius: 1px;
  border: 1px solid var(--ink);
  background: transparent;
  transition: background 180ms var(--ease);
}

.switch-track::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 1px;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--ink);
  transition: transform 180ms var(--ease);
}

.switch input:checked + .switch-track {
  background: var(--ink);
}

.switch input:checked + .switch-track::after {
  background: var(--paper);
  transform: translateX(0.75rem);
}

.switch input:focus-visible + .switch-track {
  box-shadow: 0 0 0 2px var(--paper), 0 0 0 3px var(--ink);
}

section h2,
.circle-card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.global.mixer {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.circles {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.global h2,
.circles h2 {
  margin: 0;
}

.mixer-strip,
.control-grid {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.2rem;
  overflow-x: auto;
  padding: 0.45rem 0.35rem 0.55rem;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 11px,
      color-mix(in srgb, var(--line) 35%, transparent) 11px,
      color-mix(in srgb, var(--line) 35%, transparent) 12px
    ),
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--paper) 55%, transparent),
      color-mix(in srgb, var(--paper-deep) 40%, transparent)
    );
  border-radius: var(--radius);
}

.circle-card {
  padding: 0.45rem 0 0.5rem;
  border-top: 1px solid var(--line);
}

.circle-card:first-child {
  border-top: none;
  padding-top: 0;
}

.circle-card h3 {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.35rem;
  color: var(--ink-soft);
}

.circle-card h3 span {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 0.95rem;
  letter-spacing: 0;
  text-transform: none;
  font-style: italic;
}

.control {
  display: block;
  margin: 0;
  min-width: 0;
}

.control.fader {
  flex: 1 0 2.45rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.28rem;
  min-width: 2.35rem;
  max-width: 3rem;
}

.control-label {
  font-size: 0.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: center;
  line-height: 1.15;
  max-width: 100%;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.control-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  margin-bottom: 0.12rem;
  width: 100%;
}

.fader-slot {
  position: relative;
  width: 1.55rem;
  height: 7.4rem;
  display: grid;
  place-items: center;
  background:
    linear-gradient(90deg, transparent 42%, var(--line) 42%, var(--line) 58%, transparent 58%),
    color-mix(in srgb, var(--ink) 4%, var(--paper));
  border: 1px solid var(--line);
  border-radius: 1px;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--paper) 70%, transparent);
}

.fader-slot::before,
.fader-slot::after {
  content: "";
  position: absolute;
  left: 0.2rem;
  right: 0.2rem;
  height: 1px;
  background: color-mix(in srgb, var(--line) 70%, transparent);
  pointer-events: none;
}

.fader-slot::before {
  top: 25%;
}

.fader-slot::after {
  top: 50%;
}

.lock-cb {
  flex-shrink: 0;
  width: 0.8rem;
  height: 0.8rem;
  margin: 0;
  accent-color: var(--ink);
  cursor: pointer;
}

.lock-hint {
  margin: 0;
  font-size: 0.52rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.row {
  display: grid;
  grid-template-columns: 1fr 2.6rem;
  gap: 0.45rem;
  align-items: center;
  min-width: 0;
}

.row output,
.control.fader output {
  font-size: 0.55rem;
  text-align: center;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  min-height: 1em;
}

.row output {
  text-align: right;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2px;
  background: var(--line);
  border-radius: 1px;
  outline: none;
  cursor: pointer;
  accent-color: var(--ink);
  color: var(--ink);
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: var(--line);
  border-radius: 1px;
}

input[type="range"]::-moz-range-track {
  height: 2px;
  background: var(--line);
  border-radius: 1px;
  border: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--ink);
  border: 1.5px solid var(--paper);
  box-shadow: 0 0 0 1px var(--ink);
  transition: transform 160ms var(--ease);
}

input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 1.5px solid var(--paper);
  box-shadow: 0 0 0 1px var(--ink);
}

input[type="range"]::-moz-range-progress {
  background: var(--ink);
  height: 2px;
  border-radius: 1px;
}

input[type="range"]:hover::-webkit-slider-thumb,
input[type="range"]:focus-visible::-webkit-slider-thumb {
  transform: scale(1.12);
}

input[type="range"].fader-input {
  -webkit-appearance: slider-vertical;
  appearance: slider-vertical;
  writing-mode: vertical-lr;
  direction: rtl;
  width: 1.25rem;
  height: 6.9rem;
  padding: 0;
  margin: 0;
  background: transparent;
  accent-color: var(--ink);
  color: var(--ink);
}

input[type="range"].fader-input::-webkit-slider-runnable-track {
  width: 3px;
  background: var(--ink-soft);
  border-radius: 1px;
}

input[type="range"].fader-input::-moz-range-track {
  width: 3px;
  background: var(--ink-soft);
  border-radius: 1px;
}

input[type="range"].fader-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.15rem;
  height: 0.55rem;
  margin-left: -6px;
  margin-top: 0;
  border-radius: 1px;
  background: var(--ink);
  border: 1px solid var(--paper);
  box-shadow:
    0 0 0 1px var(--ink),
    0 1px 2px rgba(0, 0, 0, 0.25);
  transform: none;
}

input[type="range"].fader-input::-moz-range-thumb {
  width: 1.15rem;
  height: 0.55rem;
  border-radius: 1px;
  background: var(--ink);
  border: 1px solid var(--paper);
  box-shadow:
    0 0 0 1px var(--ink),
    0 1px 2px rgba(0, 0, 0, 0.25);
}

input[type="range"].fader-input:hover::-webkit-slider-thumb,
input[type="range"].fader-input:focus-visible::-webkit-slider-thumb {
  transform: none;
  background: var(--ink);
}

.meta-controls {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 0.15rem 0 0.25rem;
}

.meta-controls .control-label {
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.15rem;
  -webkit-line-clamp: unset;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  padding-bottom: 0.15rem;
}

.play-speed {
  margin: 0;
  padding-bottom: 0.1rem;
}

.play-speed .control-label {
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
  display: block;
  -webkit-line-clamp: unset;
}

.setups {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.setup-save {
  width: 100%;
}

.setup-list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.setup-item {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.3rem;
  align-items: center;
}

.setup-item .setup-name {
  margin: 0;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.setup-item .btn {
  padding: 0.45rem 0.55rem;
  font-size: 0.55rem;
}

.btn.playing {
  background: var(--ink);
  color: var(--paper);
}

.btn {
  font-family: inherit;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.65rem 0.7rem;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  cursor: pointer;
  transition:
    background 200ms var(--ease),
    color 200ms var(--ease),
    transform 200ms var(--ease);
}

.btn:active {
  transform: translateY(1px);
}

.btn.ghost {
  background: transparent;
  color: var(--ink);
}

.btn.ghost:hover {
  background: color-mix(in srgb, var(--ink) 6%, transparent);
}

.btn.primary {
  background: var(--ink);
  color: var(--paper);
}

.btn.primary:hover {
  background: var(--ink-soft);
}

.stage {
  display: grid;
  place-items: center;
  padding: 2.5rem;
  position: relative;
}

.preview-frame {
  width: min(72vmin, 520px);
  aspect-ratio: 1;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.55), transparent 45%),
    var(--paper);
  border: 1px solid var(--line);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.45) inset,
    0 28px 60px -28px rgba(40, 30, 20, 0.35);
  display: grid;
  place-items: center;
  animation: rise 700ms var(--ease) both;
  touch-action: none;
  cursor: crosshair;
}

#preview {
  width: 86%;
  height: 86%;
  overflow: visible;
}

#preview path {
  fill: none;
  stroke: var(--ink);
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.hint {
  position: absolute;
  bottom: 1.5rem;
  margin: 0;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.85;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 1100px) {
  .app {
    grid-template-columns: minmax(260px, 300px) 1fr;
  }

  .panel {
    padding-left: max(1.25rem, env(safe-area-inset-left, 0px));
    padding-right: max(1rem, env(safe-area-inset-right, 0px));
  }
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
  }

  .panel {
    border-right: none;
    border-bottom: 1px solid var(--line);
    max-height: none;
    overflow: visible;
    position: relative;
    z-index: 20;
    padding-left: max(1.25rem, env(safe-area-inset-left, 0px));
    padding-right: max(1.25rem, env(safe-area-inset-right, 0px));
  }

  .stage {
    min-height: 70vh;
    padding: 1.5rem 1.25rem 3.5rem;
    padding-left: max(1.25rem, env(safe-area-inset-left, 0px));
    padding-right: max(1.25rem, env(safe-area-inset-right, 0px));
  }

  .preview-frame {
    width: min(88vw, 420px);
  }

  .hint {
    bottom: 1rem;
  }
}