:root {
  color-scheme: dark;
  --bg: #0d0f0e;
  --panel: #151817;
  --panel-hi: #1b1e1c;
  --line: #30342f;
  --line-soft: #242824;
  --text: #ece9df;
  --muted: #979b91;
  --accent: #c69a52;
  --accent-hi: #e4bd78;
  --danger: #d47a69;
  --radius: 8px;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-width: 300px;
  background:
    radial-gradient(circle at 84% -10%, rgba(198,154,82,.10), transparent 28rem),
    var(--bg);
  color: var(--text);
  font: 14px/1.4 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, select { font: inherit; }
button, select, input[type="number"], input[type="text"] {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #111412;
  color: var(--text);
}
button {
  min-height: 34px;
  padding: 6px 11px;
  cursor: pointer;
  transition: border-color .15s, background .15s, color .15s;
}
button:hover:not(:disabled) { border-color: #666d62; background: #1c201d; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:disabled { opacity: .42; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: #17120b; font-weight: 750; }
button.primary:hover:not(:disabled) { background: var(--accent-hi); border-color: var(--accent-hi); }
.app { width: min(1420px, 100%); margin: 0 auto; padding: 16px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
h1, h2, p { margin: 0; }
h1 { font-size: clamp(24px, 3vw, 36px); letter-spacing: -.04em; line-height: 1; }
.topbar p { color: var(--accent-hi); margin-top: 4px; letter-spacing: .08em; text-transform: uppercase; font-size: 10px; }
h2 { font-size: 15px; letter-spacing: .02em; }
.transport { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: rgba(21,24,23,.93); }
.master-panel { padding: 12px; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.preset-row { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 5px; }
.preset-row button { min-height: 27px; padding: 3px 8px; color: var(--muted); font-size: 12px; }
.master-grid { display: grid; grid-template-columns: repeat(5, minmax(150px, 1fr)); gap: 10px 12px; }
label { display: grid; gap: 5px; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .055em; min-width: 0; }
label > span { display: grid; grid-template-columns: minmax(80px, 1fr) 48px; align-items: center; gap: 6px; }
output { color: var(--text); text-align: right; font-variant-numeric: tabular-nums; text-transform: none; letter-spacing: 0; }
select, input[type="number"], input[type="text"] { width: 100%; min-height: 32px; padding: 5px 7px; }
input[type="range"] { width: 100%; margin: 0; accent-color: var(--accent); }
.monitor { margin-top: 12px; padding: 8px 10px 7px; overflow: hidden; }
#waveform { display: block; width: 100%; height: 92px; border-radius: 4px; background: #0b0d0c; }
.status-line { display: flex; justify-content: space-between; gap: 12px; padding-top: 6px; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
#status { color: var(--accent-hi); }
.bells-heading { display: flex; justify-content: space-between; align-items: end; gap: 16px; margin: 20px 0 9px; }
.bells-heading h2 { font-size: 19px; }
.bells-heading h2 span { color: var(--muted); font-weight: 400; }
.bells-heading p { margin-top: 3px; color: var(--muted); font-size: 12px; }
button.add { border-color: #75603c; color: var(--accent-hi); }
.bells { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.bell-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.bell-card-head { display: grid; grid-template-columns: 25px minmax(120px, 1fr) auto auto; align-items: center; gap: 8px; padding: 8px 10px; border-bottom: 1px solid var(--line-soft); background: var(--panel-hi); }
.bell-index { display: grid; place-items: center; width: 24px; height: 24px; border: 1px solid #665536; border-radius: 50%; color: var(--accent-hi); font-size: 11px; }
.bell-name { min-height: 29px !important; border-color: transparent !important; background: transparent !important; padding: 3px 4px !important; font-weight: 700; }
.bell-pitch { color: var(--accent-hi); font-size: 12px; font-variant-numeric: tabular-nums; }
.remove-bell { min-height: 27px; padding: 2px 7px; color: var(--danger); border-color: transparent; background: transparent; }
.bell-grid { display: grid; grid-template-columns: repeat(6, minmax(78px, 1fr)); gap: 10px; padding: 10px; }
.bell-grid > label { grid-column: span 2; }
.bell-grid .wide { grid-column: span 3; }
.bell-grid .note-pair { display: grid; grid-template-columns: 1fr 52px; gap: 5px; }
.advanced { border-top: 1px solid var(--line-soft); }
.advanced summary { padding: 7px 10px; cursor: pointer; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; user-select: none; }
.advanced summary:hover { color: var(--text); }
.advanced .advanced-grid { display: grid; grid-template-columns: repeat(4, minmax(100px, 1fr)); gap: 10px; padding: 2px 10px 11px; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 18px 3px 8px; color: #73786f; font-size: 11px; }
.text-button { min-height: 0; padding: 0; border: 0; background: transparent; color: inherit; text-decoration: underline; text-underline-offset: 3px; }
.text-button:hover:not(:disabled) { border: 0; background: transparent; color: var(--text); }
[hidden] { display: none !important; }
@media (max-width: 1080px) {
  .master-grid { grid-template-columns: repeat(3, minmax(145px, 1fr)); }
  .bells { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .app { padding: 10px 7px; }
  .topbar, .section-head, .bells-heading { align-items: stretch; flex-direction: column; }
  .transport, .preset-row { justify-content: stretch; display: grid; grid-template-columns: repeat(3, 1fr); }
  .preset-row { grid-template-columns: repeat(2, 1fr); }
  .transport button, .preset-row button { padding-inline: 5px; }
  .master-grid { grid-template-columns: repeat(2, minmax(125px, 1fr)); }
  .bell-grid { grid-template-columns: repeat(2, minmax(100px, 1fr)); }
  .bell-grid > label { grid-column: span 1; }
  .bell-grid .wide { grid-column: span 2; }
  .advanced .advanced-grid { grid-template-columns: repeat(2, minmax(100px, 1fr)); }
  #waveform { height: 74px; }
  .status-line, footer { flex-direction: column; gap: 4px; }
}
@media (max-width: 390px) {
  .master-grid { grid-template-columns: 1fr; }
  .bell-card-head { grid-template-columns: 24px 1fr auto; }
  .bell-pitch { grid-column: 2; }
  .remove-bell { grid-column: 3; grid-row: 1 / span 2; }
}