/* Base + desktop layout. Phone overrides live in mobile.css. */
:root {
  --bg: #16181d;
  --panel: #1f232b;
  --panel-2: #262b35;
  --border: #343a46;
  --text: #e8eaf0;
  --text-dim: #9aa3b2;
  --accent: #ffb454;
  --cell: #2b313d;
  --cell-hover: #353d4c;
  --playhead: #ffd27a;
  /* grid geometry — js/ui/grid.js sets --cell-w and reads the gaps */
  --cell-w: 88px;
  --cell-h: 58px;
  --cell-gap: 8px;
  --bar-gap: 14px;
  --num-h: 18px;
  --hit-pad: 6px;
  --hit-w: 7px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  background: radial-gradient(1200px 600px at 50% -10%, #232936, var(--bg));
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 48px;
  user-select: none;
  -webkit-user-select: none;
}
h1 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
h1 .dot { color: var(--accent); }
.subtitle { color: var(--text-dim); font-size: 12px; margin-bottom: 20px; }

/* Phone-only pieces stay out of the desktop layout entirely. */
.m-only, .hint-touch, .bar-nav { display: none; }
/* Wrappers that only exist to give the phone layout a box. */
.slot-families { display: contents; }

button, select, .cell { touch-action: manipulation; }

/* ---------- Transport bar ---------- */
.transport {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 18px;
  margin-bottom: 18px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.transport .group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.transport label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; }

button {
  font: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 8px 14px;
  cursor: pointer;
  transition: background .12s, border-color .12s, transform .05s;
}
@media (hover: hover) {
  button:hover { background: var(--cell-hover); }
}
button:active { transform: scale(0.97); }
button:disabled, select:disabled { opacity: 0.4; cursor: not-allowed; }
@media (hover: hover) {
  button:disabled:hover { background: var(--panel-2); }
}

#playBtn {
  width: 92px;
  font-weight: 700;
  background: linear-gradient(180deg, #3a9d5d, #2e7d4a);
  border-color: #2b6e42;
}
@media (hover: hover) {
  #playBtn:hover { filter: brightness(1.1); }
}
#playBtn.playing {
  background: linear-gradient(180deg, #c8503e, #a63c2d);
  border-color: #8f3324;
}

select {
  font: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 7px 10px;
  cursor: pointer;
}
select:focus, button:focus { outline: 2px solid rgba(255,180,84,0.4); outline-offset: 1px; }

input[type="range"] {
  -webkit-appearance: none;
  width: 140px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #1a1c22;
  box-shadow: 0 1px 4px rgba(0,0,0,0.5);
}
input[type="range"]::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #1a1c22;
}
#bpmVal { font-variant-numeric: tabular-nums; min-width: 68px; font-weight: 600; }

/* ---------- Beat bar: what's in the editor + save actions ---------- */
.beat-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  width: min(860px, 100%);
  margin: -4px 0 16px;
  padding: 8px 10px 8px 14px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.beat-bar.kind-preset { background: rgba(255,180,84,0.08); border-color: rgba(255,180,84,0.35); }
.beat-bar.kind-beat { background: rgba(90,200,232,0.07); border-color: rgba(90,200,232,0.35); }
.bb-info { display: flex; align-items: baseline; gap: 8px; flex: 1 1 360px; min-width: 0; }
.bb-tag, .bb-edited {
  flex: none;
  padding: 1px 7px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border-radius: 6px;
}
.bb-tag { color: var(--text-dim); background: var(--panel-2); }
.kind-preset .bb-tag { color: var(--accent); background: rgba(255,180,84,0.14); }
.kind-beat .bb-tag { color: #7fd6f0; background: rgba(90,200,232,0.14); }
.bb-edited { color: #1a1c22; background: var(--accent); }
.bb-text { min-width: 0; }
.bb-text b { color: var(--text); font-weight: 600; }
.kind-preset .bb-text b { color: var(--accent); }
.bb-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.bb-btn {
  display: inline-block;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.bb-btn.primary { color: #1a1c22; background: var(--accent); border-color: var(--accent); }
@media (hover: hover) {
  .bb-btn:hover { background: var(--cell-hover); }
  .bb-btn.primary:hover { background: #ffc46e; }
}
.bb-btn.danger-text { color: #ff9b9b; }
.bb-note { font-style: italic; }

/* ---------- Dialog & toasts ---------- */
.app-dialog {
  width: min(420px, calc(100vw - 32px));
  margin: auto;
  padding: 20px;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}
.app-dialog::backdrop { background: rgba(10,12,16,0.65); }
.dlg-title { margin-bottom: 8px; font-size: 17px; font-weight: 600; }
.dlg-message { margin-bottom: 12px; font-size: 13px; line-height: 1.5; color: var(--text-dim); }
.dlg-input {
  width: 100%;
  margin: 4px 0 8px;
  padding: 10px 12px;
  font: inherit;
  font-size: 16px;   /* below 16px iOS zooms the page on focus */
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  user-select: text;
  -webkit-user-select: text;
}
.dlg-input:focus { outline: 2px solid rgba(255,180,84,0.5); outline-offset: 1px; }
.dlg-error { margin-bottom: 8px; font-size: 13px; color: #ff9b9b; }
.dlg-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.dlg-ok { font-weight: 600; color: #1a1c22; background: var(--accent); border-color: var(--accent); }
.dlg-ok.danger { color: #fff; background: #a63c2d; border-color: #c8503e; }
@media (hover: hover) {
  .dlg-ok:hover { background: #ffc46e; }
  .dlg-ok.danger:hover { background: #b84634; }
}

.toasts {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: max-content;
  max-width: calc(100vw - 32px);
  transform: translateX(-50%);
  pointer-events: none;
}
.toast {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text);
  background: #2c323e;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.45);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: none; }
.toast.error { color: #ffc9c9; background: #3a282c; border-color: #7a4040; }

/* ---------- Note-value palette ---------- */
.palette {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}
.palette .label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-right: 4px; }

.tool-group {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 9px;
  opacity: 0.55;
  transition: opacity .12s, border-color .12s;
}
.tool-group.active-family { opacity: 1; border-color: var(--accent); }
.tool-group .group-label {
  font-size: 10px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: 2px;
}
.slot-toggle {
  min-width: 32px;
  padding: 6px 0;
  text-align: center;
  font-weight: 600;
}
.slot-toggle.on {
  border-color: var(--accent);
  background: rgba(255,180,84,0.18);
  color: var(--accent);
}
.glyph-preview {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px dashed var(--border);
  border-radius: 9px;
}
.glyph-preview svg { display: block; }
.glyph-preview .name { font-size: 11px; color: var(--accent); font-weight: 600; }

/* ---------- Sequencer grid ---------- */
.sequencer {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  max-width: 100%;
}
.seq-scroll { padding: 16px; overflow-x: auto; }
/* As wide as the grid (not the viewport), so sticky labels stay put across
   the whole scroll and the scroller's right padding is reachable. */
.seq-inner { display: flex; gap: 10px; min-width: max-content; }

/* Sticky so instrument names stay visible when a long loop scrolls. */
.row-labels {
  display: flex;
  flex-direction: column;
  gap: var(--cell-gap);
  padding-top: calc(var(--num-h) + var(--cell-gap));
  position: sticky;
  left: 0;
  z-index: 6;
  background: var(--panel);
}
.row-label {
  height: var(--cell-h);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding-right: 4px;
  min-width: 118px;
}
.row-label .name { font-size: 13px; font-weight: 600; white-space: nowrap; }
.row-label .mute {
  width: 26px; height: 26px;
  padding: 0;
  border-radius: 7px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-dim);
}
.row-label .mute.muted { background: #5c3434; border-color: #7a4040; color: #f0b3b3; }
.row-label .swatch { width: 8px; height: 34px; border-radius: 4px; }

.grid-wrap { position: relative; }
.beat-numbers { display: flex; gap: var(--cell-gap); height: var(--num-h); margin-bottom: var(--cell-gap); }
.beat-number {
  width: var(--cell-w);
  flex: none;
  text-align: center;
  font-size: 11px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
}
.beat-number.active { color: var(--accent); font-weight: 700; }
.beat-number.bar-start, .cell.bar-start { margin-left: var(--bar-gap); }

.grid { display: flex; flex-direction: column; gap: var(--cell-gap); }
.grid-row { display: flex; gap: var(--cell-gap); }

.cell {
  position: relative;
  width: var(--cell-w);
  flex: none;
  height: var(--cell-h);
  background: var(--cell);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: background .1s, border-color .1s, box-shadow .1s;
  overflow: hidden;
}
@media (hover: hover) {
  .cell:hover { background: var(--cell-hover); }
}
.cell.downbeat { border-left: 3px solid #4a5364; }
.cell.active {
  background: color-mix(in srgb, var(--row-color) 26%, var(--cell));
  border-color: color-mix(in srgb, var(--row-color) 65%, var(--border));
  box-shadow: 0 0 10px color-mix(in srgb, var(--row-color) 30%, transparent);
}
.cell .hit {
  position: absolute;
  bottom: 6px;
  top: 6px;
  width: var(--hit-w);
  border-radius: 3px;
  background: var(--row-color);
  box-shadow: 0 0 6px color-mix(in srgb, var(--row-color) 60%, transparent);
}
.cell .mode-tag {
  position: absolute;
  top: 3px;
  right: 6px;
  font-size: 9px;
  font-weight: 700;
  color: color-mix(in srgb, var(--row-color) 80%, white);
  opacity: 0.9;
  letter-spacing: 0.03em;
  pointer-events: none;
}
.cell.flash { animation: cellflash 0.18s ease-out; }
@keyframes cellflash {
  0% { filter: brightness(1.9); }
  100% { filter: brightness(1); }
}
/* Touch long-press-to-erase: a red wipe fills the cell while held. */
.cell::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(232, 90, 90, 0.5);
  transform: scaleX(0);
  transform-origin: left;
  pointer-events: none;
}
.cell.pressing::after { transform: scaleX(1); transition: transform 350ms linear 100ms; }

.playhead {
  position: absolute;
  top: calc(var(--num-h) + var(--cell-gap));
  bottom: 0;
  width: 3px;
  border-radius: 2px;
  background: var(--playhead);
  box-shadow: 0 0 10px var(--playhead), 0 0 26px rgba(255,210,122,0.5);
  pointer-events: none;
  display: none;
  z-index: 5;
}

.hint { margin-top: 16px; font-size: 12px; color: var(--text-dim); text-align: center; line-height: 1.7; max-width: 640px; }
.hint kbd {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 11px;
}