/* Euclid Button — dark warm room, amber neon, cream monospace. */

:root {
  --bg-0: #0b0705;
  --bg-1: #140d09;
  --bg-2: #1d1410;
  --panel: rgba(29, 20, 16, 0.72);
  --panel-line: rgba(255, 178, 77, 0.14);
  --ink: #f3e5cd;
  --ink-soft: rgba(243, 229, 205, 0.62);
  --ink-dim: rgba(243, 229, 205, 0.34);
  --amber: #ffb24d;
  --amber-soft: rgba(255, 178, 77, 0.55);
  --amber-dim: rgba(255, 178, 77, 0.18);
  --hot: #ff5c34;
  --cell: #1a120d;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --display: "Avenir Next", "Inter", "Helvetica Neue", Arial, sans-serif;
  --radius: 14px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  padding: 0 0 40px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.45;
  background:
    radial-gradient(1200px 620px at 50% -12%, #33200f 0%, #1a100a 42%, #0c0806 78%),
    var(--bg-0);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

/* film grain + vignette */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  opacity: 0.35;
  background-image:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.014) 0 1px, transparent 1px 3px),
    radial-gradient(120% 90% at 50% 40%, transparent 55%, rgba(0, 0, 0, 0.55) 100%);
  mix-blend-mode: overlay;
}

h1, h2, h3, p { margin: 0; }

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px clamp(16px, 4vw, 46px) 10px;
}

.brand { display: flex; align-items: center; gap: 14px; }

.brand .glyph { color: var(--amber); filter: drop-shadow(0 0 10px rgba(255, 178, 77, 0.45)); display: flex; }

.brand h1 {
  font-family: var(--display);
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 650;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #fff3e0;
  text-shadow: 0 0 24px rgba(255, 178, 77, 0.28);
}

.tagline {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.topbar-actions { display: flex; align-items: center; gap: 10px; }

.status-pill {
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid var(--panel-line);
  border-radius: 999px;
  padding: 4px 10px;
  background: rgba(255, 178, 77, 0.06);
}

.ghost-btn, .send-btn {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--panel-line);
  border-radius: 9px;
  padding: 7px 12px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.ghost-btn:hover, .send-btn:hover {
  color: var(--ink);
  border-color: var(--amber-soft);
  background: rgba(255, 178, 77, 0.08);
}

/* ---------- layout ---------- */

.shell {
  max-width: 1320px;
  margin: 0 auto;
  padding: 10px clamp(16px, 4vw, 46px) 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.section-label {
  font-size: 10.5px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.stage {
  display: grid;
  grid-template-columns: minmax(300px, 0.85fr) minmax(420px, 1.55fr);
  gap: 18px;
  align-items: start;
}

.panel {
  background: linear-gradient(180deg, rgba(38, 26, 19, 0.72), rgba(17, 12, 9, 0.82));
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  padding: 14px 16px 16px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03), 0 18px 40px -28px #000;
}

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

/* ---------- prompt ---------- */

.prompt-box {
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  padding: 12px 14px;
  background: linear-gradient(180deg, rgba(46, 30, 20, 0.55), rgba(16, 11, 8, 0.8));
}

.prompt-box form {
  display: flex;
  align-items: center;
  gap: 10px;
}

.prompt-label {
  font-size: 10.5px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--amber);
  opacity: 0.85;
  flex: 0 0 auto;
}

#prompt {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14.5px;
  padding: 6px 2px;
  caret-color: var(--amber);
}

#prompt::placeholder { color: rgba(243, 229, 205, 0.26); }

.send-btn { padding: 6px 11px; font-size: 13px; letter-spacing: 0; }

.prompt-foot { display: flex; flex-direction: column; gap: 3px; margin-top: 6px; }

.hint {
  font-size: 11.5px;
  color: var(--ink-dim);
  letter-spacing: 0.02em;
}

.notes {
  font-size: 11.5px;
  color: var(--amber-soft);
  letter-spacing: 0.02em;
  min-height: 1em;
}

.notes.err { color: #ff8a6a; }

/* settings drawer */
.settings {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--panel-line);
  display: grid;
  gap: 8px;
}

.settings-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
}

.settings-row label {
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.settings-row input[type="text"],
.settings-row input[type="password"] {
  background: rgba(10, 7, 5, 0.75);
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  padding: 7px 10px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 12.5px;
  outline: none;
}

.settings-row input:focus { border-color: var(--amber-soft); }

.settings-actions {
  grid-template-columns: auto auto minmax(0, 1fr);
  justify-content: start;
}

/* ---------- presets ---------- */

.presets { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.preset-list { display: flex; gap: 8px; flex-wrap: wrap; }

.preset-btn {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  background: rgba(255, 178, 77, 0.035);
  border: 1px solid var(--panel-line);
  border-radius: 999px;
  padding: 6px 13px;
  cursor: pointer;
  transition: all 0.16s;
  white-space: nowrap;
}

.preset-btn b { font-weight: 600; color: var(--ink); letter-spacing: 0.12em; }

.preset-btn span { color: var(--ink-dim); font-size: 10.5px; margin-left: 6px; }

.preset-btn:hover {
  color: var(--ink);
  border-color: var(--amber-soft);
  box-shadow: 0 0 18px -6px rgba(255, 178, 77, 0.7);
}

.preset-btn.on {
  color: #1c1208;
  background: linear-gradient(180deg, #ffd08a, #f0a03c);
  border-color: transparent;
  box-shadow: 0 0 24px -6px rgba(255, 178, 77, 0.85);
}

.preset-btn.on b, .preset-btn.on span { color: #2a1a08; }

/* ---------- circle panel ---------- */

.euclid-tag {
  font-size: 11.5px;
  color: var(--amber);
  letter-spacing: 0.03em;
  text-shadow: 0 0 16px rgba(255, 178, 77, 0.35);
  text-align: right;
}

.circle-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#circle { width: 100%; height: 100%; display: block; }

.transport {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-top: 6px;
}

.play-btn {
  display: inline-flex;
  justify-content: center;
  align-self: stretch;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #1c1208;
  background: linear-gradient(180deg, #ffd08a, #ef9c36);
  border: 0;
  border-radius: 10px;
  padding: 9px 16px;
  cursor: pointer;
  box-shadow: 0 0 26px -6px rgba(255, 178, 77, 0.8);
  transition: transform 0.12s, box-shadow 0.16s;
}

.play-btn:hover { transform: translateY(-1px); box-shadow: 0 0 34px -4px rgba(255, 178, 77, 0.95); }
.play-btn.playing { background: linear-gradient(180deg, #ff8a63, #e0472c); color: #fff5ec; }

.knob {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 38px;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.knob label {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.knob output {
  font-size: 12px;
  color: var(--ink);
  min-width: 30px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.harmony-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding-top: 9px;
  border-top: 1px dashed var(--panel-line);
}

.harmony-row select.mini {
  flex: 1 1 0;
  min-width: 0;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  background: rgba(8, 5, 4, 0.7);
  border: 1px solid var(--panel-line);
  border-radius: 7px;
  padding: 5px 6px;
  outline: none;
  cursor: pointer;
}

.harmony-row select.mini:focus { border-color: var(--amber-soft); }

.key-out {
  font-size: 11px;
  color: var(--amber);
  letter-spacing: 0.03em;
  white-space: nowrap;
  margin-left: auto;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  min-width: 0;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--amber) var(--fill, 50%), rgba(243, 229, 205, 0.14) var(--fill, 50%));
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: #ffe1b2;
  border: 0;
  box-shadow: 0 0 12px rgba(255, 178, 77, 0.9);
}

input[type="range"]::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border: 0;
  border-radius: 50%;
  background: #ffe1b2;
  box-shadow: 0 0 12px rgba(255, 178, 77, 0.9);
}

.texture-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--panel-line);
}

.switch { display: inline-flex; align-items: center; gap: 9px; cursor: pointer; }

.switch input { position: absolute; opacity: 0; pointer-events: none; }

.switch-ui {
  width: 34px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--panel-line);
  background: rgba(0, 0, 0, 0.4);
  position: relative;
  transition: background 0.18s, border-color 0.18s;
}

.switch-ui::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(243, 229, 205, 0.5);
  transition: transform 0.18s, background 0.18s;
}

.switch input:checked + .switch-ui { background: rgba(255, 178, 77, 0.22); border-color: var(--amber-soft); }
.switch input:checked + .switch-ui::after { transform: translateX(16px); background: var(--amber); box-shadow: 0 0 10px var(--amber); }

.switch-txt {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- tracks ---------- */

.tracks { display: flex; flex-direction: column; gap: 10px; }

.foot-hint { margin-top: 12px; }

.track {
  --c: 255, 178, 77;
  display: grid;
  grid-template-columns: 78px minmax(120px, 1fr) auto 118px auto;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(255, 178, 77, 0.1);
  border-radius: 11px;
  background: linear-gradient(180deg, rgba(31, 22, 16, 0.75), rgba(14, 10, 7, 0.72));
  transition: border-color 0.16s, box-shadow 0.16s;
}

.track.sel {
  border-color: rgba(255, 178, 77, 0.42);
  box-shadow: 0 0 0 1px rgba(255, 178, 77, 0.12), 0 0 26px -14px rgba(255, 178, 77, 0.9);
}

.track-name {
  display: flex;
  flex-direction: column;
  gap: 2px;
  cursor: pointer;
  background: none;
  border: 0;
  padding: 0;
  text-align: left;
  font-family: var(--mono);
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  overflow: hidden;
}

.track-name em {
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
  text-transform: none;
}

.track.sel .track-name { color: var(--amber); text-shadow: 0 0 14px rgba(255, 178, 77, 0.4); }

.cells { position: relative; display: flex; gap: 4px; align-items: center; height: 34px; }

.cell {
  flex: 1;
  min-width: 0;
  height: 26px;
  border-radius: 7px;
  border: 0;
  padding: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(0, 0, 0, 0.25)),
    #17100c;
  box-shadow: inset 0 0 0 1px rgba(255, 178, 77, 0.06);
  cursor: pointer;
  transition: background 0.09s, box-shadow 0.09s, transform 0.09s;
}

.cell.hit {
  background: linear-gradient(180deg, rgba(var(--c), 1), rgba(var(--c), 0.55));
  box-shadow: 0 0 18px -1px rgba(var(--c), 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.cell.hit.on {
  transform: scaleY(1.12);
  box-shadow: 0 0 26px 0 rgba(var(--c), 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(var(--c), 1));
}

.cell.rest:hover { background: #241810; }

/* manual edits: the Euclid pattern stays visible underneath the overlay */
.cell.ovr-on {
  position: relative;
  background: linear-gradient(180deg, rgba(var(--c), 0.92), rgba(var(--c), 0.42));
  box-shadow: 0 0 16px -2px rgba(var(--c), 0.5), inset 0 0 0 1px rgba(255, 248, 236, 0.55);
}

.cell.ovr-on::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 5px;
  border: 1px dashed rgba(255, 250, 240, 0.7);
  pointer-events: none;
}

.cell.ovr-off {
  position: relative;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.55)),
    #17100c;
  box-shadow: inset 0 0 0 1px rgba(255, 92, 52, 0.34);
}

.cell.ovr-off::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 5px;
  height: 5px;
  margin: -2.5px 0 0 -2.5px;
  border-radius: 50%;
  border: 1px solid rgba(255, 92, 52, 0.6);
  pointer-events: none;
}

.edits {
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--hot);
  opacity: 0.85;
  white-space: nowrap;
}

.playhead {
  position: absolute;
  top: -5px;
  bottom: -5px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(255, 92, 52, 0.15), var(--hot) 22%, var(--hot) 78%, rgba(255, 92, 52, 0.15));
  box-shadow: 0 0 12px 1px rgba(255, 92, 52, 0.8);
  transform: translateX(-1px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}

.playing .playhead { opacity: 1; }

.track-params {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11.5px;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.stepper {
  width: 17px;
  height: 17px;
  line-height: 1;
  padding: 0;
  border-radius: 5px;
  border: 1px solid var(--panel-line);
  background: rgba(0, 0, 0, 0.3);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 11px;
  cursor: pointer;
}

.stepper:hover { color: var(--amber); border-color: var(--amber-soft); }

.kn { min-width: 17px; text-align: center; color: var(--ink); font-size: 12px; }
.kn.k-pulse { color: var(--amber); }

.slash { color: var(--ink-dim); margin: 0 1px; }

select.inst {
  width: 100%;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  background: rgba(8, 5, 4, 0.7);
  border: 1px solid var(--panel-line);
  border-radius: 7px;
  padding: 5px 6px;
  outline: none;
  cursor: pointer;
}

select.inst:focus { border-color: var(--amber-soft); }

.icon-btn {
  width: 26px;
  height: 26px;
  padding: 0;
  border-radius: 7px;
  border: 1px solid var(--panel-line);
  background: transparent;
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  transition: color 0.14s, border-color 0.14s, background 0.14s;
}

.icon-btn:hover { color: var(--ink); border-color: var(--amber-soft); }

.icon-btn.muted {
  color: #ff8a6a;
  border-color: rgba(255, 92, 52, 0.5);
  background: rgba(255, 92, 52, 0.12);
}

.icon-btn.reset {
  color: var(--amber);
  border-color: var(--amber-soft);
  background: rgba(255, 178, 77, 0.1);
}

.foot {
  padding: 6px 2px 0;
  font-size: 11px;
  color: rgba(243, 229, 205, 0.24);
  letter-spacing: 0.04em;
}

/* ---------- responsive ---------- */

@media (max-width: 960px) {
  .stage { grid-template-columns: 1fr; }
  .circle-wrap { max-height: 320px; }
  .track {
    grid-template-columns: 84px minmax(90px, 1fr) auto auto;
    grid-template-areas: "name cells params btns" "inst inst inst inst";
    row-gap: 8px;
  }
  .track-name { grid-area: name; }
  .cells { grid-area: cells; }
  .track-params { grid-area: params; }
  select.inst { grid-area: inst; }
  .track-btns { grid-area: btns; }
}

@media (max-width: 560px) {
  .topbar { flex-wrap: wrap; gap: 12px; }
  .topbar-actions { width: 100%; justify-content: space-between; }
  .brand h1 { font-size: 19px; letter-spacing: 0.16em; }
  .tagline { display: none; }
}

@media (max-width: 520px) {
  .track {
    grid-template-columns: 1fr auto auto;
    grid-template-areas: "name params btns" "cells cells cells" "inst inst inst";
  }
  .cell { height: 22px; border-radius: 6px; }
  .cells { gap: 3px; height: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* ---------- additions: readout, track buttons, warning ---------- */

.euclid-tag .pat { letter-spacing: 0.1em; }

.euclid-tag .pat b {
  font-weight: 500;
  color: var(--ink-dim);
}

.euclid-tag .pat b.h {
  color: var(--amber);
  text-shadow: 0 0 12px rgba(255, 178, 77, 0.55);
}

.track-btns { display: inline-flex; gap: 4px; }

.hint.warn { color: rgba(255, 138, 106, 0.72); margin-top: 2px; }


/* [hidden] must win over the display rules above */
.settings[hidden] { display: none; }