/* Themes. data-theme on <html> is set before first paint by the inline
   script in index.html ("auto" resolves to the computer's setting). Every
   token must exist in both blocks (tests/test_theme.py checks). The grid
   canvas reads the --cell / --step / --playhead tokens from js/app.js. */
:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --panel: #111318;
  --panel2: #161a23;
  --hover: #1c2130;
  --text: #e6e8ef;
  --muted: #9aa3b2;
  --edge: #2a2f3a;
  --shadow: rgba(0, 0, 0, 0.4);
  --backdrop: rgba(0, 0, 0, 0.55);

  --accent: #f2a93b;          /* fills: lit cells, open pipes, Play */
  --accent-text: #f2a93b;     /* accent used as text */
  --accent-hover: #ffba4a;
  --accent-glow: rgba(242, 169, 59, 0.6);
  --on-accent: #1a1300;
  --green: #42d392;
  --on-green: #062414;
  --green-soft: rgba(66, 211, 146, 0.15);
  --yellow: #f4c542;
  --on-yellow: #2a2000;
  --yellow-soft: rgba(244, 197, 66, 0.12);
  --red: #ef5350;
  --on-red: #ffffff;
  --red-fill: #d03c38;        /* buttons with white text; --red is for text */
  --red-hover: #b9322e;
  --red-glow: rgba(239, 83, 80, 0.25);
  --red-soft: #3a1d1d;
  --cyan: #5cd1ff;
  --cyan-soft: rgba(92, 209, 255, 0.15);
  --primary: #2a3247;
  --primary-edge: #3a4660;

  --pipe-off: #1f2430;
  --dot-off: #3a4150;
  --strip-bg: #161a23;
  --strip-head: rgba(255, 255, 255, 0.35);

  --cell-on: #f2a93b;         /* lit grid cells and open pipes */
  --on-cell: #1a1300;         /* text on --cell-on */
  --stage-ring: rgba(255, 255, 255, 0.07);
  --cell-off: #262b36;
  --cell-off-beat: #343a48;
  --step-text: #6b7385;
  --step-text-beat: #c4cad6;
  --step-text-now: #ffffff;
  --playhead-live: rgba(255, 255, 255, 0.22);
  --playhead-preview: rgba(92, 209, 255, 0.16);
  --playhead-preview-line: rgba(92, 209, 255, 0.8);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #eef0f3;
  --panel: #ffffff;
  --panel2: #f5f6f8;
  --hover: #e9ecf1;
  --text: #1a1d24;
  --muted: #5b6372;
  --edge: #d6dae1;
  --shadow: rgba(20, 25, 35, 0.15);
  --backdrop: rgba(20, 25, 35, 0.35);

  --accent: #f2a23a;
  --accent-text: #a35d05;
  --accent-hover: #f6b459;
  --accent-glow: rgba(232, 149, 31, 0.45);
  --on-accent: #2a1a00;
  --green: #0f6f4a;
  --on-green: #ffffff;
  --green-soft: rgba(15, 111, 74, 0.12);
  --yellow: #8f6200;
  --on-yellow: #ffffff;
  --yellow-soft: rgba(143, 98, 0, 0.10);
  --red: #c62f2b;
  --on-red: #ffffff;
  --red-fill: #c62f2b;
  --red-hover: #a92622;
  --red-glow: rgba(198, 47, 43, 0.25);
  --red-soft: #fbe6e5;
  --cyan: #08729f;
  --cyan-soft: rgba(8, 114, 159, 0.12);
  --primary: #e3e8f2;
  --primary-edge: #c3cbdb;

  --pipe-off: #e6e9ee;
  --dot-off: #c3c8d1;
  --strip-bg: #eceef2;
  --strip-head: rgba(0, 0, 0, 0.25);

  --cell-on: #b8600a;         /* deeper than --accent: 3.6:1 against empty cells */
  --on-cell: #ffffff;
  --stage-ring: rgba(0, 0, 0, 0.08);
  --cell-off: #e4e7ec;
  --cell-off-beat: #d3d8e0;
  --step-text: #8b93a1;
  --step-text-beat: #3d4450;
  --step-text-now: #000000;
  --playhead-live: rgba(0, 0, 0, 0.14);
  --playhead-preview: rgba(8, 114, 159, 0.12);
  --playhead-preview-line: rgba(8, 114, 159, 0.85);
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 13px;
}
body { min-height: 100vh; display: flex; flex-direction: column; }

/* ---------- topbar ---------- */
.topbar {
  display: flex; align-items: center; gap: 10px 18px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--edge);
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 15px; letter-spacing: 0.2px; }
.brand .ver { color: var(--muted); font-weight: 500; margin-left: 4px; font-size: 12px; }

.group { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.group label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.group .unit { color: var(--muted); font-size: 11px; }

select, input {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 6px;
  padding: 6px 8px; font-size: 13px;
  font-family: inherit;
}
input[type="number"] { width: 58px; }
#portSelect { max-width: 220px; }
#presetSelect { max-width: 180px; }
select:disabled { opacity: 0.85; color: var(--green); }

button {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--edge); border-radius: 6px;
  padding: 6px 12px; font-size: 13px; cursor: pointer;
  font-family: inherit;
  min-height: 32px;
}
button:hover:not(:disabled) { background: var(--hover); }
button:disabled { opacity: 0.5; cursor: default; }
button:focus-visible, select:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 1px;
}
button.primary { background: var(--primary); border-color: var(--primary-edge); }
button.primary.connected { background: var(--green); color: var(--on-green); border-color: var(--green); }
button.accent { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 600; }
button.accent:hover:not(:disabled) { background: var(--accent-hover); }
#playBtn { min-width: 92px; }
#playBtn.playing {
  background: var(--red-fill); border-color: var(--red-fill); color: var(--on-red);
  animation: playing 1.2s ease-in-out infinite;
}
@keyframes playing {
  50% { box-shadow: 0 0 0 4px var(--red-glow); }
}

/* ---------- truth bar: what the screen is showing ---------- */
.truth {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 8px 16px;
  border-bottom: 1px solid var(--edge);
  background: var(--panel2);
  font-size: 12px;
}
.truth .mode {
  font-weight: 700; font-size: 11px; letter-spacing: 0.8px;
  padding: 3px 8px; border-radius: 4px;
  background: var(--primary); color: var(--muted);
}
.truth.preview .mode { background: var(--cyan-soft); color: var(--cyan); }
.truth.live .mode    { background: var(--green); color: var(--on-green); }
.truth.stopped .mode { background: var(--green-soft); color: var(--green); }
.truth.warn .mode    { background: var(--yellow); color: var(--on-yellow); }
.truth .sync { margin-left: auto; font-family: Menlo, monospace; font-size: 11px; color: var(--muted); }
.truth .sync.ok   { color: var(--green); }
.truth .sync.wait { color: var(--muted); }
.truth .sync.warn { color: var(--yellow); }
.truth .sync.err  { color: var(--red); }

/* ---------- main ---------- */
main {
  flex: 1;
  display: flex; flex-direction: column;
  gap: 14px;
  padding: 14px 16px 16px;
  min-width: 0;
}
.grid-wrap {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 10px;
  padding: 16px;
  overflow-x: auto;
}
#grid {
  display: block; margin: 0 auto;
  cursor: crosshair;
  touch-action: none;          /* drags paint instead of scrolling */
  user-select: none; -webkit-user-select: none;
}
.hint { margin: 10px 0 0; text-align: center; color: var(--muted); font-size: 11px; }

/* ---------- pipe panel ---------- */
.peers {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 10px;
}
.peer {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 10px;
  padding: 10px 6px;
  display: flex; flex-direction: column; align-items: center;
  gap: 6px;
  min-width: 0;
  transition: opacity 150ms;
}
.peer.unused { opacity: 0.3; }
.peer .label { font-weight: 700; font-size: 14px; letter-spacing: 1px; color: var(--muted); }
.peer .pipe {
  width: 30px; height: 56px;
  border-radius: 6px;
  background: var(--pipe-off);
  border: 1px solid var(--edge);
  transition: background 60ms linear, box-shadow 160ms ease-out;
}
.peer.open .pipe {
  background: var(--cell-on);
  box-shadow: 0 0 18px var(--accent-glow);
}
/* Preview: pipes are outlined, never solid, so it can't pass for the organ. */
.peers.preview .peer.open .pipe {
  background: transparent;
  border: 2px dashed var(--cyan);
  box-shadow: none;
}
.peer .state-text { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.peer.open .state-text { color: var(--accent-text); font-weight: 600; }
.peers.preview .peer.open .state-text { color: var(--cyan); }
.peer .stats { display: flex; align-items: center; gap: 5px; font-size: 10px; color: var(--muted); white-space: nowrap; }
.peer .dot {
  width: 8px; height: 8px; border-radius: 50%; flex: none;
  background: var(--dot-off);
  transition: background 200ms;
}
.peer .dot.ok   { background: var(--green); }
.peer .dot.wait { background: transparent; border: 1.5px solid var(--muted); }
.peer .dot.fail { background: var(--red); }

.peer .strip {
  width: 100%; height: 6px;
  background: var(--strip-bg);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}
.peer .strip .cell { position: absolute; top: 0; bottom: 0; background: var(--cell-on); }
.peer .strip .head {
  position: absolute; top: -1px; bottom: -1px;
  background: var(--strip-head);
  pointer-events: none;
}

/* ---------- listening stage ---------- */
.stage-wrap {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 10px;
  padding: 14px 16px;
}
.stage-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 16px; }
.stage-head h2 { margin: 0; font-size: 14px; }
.stage-head .sub { color: var(--muted); font-weight: 400; font-size: 12px; margin-left: 6px; }
.stage-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; }
.ctl { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
input[type="range"] { accent-color: var(--accent); width: 110px; padding: 0; background: transparent; border: none; }
#soundBtn { min-width: 120px; }
#soundBtn[aria-pressed="true"] { background: var(--panel2); color: var(--text); border-color: var(--edge); font-weight: 400; }
.meter { display: flex; flex-direction: column; gap: 3px; font-size: 10px; color: var(--muted); }
.meter .row { display: flex; align-items: center; gap: 4px; }
.meter .bar { width: 90px; height: 6px; background: var(--strip-bg); border-radius: 3px; overflow: hidden; }
.meter .bar i { display: block; height: 100%; width: 0; background: var(--green); transition: width 60ms linear; }
.stage-note { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
.stage-note.warn { color: var(--yellow); }
.stage-body {
  display: grid; grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  gap: 16px; margin-top: 12px; align-items: start;
}
.stage {
  /* --lx/--ly: where the listener stands; --ring: 2 m in this room (set by app.js) */
  --lx: 50%; --ly: 62%; --ring: calc(200cqw / 12);
  container-type: inline-size;
  position: relative; aspect-ratio: 1; width: 100%;
  background: var(--panel2);
  border: 1px solid var(--edge); border-radius: 8px;
  overflow: hidden; touch-action: none; user-select: none; -webkit-user-select: none;
}
/* Distance rings around the listener. On a child, so cqw measures the stage. */
.stage::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: repeating-radial-gradient(circle at var(--lx) var(--ly),
    transparent 0 calc(var(--ring) - 1px), var(--stage-ring) calc(var(--ring) - 1px) var(--ring));
}
.front-label {
  position: absolute; top: 6px; left: 50%; transform: translateX(-50%);
  font-size: 10px; color: var(--muted); letter-spacing: 0.5px; text-transform: uppercase;
  pointer-events: none;
}
.stage-token {
  position: absolute; transform: translate(-50%, -50%);
  width: 34px; height: 34px; min-height: 0; padding: 0;
  border-radius: 50%; border: 2px solid var(--edge);
  background: var(--panel); color: var(--text);
  font-weight: 700; font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  cursor: grab; touch-action: none; z-index: 2;
  transition: background 60ms linear, box-shadow 160ms ease-out;
}
.stage-token:hover:not(:disabled) { background: var(--hover); }
.stage-token .n {
  position: absolute; top: 100%; margin-top: 3px;
  font-size: 10px; font-weight: 500; color: var(--muted); white-space: nowrap; pointer-events: none;
}
.stage-token.open, .stage-token.open:hover:not(:disabled) {
  background: var(--cell-on); border-color: var(--cell-on); color: var(--on-cell);
  box-shadow: 0 0 16px var(--accent-glow);
}
.stage-token.unused { opacity: 0.35; }
.stage-token.dragging { cursor: grabbing; z-index: 3; }
.stage-token.listener {
  width: 40px; height: 40px; font-size: 18px;
  background: var(--primary); border-color: var(--cyan); z-index: 1;
}
.stage-side { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.pitches { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 6px 14px; width: 100%; }
.pitch-row { display: flex; align-items: center; gap: 6px; }
.pitch-row .name { width: 14px; font-weight: 700; color: var(--muted); }
.pitch-row select { flex: 1; min-width: 76px; }
.pitch-row button { padding: 4px 8px; min-height: 30px; }
.pitch-row .quarter { padding: 4px 6px; font-size: 12px; }
.pitch-row .quarter[aria-pressed="true"],
.pitch-row .quarter[aria-pressed="true"]:hover:not(:disabled) {
  background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 600;
}
.pitch-row.unused { opacity: 0.45; }

/* ---------- log drawer (collapsed by default) ---------- */
.log-wrap {
  background: var(--panel);
  border: 1px solid var(--edge);
  border-radius: 10px;
  overflow: hidden;
}
.log-wrap summary {
  padding: 8px 12px;
  display: flex; align-items: center; gap: 10px;
  color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px;
  cursor: pointer; list-style: none;
}
.log-wrap summary::before { content: "▸"; transition: transform 120ms; }
.log-wrap[open] summary::before { transform: rotate(90deg); }
.log-wrap[open] summary { border-bottom: 1px solid var(--edge); }
.log-count { color: var(--red); text-transform: none; letter-spacing: 0; }
.autoscroll { margin-left: auto; display: flex; align-items: center; gap: 5px; text-transform: none; letter-spacing: 0; }
.log {
  height: 220px; overflow-y: auto;
  padding: 8px 12px;
  font-family: Menlo, monospace; font-size: 11px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}
.log .send { color: var(--cyan); }
.log .ok   { color: var(--green); }
.log .warn { color: var(--yellow); }
.log .err  { color: var(--red); }
.log .info { color: var(--muted); }

/* ---------- toasts ---------- */
.toasts {
  position: fixed; right: 16px; bottom: 16px; z-index: 10;
  display: flex; flex-direction: column; gap: 8px; align-items: flex-end;
  max-width: calc(100vw - 32px);
}
.toast {
  background: var(--panel2); color: var(--text);
  border: 1px solid var(--edge); border-left: 4px solid var(--muted);
  border-radius: 8px; padding: 10px 14px;
  box-shadow: 0 6px 24px var(--shadow);
  cursor: pointer; max-width: 420px;
  animation: toast-in 160ms ease-out;
}
.toast.ok   { border-left-color: var(--green); }
.toast.warn { border-left-color: var(--yellow); }
.toast.err  { border-left-color: var(--red); }
@keyframes toast-in { from { transform: translateY(8px); opacity: 0; } }

/* ---------- dialog ---------- */
dialog {
  background: var(--panel); color: var(--text);
  border: 1px solid var(--edge); border-radius: 12px;
  padding: 18px; width: min(380px, calc(100vw - 32px));
}
dialog::backdrop { background: var(--backdrop); }
dialog form { display: flex; flex-direction: column; gap: 10px; }
dialog label { font-weight: 600; }
dialog input { width: 100%; font-size: 15px; padding: 8px 10px; }
.dialog-error { margin: 0; min-height: 16px; font-size: 12px; color: var(--red); }
.dialog-error.note { color: var(--yellow); }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; margin: 0; padding: 0; }

.group.end { margin-left: auto; }
.brand .ver #modeName { color: var(--cyan); }

/* "More" dropdown */
.menu { position: relative; }
.menu summary {
  list-style: none; cursor: pointer;
  background: var(--panel2); border: 1px solid var(--edge); border-radius: 6px;
  padding: 6px 12px; min-height: 32px; display: flex; align-items: center;
}
.menu summary::-webkit-details-marker { display: none; }
.menu[open] summary { background: var(--hover); }
.menu-items {
  position: absolute; right: 0; top: calc(100% + 4px); z-index: 5;
  background: var(--panel); border: 1px solid var(--edge); border-radius: 8px;
  padding: 4px; min-width: 220px;
  display: flex; flex-direction: column;
  box-shadow: 0 8px 24px var(--shadow);
}
.menu-items button { text-align: left; background: transparent; border-color: transparent; }
.menu-items button:hover { background: var(--panel2); }

.banner {
  padding: 10px 16px; font-size: 13px;
  background: var(--yellow-soft); color: var(--yellow);
  border-bottom: 1px solid var(--edge);
}

dialog.wide { width: min(520px, calc(100vw - 32px)); }
.fw-row { display: flex; align-items: center; gap: 12px; padding: 8px 0; border-top: 1px solid var(--edge); }
.fw-row p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.4; }
.fw-row esp-web-install-button { flex: none; }
button.quit:hover:not(:disabled) { background: var(--red-soft); border-color: var(--red); }
button.danger { background: var(--red-fill); border-color: var(--red-fill); color: var(--on-red); font-weight: 600; }
button.danger:hover:not(:disabled) { background: var(--red-hover); }
#savePreset.modified::after { content: " •"; color: var(--accent-text); }

/* theme switch */
#themeBtn { min-width: 74px; }

.confirm-title { margin: 0; font-weight: 600; font-size: 15px; }
.confirm-body { margin: 0 0 6px; color: var(--muted); line-height: 1.45; }

.closed-screen {
  position: fixed; inset: 0; z-index: 20;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 24px;
}
.closed-screen[hidden] { display: none; }
.closed-screen h1 { font-size: 22px; margin: 0 0 10px; }
.closed-screen p { margin: 6px 0; }
.closed-screen .muted { color: var(--muted); }

/* ---------- credits ---------- */
.credits-footer {
  padding: 4px 16px 20px; text-align: center;
  color: var(--muted); font-size: 11.5px; line-height: 1.6;
}
.credits-footer p { margin: 2px 0; }
button.link {
  background: none; border: none; padding: 0; min-height: 0;
  color: var(--cyan); font-size: inherit; text-decoration: underline; cursor: pointer;
}
button.link:hover:not(:disabled) { background: none; }
dialog.about { width: min(600px, calc(100vw - 32px)); max-height: calc(100vh - 48px); }
dialog.about h2 { margin: 0; font-size: 18px; }
dialog.about h2 .ver { color: var(--muted); font-weight: 500; font-size: 13px; }
dialog.about h3 { margin: 6px 0 0; font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); }
dialog.about p, dialog.about li { line-height: 1.55; }
dialog.about p { margin: 0; }
dialog.about ul { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 4px; }
dialog.about a { color: var(--cyan); }
dialog.about .muted { color: var(--muted); }

/* ---------- playing together ---------- */
body[data-role="guest"] .host-only { display: none !important; }
/* until the page knows whether it's the host or a guest (a moment) */
body[data-role="unknown"] .host-only { visibility: hidden; }
.presence {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px;
  padding: 6px 16px; font-size: 12px; color: var(--muted);
  border-bottom: 1px solid var(--edge); background: var(--panel);
}
.presence[hidden] { display: none; }
.presence .who {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text); font-size: 12px;
}
.presence button.who {
  background: var(--panel2); border: 1px solid var(--edge); border-radius: 12px;
  padding: 2px 10px; min-height: 0;
}
.presence .who .dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
dialog.share { width: min(560px, calc(100vw - 32px)); }
.share-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-start; }
.share-qr {
  width: 200px; height: 200px; flex: none;
  border-radius: 8px; overflow: hidden; background: var(--panel2);
  display: flex; align-items: center; justify-content: center; text-align: center;
  color: var(--muted); font-size: 12px; padding: 0;
}
.share-qr svg { width: 100%; height: 100%; display: block; }
.share-info { flex: 1; min-width: 200px; display: flex; flex-direction: column; gap: 8px; }
.share-info p { margin: 0; }
.share-code { font-size: 14px; }
.share-code b { font-size: 26px; letter-spacing: 4px; margin-left: 6px; color: var(--text); }
.share-link { font-family: Menlo, monospace; font-size: 11px; color: var(--muted); overflow-wrap: anywhere; }
#shareStart { min-width: 160px; }
#shareStop { align-self: flex-start; }

/* ---------- small screens ---------- */
@media (max-width: 720px) {
  .topbar { gap: 8px 12px; padding: 10px 12px; }
  .brand { width: 100%; }
  .conn { width: 100%; }
  #portSelect { flex: 1; max-width: none; min-width: 0; }
  .truth { padding: 8px 12px; }
  .truth .sync { margin-left: 0; width: 100%; }
  main { padding: 12px; }
  .grid-wrap { padding: 10px; }
  .peers { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
  .peer .pipe { height: 40px; }
  .stage-body { grid-template-columns: minmax(0, 1fr); }
  .stage-head .sub { display: block; margin: 2px 0 0; }
  button, select, input { min-height: 38px; }
}