/* ============= XR18 Mix — design responsivo, colorido ============== */
:root {
  --bg: #0b0f1a;
  --bg-2: #0f1525;
  --surface: #181f33;
  --surface-2: #222b44;
  --border: #2a3450;
  --text: #ecf0fa;
  --muted: #8a96b1;
  --primary: #3b82f6;
  --ok: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
  --magenta: #ec4899;
  --cyan: #06b6d4;
  --yellow: #eab308;
  --white-c: #f3f4f6;
  --green-c: #22c55e;
  --red-c: #ef4444;
  --blue-c: #3b82f6;
  --pad: 16px;
  --radius: 14px;
  --touch: 44px;
}

* { box-sizing: border-box; }
*::-webkit-scrollbar { display: none; }

html, body {
  margin: 0; padding: 0;
  background:
    radial-gradient(circle at 15% -10%, rgba(59,130,246,0.12), transparent 50%),
    radial-gradient(circle at 90% 10%, rgba(236,72,153,0.10), transparent 55%),
    radial-gradient(circle at 50% 110%, rgba(34,197,94,0.10), transparent 55%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior: none;
}
body { display: flex; flex-direction: column; }
/* Tela de seleção volta a permitir scroll (lista de buses) */
body.is-select { overflow-y: auto; }
body.is-select .select { flex: 1; }

.hidden { display: none !important; }

/* ===================== HEADERS ===================== */
.select__head, .mix__head {
  display: flex; align-items: center; gap: 14px;
  padding: 18px var(--pad) 14px;
  padding-top: max(env(safe-area-inset-top), 18px);
  position: sticky; top: 0;
  background: linear-gradient(180deg, rgba(11,15,26,0.92), rgba(11,15,26,0.6) 70%, transparent);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.select__head h1, .mix__title h1 {
  margin: 0; font-size: 22px; font-weight: 700;
  letter-spacing: -0.01em;
}
.select__head { justify-content: space-between; }
.mix__title { flex: 1; min-width: 0; }
.mix__title h1 {
  font-size: 18px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.mix__sub { color: var(--muted); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; }

.iconbtn {
  display: flex; align-items: center; justify-content: center;
  width: var(--touch); height: var(--touch);
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 20px;
  text-decoration: none;
  flex-shrink: 0;
  transition: transform 0.1s, background 0.15s;
}
.iconbtn:active { transform: scale(0.95); background: var(--surface-2); }
.iconbtn--back { font-size: 24px; }

.dot {
  display: inline-block;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
}
.dot--on  { background: var(--ok);     box-shadow: 0 0 12px rgba(34,197,94,0.55); animation: pulse 2.4s ease-in-out infinite; }
.dot--off { background: var(--danger); box-shadow: 0 0 12px rgba(239,68,68,0.55); }
.dot--reconnecting { background: var(--warn); box-shadow: 0 0 12px rgba(245,158,11,0.55); animation: pulse 0.9s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.45; } }

/* ===================== SELECT (lista de buses) ===================== */
.select { padding-bottom: max(env(safe-area-inset-bottom), 24px); }
.select__sub { color: var(--muted); margin: 0 var(--pad) 18px; }

.bus-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  padding: 0 var(--pad);
}
.bus-card {
  position: relative;
  display: block;
  padding: 22px 20px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  overflow: hidden;
  transition: transform 0.15s, box-shadow 0.15s;
}
.bus-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--bus-color, var(--primary)) 0%, transparent 60%);
  opacity: 0.18;
  pointer-events: none;
}
.bus-card::after {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 5px;
  background: var(--bus-color, var(--primary));
}
.bus-card:active { transform: scale(0.98); }
.bus-card__num {
  font-size: 12px; color: var(--muted); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
}
.bus-card__name {
  font-size: 22px; font-weight: 700; margin: 4px 0 8px;
}
.bus-card__meta {
  font-size: 13px; color: var(--muted);
}

/* ===================== MIX (tela do músico) ===================== */
.mix {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 0;
  overflow: hidden;
}
.mix__head { flex-shrink: 0; padding-bottom: 10px; }
.master { margin: 0 var(--pad) 12px; flex-shrink: 0; }
.channels-area {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  padding-bottom: max(env(safe-area-inset-bottom), 4px);
}

/* Master ----------------------------------- */
.master {
  background: linear-gradient(135deg, rgba(59,130,246,0.18), rgba(59,130,246,0.04));
  border: 1px solid rgba(59,130,246,0.4);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transition: opacity 0.2s;
}
.master.is-muted { opacity: 0.7; }
.master__row { display: flex; align-items: center; gap: 14px; }
.master__info { flex: 1; min-width: 0; }
.master__lbl { margin: 0; font-size: 13px; color: var(--muted); font-weight: 500; }
.master__db {
  margin: 4px 0 0;
  font-size: 32px; font-weight: 700; letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.master.is-muted .master__db { color: var(--danger); text-decoration: line-through; }

.fader-h { margin-top: 14px; }
.range--h {
  width: 100%;
  height: 56px;
  -webkit-appearance: none; appearance: none;
  background: transparent;
}
.range--h::-webkit-slider-runnable-track {
  height: 14px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary) var(--fill, 0%), var(--surface-2) var(--fill, 0%));
  border-radius: 999px;
  border: 1px solid var(--border);
}
.range--h::-moz-range-track { height: 14px; background: var(--surface-2); border-radius: 999px; }
.range--h::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 36px; height: 36px;
  background: white;
  border-radius: 50%;
  margin-top: -12px;
  border: 4px solid var(--primary);
  box-shadow: 0 4px 10px rgba(0,0,0,0.35);
}
.range--h::-moz-range-thumb {
  width: 36px; height: 36px;
  background: white; border-radius: 50%;
  border: 4px solid var(--primary);
}

.pan-row {
  display: flex; align-items: center; gap: 10px;
  margin-top: 12px;
}
.pan-row__lbl { color: var(--muted); font-size: 11px; font-weight: 700; width: 12px; text-align: center; }
.range--pan {
  flex: 1; -webkit-appearance: none; appearance: none;
  height: 30px;
  background: transparent;
}
.range--pan::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--surface-2);
  border-radius: 999px;
}
.range--pan::-moz-range-track { height: 4px; background: var(--surface-2); border-radius: 999px; }
.range--pan::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px; height: 22px;
  background: var(--text); border-radius: 50%;
  margin-top: -9px;
  border: 2px solid var(--primary);
}
.range--pan::-moz-range-thumb {
  width: 22px; height: 22px;
  background: var(--text); border-radius: 50%;
  border: 2px solid var(--primary);
}

/* Pager horizontal com snap — uma "página" por viewport, sem scroll vertical */
.channels-pager {
  flex: 1;
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  min-height: 0;
}
.channels-pager.console {
  scroll-snap-type: none;  /* console: livre, sem snap por página */
  gap: 6px;
  padding: 0 var(--pad);
}
.page {
  flex: 0 0 100%;
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), minmax(0, 1fr));
  grid-template-rows: repeat(var(--rows, 3), minmax(0, 1fr));
  gap: 8px;
  padding: 0 var(--pad);
  scroll-snap-align: start;
  min-width: 100%;
}
@media (min-width: 720px) { .page { gap: 12px; } }

/* Página master — ocupa viewport inteira, fader gigante e ajuste fino destacado */
.page--master {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--pad);
  flex: 0 0 100%;
  scroll-snap-align: start;
}
.page--master .master {
  width: 100%;
  max-width: 540px;
  margin: 0;
  padding: 28px 24px;
  border-radius: 18px;
}
.page--master .master__db {
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: -0.03em;
}
.page--master .master__lbl { font-size: 14px; }
.page--master .master .mutebtn { width: 56px; height: 56px; font-size: 19px; }
.page--master .master .range--h { height: 64px; }
.page--master .master .range--h::-webkit-slider-runnable-track { height: 16px; }
.page--master .master .range--h::-webkit-slider-thumb {
  width: 44px; height: 44px; margin-top: -14px; border-width: 5px;
}
.page--master .fine-row { margin-top: 16px; gap: 8px; }
.page--master .finebtn { padding: 12px 16px; font-size: 15px; min-width: 56px; }
.page--master .finebtn--small { padding: 10px 14px; min-width: 48px; }
.page--master .pan-row { margin-top: 16px; }

/* Em console: master vira primeira "coluna" larga ao invés de página inteira */
body.layout-console .page--master {
  flex: 0 0 220px;
  padding: 0;
}
body.layout-console .page--master .master {
  padding: 14px 12px;
  border-radius: 12px;
}
body.layout-console .page--master .master__db { font-size: 24px; }
body.layout-console .page--master .master__lbl { display: none; }
body.layout-console .page--master .range--h { height: 36px; }
body.layout-console .page--master .range--h::-webkit-slider-runnable-track { height: 10px; }
body.layout-console .page--master .range--h::-webkit-slider-thumb { width: 28px; height: 28px; margin-top: -9px; border-width: 3px; }
body.layout-console .page--master .finebtn { padding: 6px 8px; min-width: 36px; font-size: 12px; }
body.layout-console .page--master .finebtn--small { padding: 4px 6px; min-width: 30px; font-size: 13px; }
body.layout-console .page--master .pan-row { display: none; }

.pager-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 8px 0 4px;
  flex-shrink: 0;
}
.pager-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--surface-2);
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  padding: 0;
}
.pager-dot.active {
  background: var(--primary);
  width: 24px;
  border-radius: 999px;
}
.pager-dot--master {
  background: rgba(245,158,11,0.4);
  /* Marca visual do master: ícone estrelinha */
}
.pager-dot--master::after {
  content: '★';
  position: absolute;
  font-size: 10px;
  color: var(--text);
  margin: -3px 0 0 -3px;
}
.pager-dot { position: relative; }
.pager-dot--master.active { background: var(--warn); }

/* Setas (visíveis em desktop) */
.page-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 22px;
  font-weight: 700;
  cursor: pointer;
  z-index: 5;
  opacity: 0.85;
  display: none;
}
.page-arrow:active { transform: translateY(-50%) scale(0.95); }
.page-arrow--prev { left: 4px; }
.page-arrow--next { right: 4px; }
@media (min-width: 720px) and (hover: hover) {
  .page-arrow { display: flex; align-items: center; justify-content: center; }
}

.channel {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 8px 10px;
  display: flex; flex-direction: column; align-items: stretch;
  gap: 4px;
  min-height: 0;
  overflow: hidden;
  transition: opacity 0.2s;
}
.channel::before {
  content: '';
  position: absolute; left: 0; right: 0; top: 0;
  height: 4px;
  background: var(--ch-color, var(--border));
}
.channel.is-muted { opacity: 0.55; }
.channel.is-muted .channel__name,
.channel.is-muted .channel__db { text-decoration: line-through; }

.channel__name {
  font-size: 13px; font-weight: 700; text-align: center;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  padding: 0 4px;
}
.channel__num {
  font-size: 10px; color: var(--muted);
  text-align: center; font-weight: 600; letter-spacing: 0.06em;
}
.channel__pan {
  display: flex; align-items: center; gap: 4px;
  padding: 0 2px;
}
.channel__pan-input { flex: 1; -webkit-appearance: none; appearance: none; height: 22px; background: transparent; }
.channel__pan-input::-webkit-slider-runnable-track { height: 3px; background: var(--surface-2); border-radius: 999px; }
.channel__pan-input::-moz-range-track { height: 3px; background: var(--surface-2); border-radius: 999px; }
.channel__pan-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  background: var(--ch-color, var(--text)); border-radius: 50%; margin-top: -7px;
  border: 1.5px solid var(--text);
}
.channel__pan-input::-moz-range-thumb {
  width: 16px; height: 16px;
  background: var(--ch-color, var(--text)); border-radius: 50%; border: 1.5px solid var(--text);
}
.channel__pan-lbl { color: var(--muted); font-size: 9px; font-weight: 700; }

/* Fader vertical: usar transform em todos browsers — comportamento previsível.
   Após rotate(-90deg), 'width' vira altura visual e 'height' vira largura.
   --fader-len é setado por JS (tuneFaderLen) baseado na altura do wrap. */
.channel__fader-wrap {
  flex: 1;
  display: flex; justify-content: center; align-items: center;
  min-height: 0;
  overflow: hidden;
}
.channel__fader {
  -webkit-appearance: none; appearance: none;
  width: var(--fader-len, 140px);
  height: 28px;
  background: transparent;
  transform: rotate(-90deg);
  cursor: pointer;
  margin: 0; padding: 0;
}
.channel__fader::-webkit-slider-runnable-track {
  height: 8px;
  background: var(--surface-2);
  border-radius: 999px;
}
.channel__fader::-moz-range-track {
  height: 8px;
  background: var(--surface-2);
  border-radius: 999px;
}
.channel__fader::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 28px; height: 28px;
  background: white; border-radius: 50%;
  margin-top: -10px;     /* (28-8)/2 — centraliza vertical sobre track */
  border: 3px solid var(--ch-color, var(--primary));
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}
.channel__fader::-moz-range-thumb {
  width: 28px; height: 28px;
  background: white; border-radius: 50%;
  border: 3px solid var(--ch-color, var(--primary));
}

/* Toggle global de pan — quando setting está off, esconde linhas de pan */
body.no-pan .pan-row,
body.no-pan .channel__pan { display: none; }

/* ===================== LAYOUT CONSOLE (mesa de som) ===================== */
/* Faders verticais altos lado a lado, scroll horizontal livre.
   Em landscape no celular fica como mesa real. */
body.layout-console .channel {
  flex: 0 0 86px;
  height: 100%;
  scroll-snap-align: start;
  padding: 12px 6px 10px;
}
body.layout-console .channel__fader-wrap { flex: 1; min-height: 0; }
body.layout-console .channel__fader::-webkit-slider-runnable-track { height: 10px; }
body.layout-console .channel__fader::-webkit-slider-thumb {
  width: 32px; height: 32px; margin-top: -11px;
}
body.layout-console .channel__name {
  font-size: 11px;
  white-space: normal;
  line-height: 1.15;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  display: -webkit-box;
  overflow: hidden;
  min-height: 26px;
}
body.layout-console .channel__db { font-size: 11px; }
body.layout-console .mutebtn { width: 32px; height: 32px; font-size: 13px; }

/* Em landscape de celular, comprime tudo agressivamente:
   master vira faixa horizontal compacta, channels ganham espaço */
@media (orientation: landscape) and (max-height: 540px) {
  /* Header */
  .mix__head { padding: 10px 16px 4px; gap: 10px; }
  .mix__title h1 { font-size: 16px; }
  .mix__sub { display: none; }
  .iconbtn { width: 38px; height: 38px; font-size: 18px; }

  /* Master ultra-compacto: label some, pan some, fader mais fino */
  .master {
    padding: 8px 14px;
    margin: 0 var(--pad) 6px;
    border-radius: 10px;
  }
  .master__row { gap: 10px; align-items: center; }
  .master__info { display: flex; align-items: center; gap: 10px; }
  .master__lbl { display: none; }
  .master__db { font-size: 18px; margin: 0; }
  .master .mutebtn { width: 34px; height: 34px; font-size: 13px; }
  .master .fader-h { margin-top: 4px; }
  .master .range--h { height: 36px; }
  .master .range--h::-webkit-slider-runnable-track { height: 10px; }
  .master .range--h::-webkit-slider-thumb {
    width: 28px; height: 28px; margin-top: -9px; border-width: 3px;
  }
  .master .pan-row { display: none; }  /* pan do master some pra economizar */
  .master .fine-row { margin-top: 6px; gap: 4px; }
  .master .finebtn { padding: 6px 8px; font-size: 12px; min-width: 36px; }
  .master .finebtn--small { padding: 4px 6px; min-width: 30px; font-size: 13px; }

  /* Página master em landscape — fader gigante, dB grande, ainda dá pra fine */
  .page--master .master { padding: 14px 18px; max-width: 100%; }
  .page--master .master__db { font-size: 32px; }
  .page--master .master__lbl { font-size: 11px; display: block; }
  .page--master .master .range--h { height: 48px; }
  .page--master .master .mutebtn { width: 44px; height: 44px; font-size: 16px; }
  .page--master .fine-row { margin-top: 10px; }
  .page--master .finebtn { padding: 10px 14px; font-size: 13px; min-width: 50px; }

  /* Channels: cards mais comprimidos na altura, mais finos na largura */
  .channel { padding: 6px 4px 4px; gap: 2px; }
  .channel__num { font-size: 9px; }
  .channel__name { font-size: 11px; padding: 0 2px; }
  .channel__pan { padding: 0; }
  .channel__pan-input { height: 18px; }
  .channel__db { font-size: 11px; margin-top: 0; }
  .mutebtn { width: 28px; height: 28px; font-size: 11px; }

  /* Pager dots ainda menores */
  .pager-dots { padding: 4px 0 2px; }
  .pager-dot { width: 6px; height: 6px; }
  .pager-dot.active { width: 18px; }

  body.layout-console .channel { flex-basis: 70px; padding: 8px 3px 6px; }
}

/* Landscape muito pequeno (celular tipo iPhone SE deitado) */
@media (orientation: landscape) and (max-height: 380px) {
  .master__db { font-size: 16px; }
  .channel__pan { display: none; }  /* pan dos channels também some */
  .channel { padding: 4px 3px 3px; }
  .channel__num { display: none; }
  .channel__name { font-size: 10px; }
}

/* Botão layout-toggle pulsa cor pra dar dica visual */
#layout-toggle.is-console { background: var(--primary); color: white; border-color: var(--primary); }

.channel__db {
  text-align: center;
  font-size: 13px; font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-top: 2px;
}

.channel__bottom { display: flex; justify-content: center; }

/* Botões de ajuste fino (+/−) ------------------- */
.fine-row {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 10px;
}
.finebtn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  font-weight: 700;
  font-size: 13px;
  font-family: inherit;
  padding: 8px 12px;
  min-width: 44px;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
  -webkit-user-select: none;
  user-select: none;
  touch-action: manipulation;
}
.finebtn:active { background: var(--primary); border-color: var(--primary); transform: scale(0.96); }
.finebtn--small { padding: 6px 10px; min-width: 36px; font-size: 14px; }

.channel__bottom {
  display: flex; align-items: center; justify-content: center;
  gap: 4px;
}
.channel__bottom .finebtn--small {
  padding: 4px 0;
  min-width: 28px;
  height: 28px;
  font-size: 13px;
}

/* Master visualmente separado: borda mais marcada e gradiente mais forte */
.master {
  background: linear-gradient(135deg, rgba(59,130,246,0.22), rgba(59,130,246,0.06));
  border: 2px solid rgba(59,130,246,0.5);
  box-shadow: 0 8px 24px rgba(59,130,246,0.15), 0 8px 24px rgba(0,0,0,0.25);
}

/* Mute button ------------------------------- */
.mutebtn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  color: var(--muted);
  font-weight: 800; font-size: 15px;
  cursor: pointer; flex-shrink: 0;
  transition: all 0.15s;
}
.mutebtn:active { transform: scale(0.92); }
.mutebtn.is-on {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
  box-shadow: 0 0 12px rgba(239,68,68,0.5);
}
.master .mutebtn { width: 48px; height: 48px; font-size: 17px; }

/* Channel colors (XR18 enum 0-7) -------------- */
.color-0 { --ch-color: #4b5775; }
.color-1 { --ch-color: var(--red-c); }
.color-2 { --ch-color: var(--green-c); }
.color-3 { --ch-color: var(--yellow); }
.color-4 { --ch-color: var(--blue-c); }
.color-5 { --ch-color: var(--magenta); }
.color-6 { --ch-color: var(--cyan); }
.color-7 { --ch-color: var(--white-c); }

/* Erro --------------------------------- */
.error {
  background: rgba(239,68,68,0.18);
  border: 1px solid var(--danger);
  border-radius: var(--radius);
  padding: 14px;
  color: #fecaca;
  margin-top: 14px;
}

/* ===================== ADMIN PAGE ===================== */
.admin-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 0 var(--pad) 14px;
}
.admin-section h3 { margin: 0 0 10px; font-size: 16px; }
.admin-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.admin-row label { font-size: 13px; color: var(--muted); min-width: 90px; }
.admin-row input[type=text] {
  flex: 1; min-width: 160px;
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 10px 12px; font-size: 14px;
}
.channel-checks {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 6px;
}
.channel-check {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px; font-size: 13px;
  cursor: pointer; user-select: none;
}
.channel-check input { margin: 0; width: 16px; height: 16px; }
.channel-check.has-color::before {
  content: ''; width: 10px; height: 10px;
  border-radius: 50%; background: var(--ch-color, var(--border));
}
.btn {
  background: var(--primary); color: #fff;
  border: none; border-radius: 10px;
  padding: 10px 16px; font-weight: 600; cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, transform 0.1s;
}
.btn:active { background: #1d4ed8; transform: scale(0.97); }
.btn--ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn--ghost:active { background: var(--surface-2); }