/* ============================================================
   Corvino Acordeon Web — UI inspirada na versão tablet do app
   Paleta inferida de CorvinoColors do home_screen.dart
   ============================================================ */

:root {
  --bg-outer: #0A0A0E;
  --bg-bass-1: #1E1E22;
  --bg-bass-2: #181818;
  --bg-bass-3: #1C1C20;
  --bg-bar-1: #1A1A1E;
  --bg-bar-2: #141416;
  --bg-kb-1: #0A0A0E;
  --bg-kb-2: #101014;
  --bg-kb-3: #141418;
  --border-app: #333338;
  --border-tab: rgba(218, 165, 32, 0.3);
  --gold: #DAA520;
  --gold-dark: #A07810;
  --gold-soft: rgba(218, 165, 32, 0.6);
  --cyan: #4DD0E1;
  --cyan-deep: #00838F;
  --bass-ref: #B71C1C;
  --bass-ref-glow: #D32F2F;
  --kb-white-top: #FAFAFA;
  --kb-white-mid: #ECECEC;
  --kb-white-bot: #C8C8C8;
  --kb-white-border: #888;
  --kb-black-top: #2A2A2E;
  --kb-black-bot: #0E0E12;
  /* Pearl gradients — branco perolado (mãe-de-pérola) */
  --pearl-r0-c: #FFFFFF;
  --pearl-r0-e: #C8C8CE;
  --pearl-r1-c: #FCFCFC;
  --pearl-r1-e: #C2C2C8;
  --pearl-r2-c: #F8F8F8;
  --pearl-r2-e: #BCBCC2;
  --pearl-r3-c: #F4F4F4;
  --pearl-r3-e: #B6B6BC;
  --pearl-r4-c: #F0F0F0;
  --pearl-r4-e: #B0B0B6;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg-outer);
  user-select: none;
  -webkit-user-select: none;
}

/* ===== SPLASH ===== */
#splash {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg-outer);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  transition: opacity 0.8s ease-out;
}
#splash.fade-out { opacity: 0; pointer-events: none; }
#splash-logo { width: min(40vw, 260px); height: auto; object-fit: contain; }
#splash-text { color: var(--gold); font-size: 1.1rem; font-weight: 600; letter-spacing: 4px; }

/* ===== ROTATION WARNING ===== */
#rotate-warning {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: var(--bg-outer);
  color: white;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  gap: 1rem;
}
#rotate-warning .rotate-icon { font-size: 3rem; }
@media (orientation: portrait) {
  #rotate-warning { display: flex; }
  #app, #splash { display: none !important; }
}
html.embedded #rotate-warning { display: none !important; }
html.embedded #app, html.embedded #splash { display: flex !important; }

.hidden { display: none !important; }

/* ===== APP CONTAINER (com borda arredondada estilo tablet) ===== */
#app {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg-outer);
  margin: 0;
  border-radius: 16px;
  border: 4px solid var(--border-app);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.7), 0 2px 6px rgba(0,0,0,0.4);
}

/* ===== TOOLBAR (mantida no topo, simplificada) ===== */
#toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 12px;
  background: linear-gradient(180deg, #15151A 0%, #0F0F12 100%);
  border-bottom: 1px solid var(--gold-soft);
  flex-shrink: 0;
  z-index: 10;
  height: 38px;
}

.toolbar-left { display: flex; align-items: center; gap: 8px; }
.toolbar-logo { height: 26px; width: auto; border-radius: 4px; }
.toolbar-title { color: var(--gold); font-weight: 700; font-size: 14px; letter-spacing: 2px; }
.toolbar-center, .toolbar-right { display: flex; align-items: center; gap: 4px; }

.tool-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border: 1px solid rgba(218,165,32,0.3);
  background: rgba(255,255,255,0.04);
  border-radius: 6px;
  cursor: pointer;
  color: #e0e0e0;
  font-size: 12px;
  transition: background 0.15s, border-color 0.15s;
}
.tool-btn:hover { background: rgba(218,165,32,0.15); border-color: var(--gold); }
.tool-btn.active { background: var(--gold); border-color: var(--gold); color: var(--bg-outer); }
.tool-icon { font-size: 15px; }
.tool-label { font-size: 11px; white-space: nowrap; }

/* ===== BASS SECTION ===== */
#bass-section {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  /* Reserva espaço vertical para os HUDs absolute-positioned não
     sobreporem as fileiras de baixo do bass-grid.
     Topo: 2 linhas (volume + transpose) ~72px + margem
     Base: 1 linha (ritmo/zoom/metro) ~40px + margem */
  padding: 78px 6px 52px;
  background: linear-gradient(180deg,
    var(--bg-bass-1) 0%,
    var(--bg-bass-2) 50%,
    var(--bg-bass-3) 100%);
  overflow: hidden;
}

/* logo desbotado no fundo da seção dos baixos */
#bass-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('../assets/images/logo-sem-fundo.png');
  background-position: center;
  background-repeat: no-repeat;
  background-size: 50% auto;
  opacity: 0.10;
  pointer-events: none;
}

#bass-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  position: relative;
  z-index: 1;
}

.bass-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* botão de baixo: gradiente radial pearl branco, com label visível */
.bass-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.4);
  cursor: pointer;
  touch-action: none;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1a1a1a;
  font-size: 11px;
  font-weight: 700;
  text-shadow: 0 1px 1px rgba(255,255,255,0.6);
  box-shadow:
    0 3px 8px rgba(0,0,0,0.6),
    inset 0 1px 2px rgba(255,255,255,0.7);
  transition: transform 0.05s ease;
}

.bass-btn:active { transform: scale(0.92); }

/* gradientes pearl por fileira (radial pra dar 3D) */
.bass-row[data-row="0"] .bass-btn {
  background: radial-gradient(circle at 30% 30%, var(--pearl-r0-c), var(--pearl-r0-e));
}
.bass-row[data-row="1"] .bass-btn {
  background: radial-gradient(circle at 30% 30%, var(--pearl-r1-c), var(--pearl-r1-e));
}
.bass-row[data-row="2"] .bass-btn {
  background: radial-gradient(circle at 30% 30%, var(--pearl-r2-c), var(--pearl-r2-e));
}
.bass-row[data-row="3"] .bass-btn {
  background: radial-gradient(circle at 30% 30%, var(--pearl-r3-c), var(--pearl-r3-e));
}
.bass-row[data-row="4"] .bass-btn {
  background: radial-gradient(circle at 30% 30%, var(--pearl-r4-c), var(--pearl-r4-e));
}

/* Marcador de referência do Dó/Mi — botão fica branco, ganha bolinha vermelha
   no canto (igual ao relevo táctil dos acordeons reais) */
.bass-btn.red-marker::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bass-ref-glow);
  box-shadow: 0 0 4px rgba(211,47,47,0.6);
}

/* Estado ativo (tocando) — cyan brilhante */
.bass-btn.active {
  background: radial-gradient(circle at 30% 30%, var(--cyan), var(--cyan-deep)) !important;
  color: #fff;
  box-shadow:
    0 0 12px rgba(77,208,225,0.7),
    0 3px 8px rgba(0,0,0,0.7),
    inset 0 1px 2px rgba(255,255,255,0.3);
}

/* ===== HUD CORNERS (volume + transpose) ===== */
.hud {
  position: absolute;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: 'Segoe UI', Roboto, sans-serif;
  /* Todas as linhas ocupam a mesma largura (definida pelo item mais largo) */
  align-items: stretch;
}
.hud-tl { top: 6px; left: 6px; }
.hud-tr { top: 6px; right: 6px; }
.hud-bl { bottom: 6px; left: 6px; }
.hud-br { bottom: 6px; right: 6px; }
/* Centro inferior — entre metrônomo (esquerda) e zoom (direita) */
.hud-bc {
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  flex-direction: row;
  align-items: center;
  gap: 6px;
}

.hud-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  padding: 3px 6px;
  background: rgba(10,10,14,0.55);
  border: 1px solid rgba(218,165,32,0.25);
  border-radius: 6px;
  backdrop-filter: blur(4px);
}
/* Seletor de ritmo ocupa toda a largura da sua linha */
.hud-row > .rhythm-selector { flex: 1; justify-content: center; }
/* Play/stop pequeno à direita do seletor */
.hud-row > .rhythm-play { flex-shrink: 0; }

.hud-icon {
  color: var(--gold);
  font-size: 14px;
  width: 16px;
  text-align: center;
}

.hud-value {
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  min-width: 24px;
  text-align: center;
  text-shadow: 0 1px 2px rgba(0,0,0,0.8);
}

.mini-btn {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  background: rgba(218,165,32,0.12);
  border: 1px solid rgba(218,165,32,0.4);
  color: var(--gold);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  padding: 0;
  transition: background 0.1s;
}
.mini-btn:hover { background: rgba(218,165,32,0.25); }
.mini-btn:active { transform: scale(0.92); }

/* Zoom controls (A+, ⟲, A-) — canto inferior direito, horizontal */
/* Container que agrupa kbd-toggle (em cima) + zoom-controls (em baixo)
   no canto inferior direito da bass-section. Garante que o botão de
   ativar teclas do computador NÃO some quando o app é redimensionado. */
.bottom-right-controls {
  position: absolute;
  right: 6px;
  bottom: 6px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  z-index: 5;
}

.zoom-controls {
  display: flex;
  flex-direction: row;
  gap: 3px;
  padding: 2px 5px;
  background: rgba(10,10,14,0.55);
  border: 1px solid rgba(218,165,32,0.25);
  border-radius: 5px;
  backdrop-filter: blur(4px);
}

.zoom-btn {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  background: rgba(10,10,14,0.7);
  border: 1px solid rgba(218,165,32,0.4);
  color: var(--gold);
  cursor: pointer;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  transition: background 0.1s;
}
.zoom-btn:hover { background: rgba(218,165,32,0.18); }
.zoom-btn:active { transform: scale(0.92); }

#scale-feedback {
  position: absolute;
  top: 50px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 14px;
  background: rgba(10,10,14,0.92);
  border: 1px solid var(--gold-soft);
  border-radius: 12px;
  color: var(--gold);
  font-weight: 700;
  font-size: 14px;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
#scale-feedback.visible { opacity: 1; }

/* ===== FOLE DECORATIVO (separador) ===== */
#bellows-bar {
  height: 24px;
  background:
    repeating-linear-gradient(90deg,
      #1A1A1E 0px,
      #1A1A1E 6px,
      #2A2A30 6px,
      #2A2A30 8px),
    linear-gradient(180deg, #15151A, #0A0A0E);
  border-top: 1px solid var(--gold-soft);
  border-bottom: 1px solid var(--gold-soft);
  flex-shrink: 0;
}

/* ===== BARRA CENTRAL (Timbres + conexão + labels toggle) ===== */
#registers-bar {
  height: 50px;
  padding: 4px 8px;
  background: linear-gradient(180deg, var(--bg-bar-1), var(--bg-bar-2), var(--bg-bar-1));
  border-top: 1px solid var(--gold-soft);
  border-bottom: 1px solid var(--gold-soft);
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  flex-shrink: 0;
  position: relative; /* referência para register-tabs absoluta */
}

.conn-indicator {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 2px 4px;
  background: rgba(0,0,0,0.3);
  border-radius: 3px;
}
.conn-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bass-ref);
  box-shadow: 0 0 4px var(--bass-ref);
}
.conn-indicator.connected .conn-dot {
  background: #66BB6A;
  box-shadow: 0 0 4px #66BB6A;
}
.conn-label {
  color: rgba(255,255,255,0.7);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: capitalize;
}

/* Seletor de Ritmo (Guarânia ∨) — alinhado aos outros HUDs */
.rhythm-selector {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 2px 6px;
  height: 22px;
  background: linear-gradient(180deg, #2A2A30 0%, var(--bg-bar-1) 100%);
  border: 1px solid var(--gold-soft);
  border-radius: 4px;
  cursor: pointer;
  color: var(--gold);
  font-size: 10px;
  font-weight: 600;
}
.rhythm-selector .rhythm-icon { font-size: 11px; }
.rhythm-selector .rhythm-name { letter-spacing: 0.3px; min-width: 56px; text-align: center; }
.rhythm-selector .rhythm-chevron { font-size: 8px; opacity: 0.7; }
.rhythm-selector:hover { border-color: var(--gold); }
.rhythm-selector.playing {
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold-dark) 100%);
  color: var(--bg-outer);
  border-color: var(--gold);
  box-shadow: 0 0 8px rgba(218,165,32,0.5);
}
.rhythm-selector.playing .rhythm-icon,
.rhythm-selector.playing .rhythm-chevron { color: var(--bg-outer); }

/* Botão Play/Stop do ritmo — mesma altura dos outros botões da coluna */
.rhythm-play {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background: linear-gradient(180deg, #2A2A30 0%, var(--bg-bar-1) 100%);
  border: 1px solid var(--gold-soft);
  color: var(--gold);
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: all 0.1s;
  flex-shrink: 0;
}
.rhythm-play:hover { border-color: var(--gold); background: rgba(218,165,32,0.18); }
.rhythm-play:active { transform: scale(0.92); }
.rhythm-play.playing {
  background: linear-gradient(180deg, var(--gold), var(--gold-dark));
  color: var(--bg-outer);
  border-color: var(--gold);
  box-shadow: 0 0 8px rgba(218,165,32,0.5);
}

/* Controles de volume/velocidade do ritmo — inline na barra central */
.rhythm-control {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 2px 5px;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(218,165,32,0.25);
  border-radius: 4px;
}
.rhythm-control .hud-value { min-width: 28px; font-size: 11px; }
.rhythm-control .hud-icon { font-size: 12px; }

.rhythm-dropdown {
  z-index: 1000;
  background: rgba(15,15,18,0.97);
  border: 1px solid var(--gold-soft);
  border-radius: 8px;
  padding: 6px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.7);
  display: flex;
  flex-direction: column;
  gap: 2px;
  backdrop-filter: blur(8px);
}
.rhythm-item {
  padding: 6px 12px;
  border-radius: 4px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.1s;
}
.rhythm-item:hover { background: rgba(218,165,32,0.18); }
.rhythm-item.selected { background: rgba(218,165,32,0.3); }
.rhythm-item.stop {
  color: var(--bass-ref-glow);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: 8px;
  margin-bottom: 2px;
}

.app-version {
  color: rgba(255,255,255,0.3);
  font-size: 9px;
  margin: 0 4px;
}

.register-tabs {
  display: flex;
  gap: 4px;
  align-items: center;
  justify-content: center;
  /* Centralizado no meio exato da barra, independente do tamanho dos lados */
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.register-tab {
  padding: 4px 10px;
  border-radius: 4px;
  background: linear-gradient(180deg, #2A2A2E, var(--bg-bar-1));
  border: 1px solid rgba(218,165,32,0.3);
  color: var(--gold);
  cursor: pointer;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: all 0.1s;
  min-width: 48px;
}

.register-tab:hover { border-color: var(--gold); }
.register-tab.selected {
  background: linear-gradient(180deg, var(--gold), var(--gold-dark));
  border-color: var(--gold);
  color: var(--bg-outer);
  box-shadow: 0 1px 4px rgba(218,165,32,0.4);
}

.register-dots {
  display: flex;
  gap: 2px;
}

.register-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  border: 0.5px solid #555;
}
.register-dot.on {
  background: var(--gold);
  border-color: transparent;
}
.register-tab.selected .register-dot.on {
  background: var(--bg-outer);
}
.register-tab.selected .register-dot:not(.on) {
  border-color: rgba(0,0,0,0.4);
}

/* Estado "carregando" — feedback visual enquanto o soundfont baixa
   (importante pra basson de 59MB). Pulsa pra indicar atividade. */
.register-tab.loading {
  animation: register-tab-pulse 1.2s ease-in-out infinite;
  cursor: wait;
}
.register-tab.loading::after {
  content: '⏳';
  font-size: 9px;
  margin-top: 1px;
}
@keyframes register-tab-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}

/* Estado "desabilitado" — outros tabs não clicáveis enquanto um carrega */
.register-tab.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Grupo dos 3 toggles fixos (🎹 tecla PC, 🏷️ etiqueta, ☰ menu).
   margin-left: auto empurra o grupo INTEIRO pra direita da registers-bar. */
.bar-toggles {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
}

.label-toggle {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  border: 1px solid rgba(218,165,32,0.4);
  background: rgba(0,0,0,0.4);
  color: var(--gold);
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.label-toggle.on { background: rgba(218,165,32,0.25); }

/* ===== KEYBOARD SECTION ===== */
#piano-section {
  flex: 0 0 auto;
  height: 38vh;
  min-height: 140px;
  overflow: hidden;
  padding: 4px 4px 6px 4px;
  background: linear-gradient(180deg, var(--bg-kb-1) 0%, var(--bg-kb-2) 5%, var(--bg-kb-3) 100%);
  border-top: 2px solid var(--gold-soft);
  box-shadow: inset 0 4px 8px rgba(0,0,0,0.5);
}

#piano-container {
  display: flex;
  height: 100%;
  position: relative;
  overflow-x: auto;
}

.key {
  touch-action: none;
  cursor: pointer;
  border-radius: 0 0 6px 6px;
  transition: filter 0.05s;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 12px;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
}

.key-white {
  height: 100%;
  background: linear-gradient(180deg,
    var(--kb-white-top) 0%,
    var(--kb-white-mid) 30%,
    var(--kb-white-bot) 80%,
    #A8A8B0 100%);
  border: 1px solid var(--kb-white-border);
  z-index: 1;
  color: #1a1a1a;
  width: 36px;
  margin-right: 2px;
  box-shadow: 0 3px 5px rgba(0,0,0,0.3);
}
.key-white:active, .key-white.active {
  background: linear-gradient(180deg, var(--cyan), var(--cyan-deep)) !important;
  color: #fff;
  filter: brightness(1.1);
}

.key-black {
  height: 60%;
  width: 22px;
  background: linear-gradient(180deg,
    var(--kb-black-top) 0%,
    #181820 60%,
    var(--kb-black-bot) 100%);
  position: absolute;
  top: 0;
  z-index: 2;
  box-shadow: 0 5px 8px rgba(0,0,0,0.6);
  border-radius: 0 0 4px 4px;
  border: 0.5px solid rgba(218,165,32,0.2);
  color: #fff;
  font-size: 10px;
  padding-bottom: 6px;
}
.key-black:active, .key-black.active {
  background: linear-gradient(180deg, var(--cyan), var(--cyan-deep)) !important;
  color: #fff;
}

/* labels visíveis controladas via class */
html:not(.show-labels) .bass-btn { color: transparent; text-shadow: none; }
html:not(.show-labels) .key { color: transparent; }

/* ===== SETTINGS DIALOG (mantido) ===== */
dialog {
  border: none;
  border-radius: 12px;
  padding: 0;
  width: min(90vw, 600px);
  max-height: 80vh;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  background: white;
}
dialog::backdrop { background: rgba(0,0,0,0.5); }

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid #eee;
}
.dialog-header h2 { font-size: 18px; color: #000; margin: 0; }
#btn-close-dialog {
  background: none; border: none; font-size: 24px;
  cursor: pointer; color: #666; padding: 0 4px;
}

#device-list { padding: 16px 20px; overflow-y: auto; max-height: 60vh; }
.no-devices { color: #888; text-align: center; padding: 20px; }
.device-item { border-bottom: 1px solid #eee; padding: 12px 0; }
.device-item:last-child { border-bottom: none; }
.device-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.device-name { font-size: 16px; font-weight: 600; color: #000; }
.device-info { font-size: 12px; color: #888; margin-top: 2px; }
.btn-connect {
  padding: 6px 16px; border: none; border-radius: 6px; cursor: pointer;
  font-size: 14px; color: white; background: #2196F3; white-space: nowrap;
}
.btn-connect.connected { background: #f44336; }

.volume-control { display: flex; align-items: center; gap: 8px; padding: 10px 0 4px; }
.volume-control label { font-size: 13px; color: #333; white-space: nowrap; }
.volume-control input[type="range"] { flex: 1; accent-color: #333; }
.volume-control .volume-value { font-size: 13px; color: #333; min-width: 28px; text-align: right; }

#midi-status { padding: 8px 20px 16px; font-size: 12px; color: #999; text-align: center; }

/* ===== PANELS (timbre/groove/lessons dropdowns) ===== */
.panel {
  position: fixed;
  top: 42px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  background: rgba(20, 20, 24, 0.96);
  backdrop-filter: blur(12px);
  border: 1px solid var(--gold-soft);
  border-radius: 10px;
  min-width: 260px;
  max-width: 90vw;
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
}
.panel-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 14px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.panel-header h3 { color: var(--gold); font-size: 14px; font-weight: 600; margin: 0; }
.panel-close { background: none; border: none; color: #888; font-size: 20px; cursor: pointer; padding: 0 4px; }
.panel-body { padding: 8px; max-height: 50vh; overflow-y: auto; }
.panel-item {
  display: flex; align-items: center; gap: 10px; padding: 7px 10px;
  border-radius: 6px; cursor: pointer; color: #ccc; font-size: 13px;
  transition: background 0.1s; border: none; background: none;
  width: 100%; text-align: left;
}
.panel-item:hover { background: rgba(255,255,255,0.08); }
.panel-item.selected { background: rgba(218, 165, 32, 0.18); color: var(--gold); }
.panel-item.playing { background: rgba(33, 150, 243, 0.2); color: #64b5f6; }
.panel-item-icon { font-size: 18px; }
.panel-item-name { flex: 1; }
.panel-item-meta { font-size: 10px; color: #888; }
.panel-item-action {
  padding: 3px 8px; border-radius: 4px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.05);
  color: #ccc; font-size: 11px; cursor: pointer;
}
.panel-item-action:hover { background: rgba(255,255,255,0.12); }
.panel-item-action.stop { border-color: #f44336; color: #f44336; }
.difficulty { color: var(--gold); font-size: 11px; letter-spacing: 1px; }

/* ===== RESPONSIVE ===== */
@media (min-width: 1200px) {
  .bass-btn { width: 40px; height: 40px; font-size: 12px; }
  .bass-row { gap: 14px; }
  #bass-grid { gap: 8px; }
  .key-white { width: 44px; }
  .key-black { width: 28px; }
}

/* Modo compacto — quando o iframe é estreito (curso, layout 460px) */
@media (max-width: 600px) {
  /* Bass buttons */
  .bass-btn { width: 28px; height: 28px; font-size: 9px; }
  .bass-row { gap: 8px; }
  #bass-grid { gap: 4px; }

  /* Piano keys */
  .key-white { width: 30px; padding-bottom: 4px; font-size: 9px; }
  .key-black { width: 20px; padding-bottom: 3px; font-size: 8px; }

  /* Registers (timbre) — fonte menor pra caber GIULIETTI e ACCORDION completos */
  .register-tab {
    font-size: 8px;
    padding: 3px 5px;
    min-width: 36px;
    letter-spacing: 0.3px;
    white-space: nowrap;
  }
  #registers-bar { height: 38px; }

  /* HUDs (volume, transpose, ritmo, metrônomo) — bem menores pra não cobrir os baixos */
  .hud { gap: 3px; }
  .hud-row { gap: 2px; padding: 1px 4px; }
  .mini-btn { width: 18px; height: 18px; font-size: 11px; }
  .hud-icon { font-size: 11px; width: 13px; }
  .hud-value { font-size: 10px; min-width: 20px; }
  .hud-tl, .hud-tr { top: 4px; }
  .hud-tl { left: 4px; }
  .hud-tr { right: 4px; }
  .hud-bl, .hud-br { bottom: 4px; }
  .hud-bl { left: 4px; }
  .hud-br { right: 4px; }

  /* Bass section: menos padding já que os HUDs ficaram menores */
  #bass-section { padding: 56px 4px 38px; }

  /* Rhythm selector compacto */
  .rhythm-name { font-size: 10px; }
  .rhythm-icon { font-size: 11px; }
}

@media (max-height: 600px) {
  #bass-section { padding: 50px 6px 36px; }
  .key-white { width: 32px; padding-bottom: 6px; font-size: 10px; }
  .key-black { width: 22px; padding-bottom: 4px; font-size: 9px; }
  #piano-section { height: 38vh; }
  #registers-bar { height: 42px; }
  .register-tab { font-size: 9px; padding: 3px 8px; min-width: 40px; }
}

/* ===== KEYBOARD INPUT (teclado do computador) =====
   O botão fica DENTRO do registers-bar, ao lado do label-toggle (mostrar
   notas) e do ui-toggle (esconder/mostrar HUDs). Compartilha o estilo
   da .label-toggle. Quando "on" (ativo), recebe destaque dourado. */
#kbd-toggle.label-toggle.on { background: rgba(218,165,32,0.32); }

/* ===== APP MODE TOGGLE + PC KEYBOARD VIEW =====
   Modo "acordeon" (default): mostra bass-section + piano-section, esconde
   pc-keyboard-section. Modo "pc": inverso — pc-keyboard-section ocupa o
   lugar dos bass+piano. body recebe a classe app-mode-acordeon ou app-mode-pc. */

/* Modo Acordeon (default) — esconde os 2 containers do PC keyboard */
body.app-mode-acordeon #pc-bass-section,
body.app-mode-acordeon #pc-md-section { display: none; }

/* Modo PC — esconde só os botões/teclas reais do acordeon (bass-grid +
   piano-container). Tudo o resto (HUDs, registers-bar, zoom-controls,
   bellows-bar) FICA visível. Os 2 SVGs do PC keyboard ocupam o lugar:
   - pc-bass-section dentro de #bass-section (substitui bass-grid)
   - pc-md-section dentro de #piano-section (substitui piano-container) */
body.app-mode-pc #bass-grid,
body.app-mode-pc #piano-container { display: none; }
body.app-mode-pc #pc-bass-section,
body.app-mode-pc #pc-md-section { display: flex; }

/* No modo PC, força bass-section a respeitar a altura disponível pra
   evitar que o pc-bass-section vaze pros vizinhos (registers/bellows). */
body.app-mode-pc #bass-section { overflow: hidden; }

/* PC bass: position:absolute no modo PC pra ocupar 100% do bass-section
   sem influenciar a altura calculada pelo flexbox (que estava forçando
   esticar o pai). */
#pc-bass-section {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 4px 160px;
  overflow: hidden;
}
body.app-mode-pc #pc-bass-section {
  display: flex;
  position: absolute;
  inset: 0;
  z-index: 1;  /* abaixo dos HUDs (z:5) e do scale-feedback */
}
#pc-bass-section .pc-kbd-svg {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  aspect-ratio: 280 / 210;
}

/* Piano-section: position relative pra ancorar o .hud-tr quando movido
   pra cá no modo PC. Altura aumentada no modo PC pra dar mais espaço
   pro PC keyboard MD ficar com teclas grandes. */
#piano-section { position: relative; }
body.app-mode-pc #piano-section { flex: 0 0 40vh; min-height: 170px; }

/* No modo PC, força piano-section a respeitar altura. */
body.app-mode-pc #piano-section { overflow: hidden; }

/* PC md: position:absolute pra cobrir 100% do piano-section. */
#pc-md-section {
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2px 130px;
  overflow: hidden;
}
body.app-mode-pc #pc-md-section {
  display: flex;
  position: absolute;
  inset: 0;
  z-index: 1;
}
#pc-md-section .pc-kbd-svg {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  aspect-ratio: 340 / 105;
}

.pc-kbd-svg {
  width: 100%;
  height: 100%;
  max-width: 1100px;
  max-height: 100%;
}

/* Cores das teclas por kind. Cada .pc-key tem um <rect> filho que recebe
   a cor de fundo + borda. Os .pc-letter são as letras grandes do meio
   (Q W A S G H...) e .pc-label é a sub-legenda (Fá fund, Dó M, etc.). */
.pc-key rect {
  transition: fill 0.08s, filter 0.08s;
}
.pc-letter {
  font-size: 13px;
  font-weight: 700;
  text-anchor: middle;
  font-family: monospace;
}
.pc-label {
  font-size: 7px;
  text-anchor: middle;
}
.pc-letter-empty {
  font-size: 11px;
  text-anchor: middle;
  fill: #555;
  font-family: monospace;
}

/* Contrabaixos (linha 1, vermelho) */
.pc-key[data-kind="cbx"] rect { fill: rgba(217,74,74,0.35); stroke: #d94a4a; stroke-width: 1.5; }
.pc-key[data-kind="cbx"] .pc-letter,
.pc-key[data-kind="cbx"] .pc-label { fill: #ff9090; }

/* Fundamentais (Q W E R, azul) */
.pc-key[data-kind="fund"] rect { fill: rgba(110,160,200,0.35); stroke: #5a8acc; stroke-width: 1.5; }
.pc-key[data-kind="fund"] .pc-letter,
.pc-key[data-kind="fund"] .pc-label { fill: #a8c8ec; }

/* Acordes maiores (A S D F, verde) */
.pc-key[data-kind="maj"] rect { fill: rgba(140,200,140,0.35); stroke: #5ab45a; stroke-width: 1.5; }
.pc-key[data-kind="maj"] .pc-letter,
.pc-key[data-kind="maj"] .pc-label { fill: #90d090; }

/* Acordes menores (Z X C V, roxo) */
.pc-key[data-kind="min"] rect { fill: rgba(200,140,200,0.35); stroke: #a065a0; stroke-width: 1.5; }
.pc-key[data-kind="min"] .pc-letter,
.pc-key[data-kind="min"] .pc-label { fill: #c890c8; }

/* Brancas MD (G H J K L Ç ~ ], dourado) */
.pc-key[data-kind="white"] rect { fill: rgba(218,165,32,0.45); stroke: var(--gold); stroke-width: 1.5; }
.pc-key[data-kind="white"] .pc-letter,
.pc-key[data-kind="white"] .pc-label { fill: var(--gold); }
.pc-key[data-kind="white"] .pc-label { font-size: 8px; }

/* Pretas MD (Y U O P [, laranja) */
.pc-key[data-kind="black"] rect { fill: #2a2025; stroke: #ff9060; stroke-width: 1.5; }
.pc-key[data-kind="black"] .pc-letter,
.pc-key[data-kind="black"] .pc-label { fill: #ff9060; }

/* Empty (sem função: 5-= T I ] B N M) */
.pc-key.pc-empty rect { fill: #1f1d20; stroke: #3a3537; stroke-width: 1; }

/* Estado ATIVO — quando aluno aperta a tecla física no PC */
.pc-key.active rect {
  fill: var(--gold);
  filter: drop-shadow(0 0 8px rgba(218,165,32,0.9))
          drop-shadow(0 0 14px rgba(218,165,32,0.6));
}
.pc-key.active .pc-letter,
.pc-key.active .pc-label { fill: #1a1618; }

/* Legenda da peça (no rodapé do SVG) — caixinhas coloridas iguais às teclas */
.pc-legend-cbx { fill: rgba(217,74,74,0.35); stroke: #d94a4a; }
.pc-legend-fund { fill: rgba(110,160,200,0.35); stroke: #5a8acc; }
.pc-legend-maj { fill: rgba(140,200,140,0.35); stroke: #5ab45a; }
.pc-legend-min { fill: rgba(200,140,200,0.35); stroke: #a065a0; }
.pc-legend-white { fill: rgba(218,165,32,0.45); stroke: var(--gold); }
.pc-legend-black { fill: #2a2025; stroke: #ff9060; }
.pc-legend-empty { fill: #1f1d20; stroke: #3a3537; }

/* Botão de toggle do app mode (no bar-toggles, ao lado do kbd-toggle) */
#app-mode-toggle.label-toggle { font-size: 14px; }
/* Quando modo = PC, destaca o botão pra mostrar que está ativo */
body.app-mode-pc #app-mode-toggle.label-toggle { background: rgba(218,165,32,0.32); }

/* ===== UI TOGGLE (esconder/mostrar HUDs) ===== */
/* Quando #app.hide-ui-controls, esconde os 4 grupos de comandos flutuantes,
   mantendo só o registers-bar (registros fixos + toggles essenciais). */
#app.hide-ui-controls .hud-tl,
#app.hide-ui-controls .hud-tr,
#app.hide-ui-controls .hud-bl,
#app.hide-ui-controls .bottom-right-controls {
  display: none;
}
#ui-toggle.label-toggle.on { background: rgba(218,165,32,0.32); }
.kbd-hint {
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  padding: 1px 5px;
  font-size: 11px;
  font-weight: 700;
  color: var(--gold);
  background: rgba(0, 0, 0, 0.78);
  border: 1px solid var(--gold);
  border-radius: 3px;
  pointer-events: none;
  display: none;
  z-index: 10;
  line-height: 1.2;
  font-family: 'Consolas', 'Monaco', monospace;
}
.key-black .kbd-hint {
  color: #fff;
  font-size: 10px;
  padding: 1px 4px;
}
/* Hint nos botões de baixo — mais compacto por serem redondos/pequenos */
.kbd-hint.kbd-hint-bass {
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 10px;
  padding: 0 3px;
  line-height: 1.1;
  background: rgba(0, 0, 0, 0.85);
}