/* ===== OPLabs Band Bus - ModGUI Styles ===== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-surface: #0f3460;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --accent-blue: #4fc3f7;
  --accent-orange: #ff8c00;
  --meter-green: #4caf50;
  --meter-yellow: #ff9800;
  --meter-red: #f44336;
  --mute-red: #e53935;
  --solo-yellow: #ffc107;
  --border-color: #2a2a4a;
  --channel-width: 80px;
  --meter-width: 28px;
  --master-meter-width: 36px;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 11px;
  user-select: none;
  -webkit-user-select: none;
}

/* ===== Bus Bridge Container ===== */
.bus-bridge {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  padding: 4px;
  gap: 3px;
  background: var(--bg-primary);
}

/* ===== 8-Channel Strip Row ===== */
.bus-channels {
  display: flex;
  gap: 3px;
  flex: 1;
  min-height: 0;
}

/* ===== Individual Channel Strip (Mini) ===== */
.ch-strip {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-radius: 4px;
  border: 1px solid var(--border-color);
  border-top: 2px solid var(--accent-orange);
  padding: 3px 2px;
  gap: 2px;
  align-items: center;
  position: relative;
}

.ch-strip.muted {
  border-top-color: var(--mute-red);
  opacity: 0.65;
}

.ch-strip-label {
  font-size: 9px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  text-align: center;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

/* Mini Mute Button */
.ch-strip-mute {
  width: 24px;
  height: 18px;
  border: 1px solid var(--border-color);
  border-radius: 3px;
  font-size: 9px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s ease;
  background: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1;
  padding: 0;
  flex-shrink: 0;
}

.ch-strip-mute:hover {
  filter: brightness(1.3);
}

.ch-strip-mute.active {
  background: var(--mute-red);
  color: #fff;
  border-color: var(--mute-red);
  box-shadow: 0 0 6px rgba(229, 57, 53, 0.35);
}

/* ===== Mini Level Meter ===== */
.ch-strip-meter {
  display: flex;
  gap: 1px;
  height: 100%;
  width: 100%;
  min-height: 20px;
  flex: 1;
}

.ch-strip-meter .meter-channel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  min-width: 0;
}

.ch-strip-meter .meter-label {
  font-size: 7px;
  font-weight: 700;
  color: var(--text-secondary);
  line-height: 1;
}

.ch-strip-meter .meter-track {
  flex: 1;
  width: 100%;
  min-width: 8px;
  background: var(--bg-primary);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.ch-strip-meter .meter-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0%;
  background: var(--meter-green);
  transition: height 0.05s linear, background 0.1s ease;
  border-radius: 0 0 1px 1px;
}

.ch-strip-meter .meter-fill.warm {
  background: var(--meter-yellow);
}

.ch-strip-meter .meter-fill.hot {
  background: var(--meter-red);
}

.ch-strip-meter .meter-peak {
  position: absolute;
  left: 1px;
  right: 1px;
  height: 2px;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 1px;
  transition: bottom 0.1s ease;
  z-index: 2;
}

/* ===== Mini Vertical Fader ===== */
.ch-strip-fader {
  width: 100%;
  height: 50px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  flex-shrink: 0;
}

.ch-strip-fader .fader-label {
  font-size: 7px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1;
}

.ch-strip-fader .fader-track {
  width: 12px;
  flex: 1;
  background: var(--bg-primary);
  border-radius: 3px;
  border: 1px solid var(--border-color);
  position: relative;
  cursor: pointer;
  touch-action: none;
  min-height: 20px;
}

.ch-strip-fader .fader-fill {
  position: absolute;
  bottom: 0;
  left: 1px;
  right: 1px;
  height: 50%;
  background: var(--accent-blue);
  border-radius: 0 0 2px 2px;
  opacity: 0.5;
  pointer-events: none;
}

.ch-strip-fader .fader-thumb {
  position: absolute;
  left: -3px;
  right: -3px;
  height: 6px;
  background: var(--accent-blue);
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  touch-action: none;
  z-index: 2;
  transition: background 0.1s;
}

.ch-strip-fader .fader-thumb:hover,
.ch-strip-fader .fader-thumb:active {
  background: #81d4fa;
}

.ch-strip-fader .fader-value {
  font-size: 7px;
  font-weight: 600;
  font-family: 'Courier New', monospace;
  color: var(--text-secondary);
  line-height: 1;
}

/* ===== Divider ===== */
.bus-divider {
  height: 1px;
  background: var(--border-color);
  margin: 1px 0;
  flex-shrink: 0;
}

/* ===== Master Section ===== */
.master-section {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 3px 4px;
  background: var(--bg-secondary);
  border-radius: 4px;
  border: 1px solid var(--border-color);
  border-top: 2px solid var(--accent-orange);
  flex-shrink: 0;
}

.master-section.muted {
  border-top-color: var(--mute-red);
  opacity: 0.7;
}

.master-label {
  font-size: 10px;
  font-weight: 800;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: center;
}

.master-controls {
  display: flex;
  gap: 6px;
  align-items: stretch;
}

/* Master Mute Button */
.master-btn {
  width: 32px;
  min-height: 40px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s ease;
  background: var(--bg-primary);
  color: var(--text-secondary);
  flex-shrink: 0;
  align-self: center;
}

.master-btn:hover {
  filter: brightness(1.3);
}

.master-btn.mute.active {
  background: var(--mute-red);
  color: #fff;
  border-color: var(--mute-red);
  box-shadow: 0 0 8px rgba(229, 57, 53, 0.4);
}

/* Master Stereo Meters */
.master-meters {
  display: flex;
  gap: 3px;
  flex: 1;
  height: 60px;
  min-width: 0;
}

.master-meter-channel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  min-width: 0;
}

.master-meter-channel .meter-label {
  font-size: 9px;
  font-weight: 700;
  color: var(--text-secondary);
}

.master-meter-channel .meter-track {
  flex: 1;
  width: 100%;
  max-width: var(--master-meter-width);
  background: var(--bg-primary);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.master-meter-channel .meter-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 0%;
  background: var(--meter-green);
  transition: height 0.05s linear, background 0.1s ease;
  border-radius: 0 0 2px 2px;
}

.master-meter-channel .meter-fill.warm {
  background: var(--meter-yellow);
}

.master-meter-channel .meter-fill.hot {
  background: var(--meter-red);
}

.master-meter-channel .meter-peak {
  position: absolute;
  left: 1px;
  right: 1px;
  height: 2px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 1px;
  transition: bottom 0.1s ease;
  z-index: 2;
}

.master-meter-channel .meter-tick {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  z-index: 1;
}

/* Master Fader */
.master-fader-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 40px;
  flex-shrink: 0;
}

.master-fader-section .fader-label {
  font-size: 8px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.master-fader-section .fader-track {
  width: 16px;
  flex: 1;
  min-height: 40px;
  background: var(--bg-primary);
  border-radius: 4px;
  border: 1px solid var(--border-color);
  position: relative;
  cursor: pointer;
  touch-action: none;
}

.master-fader-section .fader-fill {
  position: absolute;
  bottom: 0;
  left: 1px;
  right: 1px;
  height: 50%;
  background: var(--accent-orange);
  border-radius: 0 0 3px 3px;
  opacity: 0.4;
  pointer-events: none;
}

.master-fader-section .fader-thumb {
  position: absolute;
  left: -4px;
  right: -4px;
  height: 8px;
  background: var(--accent-orange);
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  touch-action: none;
  z-index: 2;
  transition: background 0.1s;
}

.master-fader-section .fader-thumb:hover,
.master-fader-section .fader-thumb:active {
  background: #ffab40;
}

.master-fader-section .fader-value {
  font-size: 9px;
  font-weight: 700;
  font-family: 'Courier New', monospace;
  color: var(--text-primary);
}

/* ===== Bus Readout Bar ===== */
.bus-readout-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 2px 4px;
  flex-shrink: 0;
}

.bus-readout-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.bus-readout {
  font-size: 10px;
  font-weight: 600;
  font-family: 'Courier New', monospace;
  color: var(--accent-blue);
}

.bus-readout span.hot {
  color: var(--meter-red);
  font-weight: 700;
}

/* ===== Responsive ===== */
@media (max-height: 280px) {
  .ch-strip-fader { height: 30px; }
  .master-meters { height: 36px; }
  .master-fader-section .fader-track { min-height: 24px; }
  .master-label { font-size: 8px; }
  .ch-strip-label { font-size: 7px; }
}

@media (max-height: 350px) {
  .ch-strip-fader { height: 36px; }
  .master-meters { height: 40px; }
}

@media (min-height: 450px) {
  .ch-strip-fader { height: 60px; }
  .master-meters { height: 70px; }
  :root { --channel-width: 90px; }
  :root { --master-meter-width: 44px; }
}

@media (max-width: 600px) {
  :root { --channel-width: 60px; }
  .ch-strip-label { font-size: 7px; }
  .ch-strip-mute { width: 20px; height: 16px; font-size: 8px; }
  .ch-strip-fader .fader-track { width: 10px; }
}

@media (max-width: 480px) {
  :root { --channel-width: 50px; }
  .ch-strip { padding: 2px 1px; }
  .bus-channels { gap: 2px; }
}