:root {
  --bg-0: #030a1d;
  --bg-1: #0a1936;
  --panel: rgba(5, 12, 30, 0.78);
  --line: rgba(110, 194, 255, 0.3);
  --text: #ebf3ff;
  --muted: #9cb3d8;
  --accent: #5fd0ff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "IBM Plex Sans", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 12% 15%, #0f2d60 0%, var(--bg-0) 30%),
    radial-gradient(circle at 88% 82%, #153864 0%, var(--bg-0) 35%),
    linear-gradient(140deg, var(--bg-0), var(--bg-1));
}

.layout {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 16px;
  max-width: 1400px;
  margin: 0 auto;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(143, 190, 255, 0.2);
  border-radius: 16px;
  padding: 0;
  overflow: hidden;
  backdrop-filter: blur(8px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.panel-header h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.7rem;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 0.76rem;
}

.subtitle {
  color: var(--muted);
  margin-top: 8px;
  margin-bottom: 14px;
}

.control-group {
  border-top: 1px solid rgba(125, 171, 231, 0.18);
  padding-top: 12px;
  margin-top: 12px;
}

.control-group h2 {
  margin: 0 0 10px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--muted);
  margin: 8px 0;
}

input[type="range"],
select,
button {
  width: 100%;
}

input[type="range"] {
  accent-color: var(--accent);
}

select,
button {
  border: 1px solid rgba(130, 175, 236, 0.3);
  background: rgba(11, 28, 60, 0.85);
  color: var(--text);
  border-radius: 8px;
  padding: 8px;
}

button {
  font-weight: 600;
  cursor: pointer;
}

button.ghost {
  background: rgba(7, 20, 44, 0.45);
}

.row {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-box {
  margin-top: 14px;
  border: 1px dashed rgba(140, 193, 255, 0.25);
  border-radius: 10px;
  padding: 10px;
  color: var(--muted);
  font-size: 0.85rem;
}

.stage {
  border: 1px solid rgba(142, 188, 247, 0.2);
  border-radius: 16px;
  overflow: hidden;
  background: rgba(4, 12, 32, 0.35);
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(45px);
  z-index: 1;
  pointer-events: none;
}

.orb-a {
  width: 260px;
  height: 260px;
  left: -80px;
  top: 40px;
  background: rgba(61, 165, 255, 0.25);
}

.orb-b {
  width: 320px;
  height: 320px;
  right: -120px;
  bottom: 60px;
  background: rgba(22, 112, 202, 0.3);
}

@media (max-width: 1050px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .panel {
    max-height: none;
  }

  .stage {
    min-height: 60vh;
  }
}

/* Timeline Controls */
.canvas-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-bottom: 1px solid rgba(142, 188, 247, 0.15);
}

.timeline-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: rgba(8, 18, 43, 0.82);
  border-bottom: 1px solid rgba(142, 188, 247, 0.15);
  backdrop-filter: blur(4px);
}

.play-btn {
  width: 90px;
  background: var(--accent);
  color: #030a1d;
  border: none;
  font-weight: bold;
  font-size: 0.95rem;
}
.play-btn:hover {
  filter: brightness(1.1);
}

.timeline-slider-wrapper {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
}

#timelineScrubber {
  height: 6px;
  border-radius: 3px;
  cursor: pointer;
}

/* Mixer Rack Styles */
.mixer-panel {
  background: rgba(4, 11, 28, 0.92);
  backdrop-filter: blur(10px);
  padding: 0;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mixer-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  cursor: pointer;
  background: rgba(143, 190, 255, 0.03);
  user-select: none;
  transition: background 0.2s ease;
  border-bottom: 1px solid rgba(142, 188, 247, 0.15);
}

.mixer-toggle:hover {
  background: rgba(143, 190, 255, 0.08);
}

.mixer-toggle-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: var(--text);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mixer-toggle-icon {
  font-size: 0.9rem;
  color: var(--muted);
  transition: transform 0.3s ease;
}

.mixer-content {
  padding: 10px 14px;
}

.mixer-panel.collapsed .mixer-content {
  display: none;
}

.mixer-panel.collapsed .mixer-toggle {
  border-bottom: none;
}

.mixer-panel.collapsed .mixer-toggle-icon {
  transform: rotate(180deg);
}

.mixer-tracks {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.mixer-strip {
  background: rgba(10, 25, 54, 0.45);
  border: 1px solid rgba(142, 188, 247, 0.12);
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.2s ease, opacity 0.25s ease;
}
.mixer-strip:hover {
  border-color: rgba(142, 188, 247, 0.25);
  background: rgba(10, 25, 54, 0.6);
}

.strip-header {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 4px;
}

.color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-color, var(--accent));
  box-shadow: 0 0 8px var(--accent-color, var(--accent));
}

.strip-label {
  font-size: 0.85rem;
  font-weight: 600;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.strip-controls {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.track-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: opacity 0.2s ease, filter 0.2s ease;
}
.track-row:last-child {
  border-bottom: none;
}
.track-row.dimmed {
  opacity: 0.45;
  filter: grayscale(30%);
}
.mixer-strip.dimmed-group .strip-header {
  opacity: 0.60;
  transition: opacity 0.2s ease;
}

.track-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.track-name {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 500;
  width: 32px;
  flex-shrink: 0;
}

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

.mute-btn, .solo-btn {
  width: 22px;
  height: 20px;
  padding: 0;
  font-size: 0.7rem;
  font-weight: bold;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  flex-shrink: 0;
}
.mute-btn:hover, .solo-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}

.mute-btn.active {
  background: #f43f5e;
  border-color: #f43f5e;
  color: #fff;
  box-shadow: 0 0 6px rgba(244, 63, 94, 0.4);
}
.solo-btn.active {
  background: #fbbf24;
  border-color: #fbbf24;
  color: #030a1d;
  box-shadow: 0 0 6px rgba(251, 191, 36, 0.4);
}

/* Group Mute/Solo Headers */
.group-buttons {
  margin-left: auto;
  display: flex;
  gap: 3px;
}

.group-mute-btn, .group-solo-btn {
  width: 18px;
  height: 16px;
  padding: 0;
  font-size: 0.65rem;
  font-weight: bold;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}
.group-mute-btn:hover, .group-solo-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
}
.group-mute-btn.active {
  background: #f43f5e;
  border-color: #f43f5e;
  color: #fff;
  box-shadow: 0 0 4px rgba(244, 63, 94, 0.4);
}
.group-solo-btn.active {
  background: #fbbf24;
  border-color: #fbbf24;
  color: #030a1d;
  box-shadow: 0 0 4px rgba(251, 191, 36, 0.4);
}

.vol-slider {
  flex-grow: 1;
  width: 0;
  height: 4px;
  margin: 0;
  accent-color: var(--accent-color, var(--accent));
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
  outline: none;
}

/* Master Strip Customization */
.master-strip {
  background: rgba(15, 34, 70, 0.65);
  border-color: rgba(95, 208, 255, 0.3);
}

.master-controls {
  justify-content: center;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 8px;
}

.master-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.master-row .track-name {
  font-size: 0.85rem;
  font-weight: bold;
  color: var(--text);
}

.master-row .vol-slider {
  height: 6px;
  accent-color: var(--accent);
}

@media (max-width: 1200px) {
  .mixer-tracks {
    grid-template-columns: repeat(2, 1fr);
  }
  .master-strip {
    grid-column: span 2;
  }
}
@media (max-width: 768px) {
  .mixer-tracks {
    grid-template-columns: 1fr;
  }
  .master-strip {
    grid-column: span 1;
  }
}

/* Collapsible Settings Panel styles */
.panel-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  cursor: pointer;
  background: rgba(143, 190, 255, 0.05);
  border-bottom: 1px solid rgba(143, 190, 255, 0.1);
  user-select: none;
  transition: background 0.2s ease;
}
.panel-toggle:hover {
  background: rgba(143, 190, 255, 0.1);
}
.panel-toggle-title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: bold;
  font-size: 0.95rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-toggle-icon {
  font-size: 0.9rem;
  color: var(--muted);
  transition: transform 0.3s ease;
}
.panel-content {
  padding: 20px;
}
.panel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 16px;
}
.panel-grid .control-group {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}
.panel.collapsed .panel-content {
  display: none;
}
.panel.collapsed .panel-toggle {
  border-bottom: none;
}
.panel.collapsed .panel-toggle-icon {
  transform: rotate(180deg);
}

.app-footer {
  grid-column: 1 / -1;
  text-align: center;
  padding: 12px 0 4px 0;
  font-size: 0.72rem;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: "IBM Plex Sans", sans-serif;
  letter-spacing: 0.02em;
}
.app-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s ease;
}
.app-footer a:hover {
  color: #aae0ff;
  text-decoration: underline;
}