:root {
  --bg-app: #0e0e0e;
  --bg-panel: #161616;
  --bg-card: #1f1f1f;
  --bg-input: #0a0a0a;
  --text-main: #dfdfdf;
  --text-muted: #888888;
  --accent: #3a8b65;
  --accent-hover: #45a477;
  --border: #2a2a2a;
  --border-active: #444444;
  --color-safe: #3a8b65;
  --color-warn: #c2994a;
  --color-danger: #b35656;
}

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

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family:
    system-ui,
    -apple-system,
    "Inter",
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  height: 100vh;
  overflow: hidden;
  font-size: 14px;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 12px;
  gap: 12px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-panel);
  padding: 12px 16px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

header h1 {
  font-size: 1.2rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.5px;
}

.btn {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 3px;
  font-weight: 500;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn:hover {
  background: var(--border);
  border-color: var(--border-active);
}

.btn.active {
  background: var(--color-danger);
  border-color: var(--color-danger);
  color: #fff;
}

.main-content {
  display: flex;
  gap: 12px;
  flex: 1;
  overflow: hidden;
}

.sidebar {
  width: 280px;
  flex: 0 0 280px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  transition:
    flex-basis 0.3s ease,
    width 0.3s ease,
    padding 0.3s ease,
    opacity 0.3s ease,
    margin 0.3s ease;
}

.sidebar.collapsed {
  width: 0;
  flex-basis: 0;
  padding-left: 0;
  padding-right: 0;
  opacity: 0;
  overflow: hidden;
}

.sidebar::-webkit-scrollbar {
  width: 4px;
}
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 16px;
}

.panel h2 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
  padding-bottom: 8px;
}

.setting-group {
  margin-bottom: 16px;
}

.setting-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-main);
}

.setting-group select,
.setting-group input[type="number"],
.setting-group input[type="range"] {
  width: 100%;
  background: var(--bg-input);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 6px 8px;
  border-radius: 3px;
  font-size: 0.85rem;
  outline: none;
  transition: border-color 0.15s;
}

.setting-group select:focus,
.setting-group input[type="number"]:focus {
  border-color: var(--border-active);
}

.setting-group input[type="range"] {
  accent-color: var(--accent);
  cursor: pointer;
  -webkit-appearance: none;
  height: 4px;
  padding: 0;
  border: none;
  background: var(--border);
}
.setting-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 2px;
  cursor: pointer;
}

.meter-wrapper {
  margin-top: 16px;
  position: relative;
  height: 24px;
  margin-bottom: 8px;
}

.meter-track {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 2px;
  height: 12px;
  position: relative;
  overflow: hidden;
}

.meter-fill {
  height: 100%;
  width: 0%;
  background: var(--color-safe);
  transition: width 0.05s ease-out;
}

.marker {
  position: absolute;
  top: 14px;
  font-size: 0.65rem;
  color: var(--text-muted);
  transform: translateX(-50%);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.peak-readout {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 1.3rem;
  font-weight: bold;
  text-align: right;
  color: var(--text-main);
}

.status-offline {
  color: var(--text-muted);
}
.status-online {
  color: var(--color-safe);
}
.info-panel p {
  font-size: 0.85rem;
  margin-bottom: 4px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
}
.info-panel p span {
  color: var(--text-main);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.visualizers {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-auto-rows: minmax(min(300px, 50%), 1fr);
  gap: 12px;
  height: 100%;
  overflow-y: auto;
  align-content: stretch;
}

.viz-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
}

.viz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.viz-header h3 {
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
}

.viz-info {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.canvas-wrapper {
  flex: 1;
  position: relative;
  background: #000000;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  padding: 5px;
}

.y-labels {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.y-labels span {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.4);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

@keyframes blink {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
  100% {
    opacity: 1;
  }
}

.x-labels {
  position: absolute;
  bottom: 5px;
  left: 35px; /* Offset for y-labels */
  right: 5px;
  display: flex;
  justify-content: space-between;
}

.x-labels span {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.4);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.fullscreen-card {
  position: fixed !important;
  inset: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 9999 !important;
  background: var(--bg-panel) !important;
  margin: 0 !important;
  padding: 12px !important;
  box-sizing: border-box !important;
  border-radius: 0 !important;
  border: none !important;
  display: flex !important;
  flex-direction: column !important;
}