:root {
  --bg-color: #1a1f2e;
  --surface-color: #242938;
  --text-primary: #e8ecf4;
  --text-secondary: #8b94a7;
  --border-color: #2e3547;
  --accent-color: #5b8def;
  --canvas-bg: #0d1017;
  --hover-glow: rgba(91, 141, 239, 0.08);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  padding: 2rem;
}

.app-container {
  max-width: 1400px;
  margin: 0 auto;
}

.header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.header h1 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
  color: #ffffff;
}

.main-layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.controls-group {
  margin-bottom: 1.5rem;
}

.controls-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-size: 1rem;
}
select:focus {
  outline: none;
  border-color: var(--accent-color);
}

.image-display {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.image-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.image-box h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.main-canvas {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border-color);
  background-color: var(--canvas-bg);
  image-rendering: pixelated;
}

.metrics {
  margin-top: 1rem;
  padding: 1rem;
  background-color: var(--bg-color);
  border-radius: 4px;
  border: 1px solid var(--border-color);
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 1.1rem;
}

.metrics div {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

/* Mallat Grid Styles */
.mallat-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
}

.mallat-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  aspect-ratio: 1;
  width: 100%;
  max-width: 800px;
  border: 2px solid var(--border-color);
  background-color: var(--canvas-bg);
}

.mallat-quadrant {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.subband-canvas {
  width: 100%;
  height: 100%;
  object-fit: fill;
  background-color: var(--canvas-bg);
  image-rendering: pixelated;
}

.slider-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.75);
  padding: 0.25rem 0.5rem;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transition: opacity 0.2s;
}

.mallat-quadrant:hover .slider-overlay {
  opacity: 1;
}

.slider-overlay label {
  color: #c0ccdf;
  font-size: 0.7rem;
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.2rem;
}

.slider-overlay input[type=range] {
  width: 100%;
  height: 4px;
  margin: 0;
  -webkit-appearance: none;
  background: var(--text-secondary);
  border-radius: 2px;
}
.slider-overlay input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 12px;
  width: 12px;
  border-radius: 50%;
  background: var(--accent-color);
  cursor: pointer;
}