:root {
  --bg-base: #181825;
  --bg-mantle: #1e1e2e;
  --bg-crust: #11111b;
  --bg-surface: #313244;
  --bg-surface-hover: #45475a;
  --text-main: #cdd6f4;
  --text-sub: #a6adc8;
  --text-dim: #6c7086;
  --accent-blue: #89b4fa;
  --accent-green: #a6e3a1;
  --accent-red: #f38ba8;
  --accent-orange: #fab387;
  --accent-mauve: #cba6f7;
  --border-color: #313244;
  --border-active: #45475a;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-main);
  font-size: 13px;
  line-height: 1.4;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Controls */
header {
  background-color: var(--bg-mantle);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 16px;
}

.top-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.btn {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-active);
  border-radius: 4px;
  padding: 6px 14px;
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.btn:hover {
  background-color: var(--bg-surface-hover);
}

.btn-play {
  background-color: var(--accent-green);
  color: var(--bg-crust);
  min-width: 90px;
}

.btn-pause {
  background-color: var(--accent-orange);
  color: var(--bg-crust);
  min-width: 90px;
}

.btn-reset {
  background-color: var(--accent-red);
  color: var(--bg-crust);
}

.divider {
  width: 1px;
  height: 24px;
  background-color: var(--border-color);
}

.control-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
}

select, input[type="number"] {
  background-color: var(--bg-crust);
  color: var(--text-main);
  border: 1px solid var(--border-active);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  outline: none;
}

select:focus, input[type="number"]:focus {
  border-color: var(--accent-blue);
}

input[type="range"] {
  accent-color: var(--accent-blue);
  width: 80px;
  cursor: pointer;
}

/* Main Grid Layout */
main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 12px 16px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

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

.column {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  background-color: var(--bg-mantle);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  flex-direction: column;
}

.card-title {
  color: var(--accent-mauve);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Canvas styling */
.canvas-container {
  position: relative;
  width: 100%;
  border-radius: 6px;
  overflow: hidden;
  background-color: var(--bg-base);
  border: 1px solid var(--border-color);
}

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

.tooltip {
  position: absolute;
  background-color: rgba(17, 17, 27, 0.95);
  border: 1px solid var(--border-active);
  color: var(--text-main);
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.1s;
  z-index: 10;
  white-space: nowrap;
}

/* Layer Editor Controls */
.editor-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.table-wrapper {
  overflow-x: auto;
  max-height: 150px;
  margin-top: 6px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
}

th, td {
  border: 1px solid var(--border-color);
  padding: 4px 6px;
  text-align: right;
}

th {
  background-color: var(--bg-crust);
  color: var(--text-sub);
  position: sticky;
  top: 0;
}

td[contenteditable="true"]:focus {
  background-color: var(--bg-surface-hover);
  outline: 1px solid var(--accent-blue);
}

.hint-text {
  font-size: 11px;
  color: var(--text-dim);
  font-style: italic;
  margin-top: 6px;
}

/* Footer / Status Bar */
footer {
  background-color: var(--bg-crust);
  border-top: 1px solid var(--border-color);
  padding: 6px 16px;
  font-size: 11px;
  color: var(--text-sub);
  display: flex;
  justify-content: space-between;
}