/* ============================================
   BUDDY MAKER — App Layout
   ============================================ */

/* Top bar */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-sm) var(--sp-lg);
  border-bottom: 1px solid var(--border-subtle);
  height: 48px;
  flex-shrink: 0;
}

.app-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 15px;
  color: var(--accent);
  font-weight: 400;
}

.app-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 12px;
  letter-spacing: 0.3px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

/* Theme toggle */
.theme-toggle {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s, background 0.2s;
}
.theme-toggle:hover {
  color: var(--text-primary);
  background: var(--surface-hover);
}

/* Main layout */
.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  height: calc(100vh - 48px);
}

/* Canvas area (center) */
.canvas-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-width: 0;
}

.canvas-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.canvas-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, var(--accent-dim), transparent 70%);
  pointer-events: none;
}

/* Controls panel (right) */
.controls-panel {
  width: 320px;
  flex-shrink: 0;
  border-left: 1px solid var(--border-subtle);
  overflow-y: auto;
  background: var(--surface);
  display: flex;
  flex-direction: column;
}

.controls-scroll {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-md);
}

/* Control sections */
.control-section {
  margin-bottom: var(--sp-lg);
}

.section-title {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: var(--sp-sm);
  padding-bottom: var(--sp-xs);
  border-bottom: 1px solid var(--border-subtle);
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 0;
  gap: 12px;
  min-height: 32px;
}

.control-label {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 80px;
  flex-shrink: 0;
}

.control-input {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 180px;
}

.control-value {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  min-width: 36px;
  text-align: right;
  flex-shrink: 0;
}

/* Species tiles */
.species-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-sm);
  margin-top: var(--sp-xs);
}

.species-tile {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  transition: border-color 0.2s var(--ease-out), background 0.2s, transform 0.2s var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.species-tile:hover {
  border-color: var(--text-muted);
  background: var(--surface-hover);
}

.species-tile.active {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.species-tile:active {
  transform: scale(0.95);
}

.species-tile canvas {
  width: 48px;
  height: 48px;
}

.species-name {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 500;
}

.species-tile.active .species-name {
  color: var(--accent);
}

/* Palette swatches */
.palette-row {
  display: flex;
  gap: 6px;
  margin-top: var(--sp-xs);
  flex-wrap: wrap;
}

.palette-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s var(--ease-spring);
  position: relative;
}

.palette-swatch:hover {
  transform: scale(1.15);
}

.palette-swatch.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}

/* Advanced toggle */
.advanced-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 0;
  transition: color 0.2s;
}

.advanced-toggle:hover {
  color: var(--text-secondary);
}

.advanced-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform 0.3s var(--ease-out);
}

.advanced-toggle.open svg {
  transform: rotate(90deg);
}

.advanced-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out);
}

.advanced-panel.open {
  max-height: 800px;
}

/* Preset bar */
.preset-bar {
  display: flex;
  gap: 6px;
  padding: var(--sp-sm) var(--sp-md);
  border-top: 1px solid var(--border-subtle);
  overflow-x: auto;
  flex-shrink: 0;
}

.preset-chip {
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 500;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg);
  white-space: nowrap;
  transition: all 0.2s var(--ease-out);
  cursor: pointer;
}

.preset-chip:hover {
  border-color: var(--text-muted);
  background: var(--surface-hover);
}

.preset-chip.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* Action buttons */
.action-bar {
  display: flex;
  gap: var(--sp-sm);
  padding: var(--sp-sm) var(--sp-md);
  border-top: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.action-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: var(--bg);
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.action-btn:hover {
  border-color: var(--text-muted);
  background: var(--surface-hover);
}

.action-btn.primary {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.action-btn.primary:hover {
  background: var(--accent-hover);
}

/* Preview mode */
.preview-container {
  display: none;
  flex: 1;
  flex-direction: column;
  overflow: hidden;
}

.preview-container.active {
  display: flex;
}

.canvas-area.hidden {
  display: none;
}

/* Tab bar */
.tab-bar {
  display: flex;
  gap: 0;
  padding: 0 var(--sp-lg);
  background: var(--surface);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.tab-btn {
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: -1px;
}

.tab-btn:hover {
  color: var(--text-secondary);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
  .app-body {
    flex-direction: column;
  }
  .controls-panel {
    width: 100%;
    max-height: 50vh;
    border-left: none;
    border-top: 1px solid var(--border-subtle);
  }
  .canvas-area {
    min-height: 40vh;
  }
}