:root {
  --pico-font-size: 100%;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

.container-fluid {
  max-width: 100%;
  padding: 0.5rem;
}

header h1 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

#description {
  margin-bottom: 0.75rem;
}

#description h1, #description h2, #description h3 {
  font-size: 1.1rem;
  margin-top: 0;
}

#controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

#render-controls, #export-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#status-bar {
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
}

#status-text {
  margin-right: 0.5rem;
}

#progress-bar {
  display: inline-block;
  width: 200px;
  vertical-align: middle;
}

#app-layout {
  display: flex;
  gap: 0.5rem;
  min-height: 500px;
}

#viewer-panel {
  flex: 2;
  min-width: 0;
}

#customizer-panel {
  flex: 1;
  min-width: 250px;
  max-width: 400px;
  overflow-y: auto;
  border: 1px solid var(--pico-border-color);
  border-radius: var(--pico-border-radius);
  padding: 0.75rem;
}

#viewer-container {
  width: 100%;
  height: 500px;
  border: 1px solid var(--pico-border-color);
  border-radius: var(--pico-border-radius);
  overflow: hidden;
  position: relative;
}

#viewer-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

#viewer-placeholder {
  width: 100%;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--pico-border-color);
  border-radius: var(--pico-border-radius);
  color: var(--pico-muted-color);
}

#viewer-placeholder.hidden {
  display: none;
}

#customizer-tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--pico-border-color);
  padding-bottom: 0.25rem;
  overflow-x: auto;
}

#customizer-tabs button {
  font-size: 0.85rem;
  padding: 0.25rem 0.75rem;
  white-space: nowrap;
}

#customizer-tabs button.active {
  background-color: var(--pico-primary);
  color: var(--pico-primary-inverted);
}

#customizer-content > fieldset {
  margin-bottom: 1rem;
}

#customizer-content fieldset {
  border: 1px solid var(--pico-border-color);
  border-radius: var(--pico-border-radius);
  padding: 0.75rem;
  margin-bottom: 0.75rem;
}

#customizer-content legend {
  font-weight: 600;
  padding: 0 0.5rem;
}

#customizer-content .param-group {
  margin-bottom: 0.75rem;
}

#customizer-content .param-group:last-child {
  margin-bottom: 0;
}

#customizer-content label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

#customizer-content input[type="number"],
#customizer-content input[type="text"],
#customizer-content select {
  width: 100%;
  margin-bottom: 0.25rem;
}

#customizer-content input[type="checkbox"] {
  margin-right: 0.5rem;
}

/* Mobile layout */
@media (max-width: 768px) {
  #app-layout {
    flex-direction: column;
  }

  #customizer-panel {
    max-width: 100%;
  }

  #viewer-container,
  #viewer-placeholder {
    height: 350px;
  }
}

/* Switch toggle styling */
.switch {
  display: inline-flex !important;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.switch input[type="checkbox"] {
  margin: 0;
}

/* Markdown content */
.markdown h1 { font-size: 1.5rem; }
.markdown h2 { font-size: 1.25rem; }
.markdown h3 { font-size: 1.1rem; }
.markdown p { margin-bottom: 0.5rem; }
.markdown ul, .markdown ol { margin-bottom: 0.5rem; }
.markdown code {
  background: var(--pico-card-background);
  padding: 0.1em 0.3em;
  border-radius: 3px;
  font-size: 0.9em;
}
.markdown pre {
  background: var(--pico-card-background);
  padding: 0.75rem;
  border-radius: var(--pico-border-radius);
  overflow-x: auto;
}
.markdown pre code {
  background: none;
  padding: 0;
}