/*
  CSS Reference Interactive Demo Styles
  Visual demonstrations where students manipulate CSS properties in real-time
*/

/* ===========================================
   CSS Demo Container
   =========================================== */
.css-demo {
  border: 2px solid var(--sand-4);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-lg);
  background-color: var(--background-1);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal);
}

.css-demo:hover {
  box-shadow: var(--shadow-md);
}

.css-demo:focus-within {
  box-shadow: var(--shadow-md);
  border-color: var(--brand-color);
}

/* ===========================================
   Demo Preview Section
   =========================================== */
.demo-preview {
  padding: var(--space-xl);
  background-color: var(--background-1);
  border-bottom: 2px solid var(--sand-4);
  position: relative;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image:
    linear-gradient(45deg, var(--sand-2) 25%, transparent 25%),
    linear-gradient(-45deg, var(--sand-2) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--sand-2) 75%),
    linear-gradient(-45deg, transparent 75%, var(--sand-2) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.demo-preview::before {
  content: "Preview";
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--cyan-8);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--cyan-1);
  border-radius: var(--radius-sm);
}

/* ===========================================
   Demo Box - The element being styled
   =========================================== */
.demo-box {
  width: 120px;
  height: 80px;
  background-color: var(--orange-4);
  color: var(--sand-15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  text-align: center;
  transition: all 0.15s ease-out;
  position: relative;
}

/* Variant for typography demos */
.demo-box--text {
  width: auto;
  height: auto;
  min-width: 200px;
  padding: var(--space-md);
  background-color: var(--background-2);
  color: var(--text-1);
  display: block;
  text-align: left;
  border: 1px solid var(--sand-4);
}

/* Variant for background color demos */
.demo-box--color {
  width: 160px;
  height: 100px;
  border: 1px solid var(--sand-6);
}

/* Variant for margin demos - shows spacing context */
.demo-box--margin {
  background-color: var(--cyan-4);
}

/* Wrapper to visualize margins */
.margin-context {
  background-color: rgba(255, 200, 100, 0.3);
  padding: 0;
  display: inline-block;
  border: 2px dashed var(--orange-6);
}

.margin-context::before {
  content: "margin area";
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--text-xs);
  color: var(--orange-8);
  white-space: nowrap;
  margin-bottom: var(--space-xs);
}

/* Variant for display demos */
.display-demo-container {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.demo-box--display {
  width: 80px;
  height: 50px;
  font-size: var(--text-xs);
}

/* Variant for shadow demos */
.demo-box--shadow {
  background-color: var(--background-1);
  border: 1px solid var(--sand-4);
}

/* ===========================================
   Controls Section
   =========================================== */
.demo-controls {
  padding: var(--space-md) var(--space-lg);
  background-color: var(--background-2);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  border-bottom: 1px solid var(--sand-4);
}

.demo-controls label {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-2);
  white-space: nowrap;
}

/* Range Slider */
.demo-controls input[type="range"] {
  flex: 1;
  min-width: 120px;
  max-width: 200px;
  height: 8px;
  background: var(--sand-4);
  border-radius: 4px;
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.demo-controls input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--brand-color);
  border-radius: 50%;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.demo-controls input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
  background: var(--brand-hover);
}

.demo-controls input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--brand-color);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  transition: transform var(--transition-fast), background var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.demo-controls input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.1);
  background: var(--brand-hover);
}

.demo-controls input[type="range"]:focus {
  outline: none;
}

.demo-controls input[type="range"]:focus-visible::-webkit-slider-thumb {
  outline: 2px solid var(--brand-color);
  outline-offset: 2px;
}

/* Output value display */
.demo-controls output {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-1);
  background-color: var(--sand-3);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  min-width: 60px;
  text-align: center;
}

/* Color Picker */
.demo-controls input[type="color"] {
  -webkit-appearance: none;
  appearance: none;
  width: 50px;
  height: 36px;
  border: 2px solid var(--sand-5);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 2px;
  background: var(--background-1);
}

.demo-controls input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

.demo-controls input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 2px;
}

.demo-controls input[type="color"]::-moz-color-swatch {
  border: none;
  border-radius: 2px;
}

.demo-controls input[type="color"]:hover {
  border-color: var(--brand-color);
}

.demo-controls input[type="color"]:focus-visible {
  outline: 2px solid var(--brand-color);
  outline-offset: 2px;
}

/* ===========================================
   Toggle Buttons (for display, position, etc.)
   =========================================== */
.demo-toggle-group {
  display: flex;
  gap: 0;
  background-color: var(--sand-3);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.demo-toggle-group button {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-xs) var(--space-sm);
  background: transparent;
  border: none;
  color: var(--text-2);
  cursor: pointer;
  border-radius: calc(var(--radius-sm) - 1px);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
  white-space: nowrap;
}

.demo-toggle-group button:hover {
  color: var(--text-1);
  background-color: var(--sand-4);
}

.demo-toggle-group button.active {
  background-color: var(--brand-color);
  color: white;
  font-weight: 600;
}

.demo-toggle-group button:focus-visible {
  outline: 2px solid var(--brand-color);
  outline-offset: 2px;
}

/* ===========================================
   Code Display Section
   =========================================== */
.demo-code {
  background-color: var(--sand-15);
  padding: var(--space-md) var(--space-lg);
  position: relative;
}

.demo-code::before {
  content: "CSS";
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--orange-4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.demo-code code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--sand-3);
  display: block;
  padding: 0;
  background: transparent;
}

.demo-code .value {
  color: var(--cyan-4);
  font-weight: 600;
}

.demo-code .property {
  color: var(--orange-3);
}

/* ===========================================
   Box Model Visualization Demo
   =========================================== */
.box-model-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.box-model-layer {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: all 0.2s ease;
}

.box-model-margin {
  background-color: rgba(255, 200, 100, 0.4);
  border: 2px dashed var(--orange-6);
  padding: 10px;
}

.box-model-border {
  background-color: var(--sand-11);
  color: var(--sand-2);
  padding: 8px;
}

.box-model-padding {
  background-color: rgba(100, 200, 255, 0.4);
  border: 2px dashed var(--cyan-6);
  padding: 10px;
}

.box-model-content {
  background-color: var(--orange-4);
  color: white;
  padding: var(--space-sm) var(--space-md);
  min-width: 60px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

/* ===========================================
   Display Demo Grid
   =========================================== */
.display-demo-boxes {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--background-2);
  border-radius: var(--radius-sm);
  min-height: 100px;
  align-items: flex-start;
}

.display-demo-boxes .demo-item {
  background-color: var(--cyan-4);
  color: var(--sand-15);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  transition: all 0.2s ease;
}

.display-demo-boxes.is-block .demo-item {
  display: block;
  width: 100%;
}

.display-demo-boxes.is-flex {
  display: flex;
}

.display-demo-boxes.is-flex .demo-item {
  flex: 1;
}

.display-demo-boxes.is-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.display-demo-boxes.is-none .demo-item {
  display: none;
}

/* ===========================================
   Multiple Controls Layout
   =========================================== */
.demo-controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background-color: var(--background-2);
  border-bottom: 1px solid var(--sand-4);
}

.demo-control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.demo-control-group label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.demo-control-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.demo-control-row input[type="range"] {
  flex: 1;
}

/* ===========================================
   Demo Description / Tip
   =========================================== */
.demo-tip {
  padding: var(--space-sm) var(--space-lg);
  background-color: var(--indigo-1);
  border-left: 3px solid var(--indigo-6);
  font-size: var(--text-sm);
  color: var(--indigo-12);
}

.demo-tip strong {
  color: var(--indigo-13);
}

/* ===========================================
   Responsive Adjustments
   =========================================== */
@media (max-width: 768px) {
  .css-demo {
    margin-bottom: var(--space-md);
  }

  .demo-preview {
    padding: var(--space-lg);
    min-height: 100px;
  }

  .demo-controls {
    padding: var(--space-sm) var(--space-md);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }

  .demo-controls input[type="range"] {
    max-width: none;
    width: 100%;
  }

  .demo-toggle-group {
    flex-wrap: wrap;
    justify-content: center;
  }

  .demo-code {
    padding: var(--space-sm) var(--space-md);
  }

  .demo-controls-grid {
    grid-template-columns: 1fr;
    padding: var(--space-sm) var(--space-md);
  }

  .box-model-visual {
    transform: scale(0.85);
    transform-origin: center;
  }
}

@media (max-width: 480px) {
  .demo-preview {
    padding: var(--space-md);
  }

  .demo-preview::before {
    font-size: 0.65rem;
    padding: 0.2em 0.4em;
  }

  .demo-box {
    width: 100px;
    height: 60px;
    font-size: var(--text-xs);
  }

  .demo-toggle-group button {
    font-size: 0.65rem;
    padding: var(--space-xs);
  }

  .demo-code code {
    font-size: var(--text-xs);
  }

  .box-model-visual {
    transform: scale(0.7);
  }
}

/* ===========================================
   Print Styles
   =========================================== */
@media print {
  .css-demo {
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  .demo-preview {
    background: white;
    border-bottom: 1px solid #ccc;
    background-image: none;
  }

  .demo-preview::before {
    background: #f0f0f0;
    color: #333;
  }

  .demo-controls {
    background: #f5f5f5;
    border-bottom: 1px solid #ccc;
  }

  .demo-controls input[type="range"] {
    display: none;
  }

  .demo-toggle-group {
    display: none;
  }

  .demo-code {
    background: #f5f5f5;
  }

  .demo-code::before {
    color: #666;
  }

  .demo-code code {
    color: #333;
  }

  .demo-code .value {
    color: #0066cc;
  }
}