/*
 * Desktop Material documentation hub — infinite colour picker styles.
 *
 * Mobile-first. The picker is a single column that stays usable from 320 CSS px
 * upward, nothing depends on a hover-capable pointer, and every interactive
 * target keeps at least a 44 px touch dimension.
 */

.dm-color-picker {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

.dm-color-picker *,
.dm-color-picker *::before,
.dm-color-picker *::after {
  box-sizing: border-box;
}

.dm-color-preview-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

/* The chequerboard shows through a translucent colour, so alpha stays legible. */
.dm-color-preview {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--md-outline-variant, rgba(0, 0, 0, 0.2));
  background-color: transparent;
  background-image: linear-gradient(45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(-45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #c9c9c9 75%),
    linear-gradient(-45deg, transparent 75%, #c9c9c9 75%);
  background-size: 12px 12px;
  background-position: 0 0, 0 6px, 6px -6px, -6px 0;
}

.dm-color-preview-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 2px;
}

.dm-color-preview-name {
  font-weight: 600;
  overflow-wrap: anywhere;
}

.dm-color-preview-space {
  font-size: 0.8125rem;
  color: var(--md-on-surface-variant, #49454f);
}

.dm-color-field {
  position: relative;
  width: 100%;
  /*
   * A ratio rather than a fixed height, so the field grows with its column
   * instead of becoming a letterbox on a phone.
   */
  aspect-ratio: 3 / 2;
  min-height: 132px;
  border-radius: 12px;
  border: 1px solid var(--md-outline-variant, rgba(0, 0, 0, 0.2));
  cursor: crosshair;
  touch-action: none;
}

.dm-color-field:focus-visible {
  outline: 3px solid var(--md-primary, #6750a4);
  outline-offset: 2px;
}

.dm-color-field-marker {
  position: absolute;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.55);
  pointer-events: none;
}

.dm-color-slider {
  width: 100%;
}

.dm-color-slider input[type='range'] {
  width: 100%;
  min-width: 0;
  /* 44 px keeps the thumb reachable on touch, where there is no hover preview. */
  height: 44px;
  margin: 0;
  background: transparent;
  appearance: none;
  -webkit-appearance: none;
}

.dm-color-slider input[type='range']:focus-visible {
  outline: 3px solid var(--md-primary, #6750a4);
  outline-offset: 2px;
}

.dm-color-slider input[type='range']::-webkit-slider-runnable-track {
  height: 16px;
  border-radius: 8px;
  border: 1px solid var(--md-outline-variant, rgba(0, 0, 0, 0.2));
}

.dm-color-slider input[type='range']::-moz-range-track {
  height: 16px;
  border-radius: 8px;
  border: 1px solid var(--md-outline-variant, rgba(0, 0, 0, 0.2));
}

.dm-color-slider--hue input[type='range']::-webkit-slider-runnable-track {
  background: linear-gradient(
    to right,
    #f00 0%,
    #ff0 17%,
    #0f0 33%,
    #0ff 50%,
    #00f 67%,
    #f0f 83%,
    #f00 100%
  );
}

.dm-color-slider--hue input[type='range']::-moz-range-track {
  background: linear-gradient(
    to right,
    #f00 0%,
    #ff0 17%,
    #0f0 33%,
    #0ff 50%,
    #00f 67%,
    #f0f 83%,
    #f00 100%
  );
}

.dm-color-slider--alpha input[type='range']::-webkit-slider-runnable-track {
  background-color: transparent;
  background-image: linear-gradient(
      to right,
      transparent,
      var(--dm-alpha-color, #000)
    ),
    linear-gradient(45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(-45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #c9c9c9 75%),
    linear-gradient(-45deg, transparent 75%, #c9c9c9 75%);
  background-size: 100% 100%, 10px 10px, 10px 10px, 10px 10px, 10px 10px;
  background-position: 0 0, 0 0, 0 5px, 5px -5px, -5px 0;
}

.dm-color-slider--alpha input[type='range']::-moz-range-track {
  background-color: transparent;
  background-image: linear-gradient(
      to right,
      transparent,
      var(--dm-alpha-color, #000)
    ),
    linear-gradient(45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(-45deg, #c9c9c9 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #c9c9c9 75%),
    linear-gradient(-45deg, transparent 75%, #c9c9c9 75%);
  background-size: 100% 100%, 10px 10px, 10px 10px, 10px 10px, 10px 10px;
  background-position: 0 0, 0 0, 0 5px, 5px -5px, -5px 0;
}

.dm-color-slider input[type='range']::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  margin-top: -5px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--md-on-surface, #1d1b20);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.55);
}

.dm-color-slider input[type='range']::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--md-on-surface, #1d1b20);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.55);
}

.dm-color-entry {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.dm-color-entry-label,
.dm-color-translator-heading,
.dm-color-recent-heading {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--md-on-surface-variant, #49454f);
}

.dm-color-entry-input,
.dm-color-translator-value {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: 44px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--md-outline, rgba(0, 0, 0, 0.35));
  background: var(--md-surface, #fef7ff);
  color: var(--md-on-surface, #1d1b20);
  font-family: 'Roboto Mono', ui-monospace, monospace;
  font-size: 0.875rem;
}

.dm-color-entry-input[aria-invalid='true'],
.dm-color-translator-value[aria-invalid='true'] {
  border-color: var(--md-error, #b3261e);
  border-width: 2px;
}

.dm-color-entry-error {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--md-error, #b3261e);
}

.dm-color-translator {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/*
 * One row per notation. It wraps to two lines on a narrow phone rather than
 * compressing the value field into unreadability.
 */
.dm-color-translator-row {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.dm-color-translator-label {
  font-size: 0.8125rem;
  color: var(--md-on-surface-variant, #49454f);
  overflow-wrap: anywhere;
}

.dm-color-translator-row.is-undefined .dm-color-translator-value {
  font-style: italic;
  color: var(--md-on-surface-variant, #49454f);
}

.dm-color-translator-copy,
.dm-color-reset,
.dm-color-recent-swatch {
  min-height: 44px;
  min-width: 44px;
  border-radius: 8px;
  border: 1px solid var(--md-outline, rgba(0, 0, 0, 0.35));
  background: var(--md-surface-variant, #e7e0ec);
  color: var(--md-on-surface-variant, #49454f);
  font: inherit;
  font-size: 0.8125rem;
  cursor: pointer;
}

.dm-color-translator-copy:disabled {
  opacity: 0.5;
  cursor: default;
}

.dm-color-translator-copy:focus-visible,
.dm-color-reset:focus-visible,
.dm-color-recent-swatch:focus-visible {
  outline: 3px solid var(--md-primary, #6750a4);
  outline-offset: 2px;
}

.dm-color-gamut {
  margin: 0;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--md-tertiary-container, #ffd8e4);
  color: var(--md-on-tertiary-container, #31111d);
  font-size: 0.8125rem;
}

.dm-color-contrast {
  font-size: 0.8125rem;
  color: var(--md-on-surface-variant, #49454f);
  overflow-wrap: anywhere;
}

.dm-color-recent {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.dm-color-recent-swatch {
  width: 44px;
  height: 44px;
  padding: 0;
}

.dm-color-actions {
  display: flex;
  gap: 8px;
}

/*
 * At 360 px and below the label column would squeeze the value field, so the
 * row becomes two lines and the value keeps its full width.
 */
@media (max-width: 360px) {
  .dm-color-translator-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .dm-color-translator-label {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .dm-color-picker * {
    transition: none !important;
    animation: none !important;
  }
}

@media (forced-colors: active) {
  .dm-color-field,
  .dm-color-preview,
  .dm-color-recent-swatch {
    border: 1px solid CanvasText;
  }

  /*
   * The field's meaning is its gradient, which forced colours remove. Say so,
   * rather than presenting an empty box as a working control.
   */
  .dm-color-field::after {
    content: 'Use the numeric fields below in high-contrast mode.';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    text-align: center;
    font-size: 0.8125rem;
    background: Canvas;
    color: CanvasText;
  }
}