/*
 * palette.css — styles for the click-to-copy palettes
 * -------------------------------------------------------------------------
 * palette.js builds this structure:
 *
 *   .palette
 *     .palette-meta        count, kind chip, source link
 *     .palette-ribbon      gradient strip (sequential palettes only)
 *     .palette-grid
 *       button.palette-swatch  (one per color)
 *         .palette-name, .palette-value
 *     .palette-tools       "Copy all" row of .palette-btn
 *
 *   .palette-format        HEX / RGB / HSL switch (.palette-seg-btn)
 *
 * Theming: everything except the swatches themselves uses Bootstrap's CSS
 * variables (--bs-body-color, --bs-border-color, ...). Quarto swaps those
 * when the reader toggles dark mode, so no dark-mode rules are needed here.
 * The second argument of each var() is a fallback in case a variable is missing.
 *
 * The swatch colors come from JS as inline custom properties:
 *   --sw-bg  the swatch color
 *   --sw-fg  black or white text, whichever contrasts better
 */

.palette {
  margin: 0.75rem 0 2.25rem;
}

/* ---- meta line ---------------------------------------------------------- */

.palette-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.75rem;
  margin: 0 0 0.7rem;
  font-size: 0.85rem;
  color: var(--bs-secondary-color, #6c757d);
}

.palette-chip {
  padding: 0.05rem 0.6rem;
  border: 1px solid var(--bs-border-color, #dee2e6);
  border-radius: 999px;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--bs-body-color);
}

.palette-chip-cvd {
  border-color: color-mix(in srgb, var(--bs-link-color, #0d6efd) 55%, transparent);
  color: var(--bs-link-color, #0d6efd);
}

/* ---- gradient ribbon (sequential palettes) ------------------------------ */

.palette-ribbon {
  height: 0.9rem;
  margin-bottom: 0.6rem;
  border: 1px solid var(--bs-border-color, #dee2e6);
  border-radius: 0.45rem;
}

/* ---- swatches ------------------------------------------------------------ */

.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr));
  gap: 0.6rem;
}

/* A swatch is a real <button>, so keyboard focus and Enter/Space work for free. */
.palette-swatch {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  gap: 0.1rem;
  min-height: 6.5rem;
  padding: 0.7rem 0.8rem;
  /* A faint outline so very light swatches (yellow, grey) and very dark ones
     (black on a dark page) don't vanish into the background. */
  border: 1px solid color-mix(in srgb, var(--bs-body-color, #888) 22%, transparent);
  border-radius: 0.65rem;
  background: var(--sw-bg);
  color: var(--sw-fg);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.palette-swatch:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
}

.palette-swatch:active {
  transform: scale(0.98);
}

.palette-swatch:focus-visible,
.palette-btn:focus-visible,
.palette-seg-btn:focus-visible {
  outline: 3px solid var(--bs-link-color, #0d6efd);
  outline-offset: 2px;
}

.palette-name {
  font-size: 0.8rem;
  line-height: 1.25;
  opacity: 0.88;
}

.palette-value {
  font-family: var(--bs-font-monospace, ui-monospace, SFMono-Regular, Menlo, Consolas, monospace);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* "Copied" pill. JS adds .is-copied (or .is-failed) for about 1.4 s and puts
   the message in data-msg. The pill swaps the swatch's text and background
   colors, so it is readable on any color. */
.palette-swatch.is-copied::after,
.palette-swatch.is-failed::after {
  content: attr(data-msg);
  position: absolute;
  top: 0.55rem;
  right: 0.6rem;
  padding: 0.1rem 0.55rem;
  border-radius: 999px;
  background: var(--sw-fg);
  color: var(--sw-bg);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.5;
  animation: palette-pop 0.18s ease-out;
}

.palette-swatch.is-copied::after {
  content: "✓ " attr(data-msg);
}

@keyframes palette-pop {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---- toolbars ------------------------------------------------------------ */

.palette-tools,
.palette-format {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.palette-tools {
  margin-top: 0.8rem;
}

.palette-format {
  margin: 0.5rem 0 1.5rem;
}

.palette-tools-label {
  margin-right: 0.2rem;
  font-size: 0.82rem;
  color: var(--bs-secondary-color, #6c757d);
}

.palette-btn {
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--bs-border-color, #dee2e6);
  border-radius: 999px;
  background: transparent;
  color: var(--bs-body-color);
  font-family: var(--bs-font-monospace, ui-monospace, Menlo, Consolas, monospace);
  font-size: 0.8rem;
  line-height: 1.5;
  cursor: pointer;
}

.palette-btn:hover {
  background: var(--bs-tertiary-bg, rgba(128, 128, 128, 0.12));
}

.palette-btn.is-copied {
  border-color: var(--bs-link-color, #0d6efd);
  color: var(--bs-link-color, #0d6efd);
}

/* segmented control for the single-color format */
.palette-seg {
  display: inline-flex;
  border: 1px solid var(--bs-border-color, #dee2e6);
  border-radius: 999px;
  overflow: hidden;
}

.palette-seg-btn {
  padding: 0.25rem 0.9rem;
  border: 0;
  background: transparent;
  color: var(--bs-body-color);
  font-family: var(--bs-font-monospace, ui-monospace, Menlo, Consolas, monospace);
  font-size: 0.8rem;
  cursor: pointer;
}

.palette-seg-btn + .palette-seg-btn {
  border-left: 1px solid var(--bs-border-color, #dee2e6);
}

.palette-seg-btn:hover {
  background: var(--bs-tertiary-bg, rgba(128, 128, 128, 0.12));
}

.palette-seg-btn[aria-pressed="true"] {
  background: var(--bs-body-color);
  color: var(--bs-body-bg);
}

@media (max-width: 480px) {
  .palette-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .palette-swatch,
  .palette-swatch.is-copied::after,
  .palette-swatch.is-failed::after {
    transition: none;
    animation: none;
  }
}