/* Settings column: theme tiles, custom colours, the Advanced section and the phone-only Customize button. */

/* ---- Theme tiles (live thumbnails of the image) ---- */

.themes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 16px 14px 14px;
}
.theme-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}
.theme-tile input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.thumb {
  display: block;
  width: 100%;
  max-width: 84px;
  height: auto;
  aspect-ratio: 9 / 16;
  border-radius: 8px;
  box-shadow: 0 0 0 1px var(--line);
  transition:
    box-shadow 0.15s ease,
    transform 0.15s ease;
}
.theme-tile:hover .thumb {
  transform: translateY(-2px);
}
.theme-tile input:checked ~ .thumb,
.theme-tile input:checked ~ .thumb-box .thumb {
  box-shadow:
    0 0 0 3px var(--surface),
    0 0 0 4.5px var(--ink);
}
.theme-tile input:focus-visible ~ .thumb,
.theme-tile input:focus-visible ~ .thumb-box .thumb {
  outline: 2px solid var(--accent);
  outline-offset: 7px;
}

/* The Custom tile wraps its thumbnail to place the pencil badge. */
.thumb-box {
  position: relative;
  display: block;
  width: 100%;
  max-width: 84px;
}
.thumb-badge {
  position: absolute;
  inset-inline-end: -7px;
  bottom: -7px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--on-ink);
  box-shadow: 0 0 0 3px var(--surface);
  pointer-events: none;
}
.thumb-badge svg {
  width: 12px;
  height: 12px;
}

.theme-tile .tname {
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
}
.theme-tile input:checked ~ .tname {
  color: var(--text);
  font-weight: 600;
}

/* ---- Custom colours (slides open when the Custom theme is selected) ---- */

.custom-colors {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}
.custom-colors.open {
  grid-template-rows: 1fr;
}
.custom-inner {
  overflow: hidden;
  min-height: 0;
}
.custom-inner .row:first-child {
  border-top: 1px solid var(--line);
}

.color-pick {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}
.color-pick .hex {
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  text-transform: uppercase;
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}
input[type='color'] {
  -webkit-appearance: none;
  appearance: none;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 0;
  background: none;
  border-radius: 50%;
  cursor: pointer;
}
input[type='color']::-webkit-color-swatch-wrapper {
  padding: 0;
}
input[type='color']::-webkit-color-swatch {
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}
input[type='color']::-moz-color-swatch {
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

/* ---- Advanced (collapsible <details>) ---- */

details.adv {
  margin-top: 28px;
}
details.adv > summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
}
details.adv > summary::-webkit-details-marker {
  display: none;
}
details.adv > summary .chev {
  transition: transform 0.2s;
  transform: rotate(-90deg);
}
details.adv[open] > summary .chev {
  transform: rotate(0deg);
}

/* ---- Customize button (shown on phones only, see layout.css) ---- */

.customize-btn {
  display: none;
  align-items: center;
  gap: 12px;
  width: 100%;
  height: 50px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  font-size: 15px;
  font-weight: 600;
  text-align: start;
  transition: border-color 0.15s;
}
.customize-btn:hover {
  border-color: var(--line-strong);
}
.customize-btn span {
  flex: 1;
}
.customize-btn .tune {
  width: 20px;
  height: 20px;
  flex: none;
}
.customize-btn .chev {
  transition: transform 0.2s;
}
.customize-btn[aria-expanded='true'] {
  border-color: var(--ink);
}
.customize-btn[aria-expanded='true'] .chev {
  transform: rotate(180deg);
}

/* Note under a switch that slides open (e.g. under "Website address on the image" when it is off). */
.switch-hint {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}
.switch-hint.open {
  grid-template-rows: 1fr;
}
.switch-hint-inner {
  overflow: hidden;
  min-height: 0;
  margin: 0;
  padding: 0 14px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--muted);
}
.switch-hint.open .switch-hint-inner {
  padding-bottom: 12px;
}
.switch-hint + .row {
  border-top: 1px solid var(--line);
}