/* Spectrum-inspired presentation using native accessible controls.
   Guidance: https://react-spectrum.adobe.com/ToggleButtonGroup */
:root {
  --ink: #292929;
  --muted: #626262;
  --line: #d5d5d5;
  --accent: #0265dc;
  --accent-soft: #e5f0ff;
  --focus: #1473e6;
  --flag-columns: 4;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  color: var(--ink);
  background: #f5f5f5;
}
body { font-size: 14px; }
.masthead, main { max-width: 1680px; padding-inline: 24px; }
.masthead { padding-block: 10px; gap: 12px; }
.brand-icon { width: 34px; height: 34px; font-size: 24px; }
.intro { padding: 14px 0; gap: 16px; align-items: center; }
.intro .eyebrow, .intro-copy { display: none; }
h1 { font-size: clamp(24px, 3vw, 32px); }
.total { flex-direction: row; align-items: baseline; gap: 8px; margin-top: 0; }
.total strong { font-size: 28px; }
.total span { margin-top: 0; }
.brand, .eyebrow, .total strong, .az-icon, .country-en { font-family: inherit; }
.brand { letter-spacing: .04em; }
.brand-icon { background: var(--accent); color: white; border-radius: 8px; }
.brand-sub, .eyebrow, .country-zh, .method-note, footer { color: var(--muted); }
.title-dot { color: var(--accent); }
.controls { border-radius: 10px; padding: 6px 12px; gap: 8px 16px; }
.segmented { border: 1px solid var(--line); background: #fafafa; padding: 3px; gap: 3px; }
.segmented button { color: var(--ink); font-weight: 600; }
.segmented button.selected { background: var(--accent); box-shadow: none; }
.segmented button:not(.selected):hover { background: #eaeaea; }
.control-label { display: inline; color: var(--muted); font-size: 13px; }
input:checked + .switch { background: var(--accent); }
.text-button { color: var(--accent); font-weight: 500; }
.primary-button { background: var(--accent); border-radius: 8px; font-weight: 600; }
.primary-button:hover { background: #0054b6; }
button:focus-visible, a:focus-visible, select:focus-visible,
.language-control select:focus-visible, input:focus-visible + .switch {
  outline: 2px solid var(--focus); outline-offset: 3px;
}
.filter-disclosure { margin-top: 8px; background: white; border: 1px solid var(--line); border-radius: 10px; }
.filter-disclosure > summary { min-height: 44px; padding: 12px; cursor: pointer; font-weight: 600; line-height: 20px; }
.filter-disclosure > summary:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 8px; }
.filter-disclosure[open] > summary { border-bottom: 1px solid var(--line); }
.view-controls { background: white; border: 0; border-radius: 10px; margin: 0; padding: 12px; }
.view-controls fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.view-controls legend { padding: 0; margin-bottom: 6px; font-size: 13px; font-weight: 600; color: var(--muted); }
.view-controls .pattern-control, .view-controls .color-filter-control { margin-top: 12px; }
.color-filter-options { display: flex; flex-wrap: wrap; gap: 8px; }
.color-filter-options .color-picker-option { min-width: 100px; }
.column-choices { display: inline-flex; gap: 4px; padding: 3px; background: #fafafa; border: 1px solid var(--line); border-radius: 8px; }
.column-choice { position: relative; cursor: pointer; }
.column-choice input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.column-choice-content { display: flex; justify-content: center; align-items: center; gap: 10px; min-height: 44px; min-width: 76px; padding: 10px 14px; border-radius: 5px; font-weight: 600; }
.column-choice input:checked + .column-choice-content { color: white; background: var(--accent); }
.column-choice input:focus-visible + .column-choice-content { outline: 2px solid var(--focus); outline-offset: 3px; }
.column-choice:hover input:not(:checked) + .column-choice-content { background: #eaeaea; }
.column-icon { width: 22px; height: 17px; display: flex; gap: 2px; }
.column-icon i { flex: 1; border: 1px solid currentColor; border-radius: 1px; }
.pattern-choices { display: flex; flex-wrap: wrap; gap: 8px; }
.pattern-choice { display: flex; align-items: center; gap: 9px; min-height: 44px; padding: 10px 14px; background: #fff; color: var(--ink); border: 1px solid #b5b5b5; border-radius: 8px; font-size: 14px; line-height: 1.4; text-align: start; }
.pattern-choice:hover { background: #f0f0f0; border-color: #8e8e8e; }
.pattern-choice[aria-pressed="true"] { background: var(--accent-soft); color: #004da8; border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.pattern-help { color: var(--muted); font-size: 12px; line-height: 1.6; margin: 6px 0 0; }
.pattern-icon { display: block; flex-shrink: 0; width: 24px; height: 17px; border: 1px solid currentColor; border-radius: 2px; position: relative; overflow: hidden; }
.pattern-all { background: repeating-linear-gradient(90deg, transparent 0 5px, currentColor 5px 6px), repeating-linear-gradient(0deg, transparent 0 4px, currentColor 4px 5px); }
.pattern-vertical { background: linear-gradient(90deg, currentColor 33%, transparent 33% 66%, currentColor 66%); }
.pattern-horizontal { background: linear-gradient(0deg, currentColor 33%, transparent 33% 66%, currentColor 66%); }
.pattern-center::after { content: ''; position: absolute; width: 7px; height: 7px; border-radius: 50%; background: currentColor; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.pattern-diagonal { background: linear-gradient(145deg, transparent 38%, currentColor 39% 61%, transparent 62%); }
.pattern-cross { background: linear-gradient(90deg, transparent 29%, currentColor 29% 47%, transparent 47%), linear-gradient(0deg, transparent 37%, currentColor 37% 62%, transparent 62%); }
.group-nav a { background: #fff; border-color: var(--line); }
.group-nav a:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.group-nav { padding-block: 10px; gap: 6px; }
.results-meta { min-height: 40px; }
.results-meta p { margin-block: 8px; }
.flag-section { margin-bottom: 18px; scroll-margin-top: 12px; }
.section-heading { margin-bottom: 8px; gap: 8px; }
.flag-grid { grid-template-columns: repeat(var(--flag-columns), minmax(0, 1fr)); gap: 10px; }
.flag-card { border-color: var(--line); border-radius: 10px; }
.flag-card:hover { border-color: #959595; box-shadow: 0 2px 8px #0000000a; }
.flag-visual { height: clamp(96px, 13vw, 160px); padding: 28px 10px 2px; margin: 0 8px; }
.flag-image { max-height: 100%; max-width: 100%; width: auto; height: auto; object-fit: contain; }
.card-info { padding: 6px 10px 8px; }
.country-en { font-size: 18px; line-height: 1.5; color: var(--ink); margin-bottom: 3px; }
.country-zh { font-size: 14px; }
.country-bottom { min-height: 0; }
.palette { padding-top: 0; }
.hide-card { color: #626262; width: 28px; height: 28px; top: 0; inset-inline-end: 0; }
.section-count { color: var(--muted); border-color: var(--line); }
.color-picker-toggle { background: var(--accent); border: none; box-shadow: 0 4px 16px #00000026; }
.color-picker-toggle:hover { background: #0054b6; }
.color-picker { width: 360px; border-radius: 12px; padding: 20px; }
.color-picker .view-controls { border: 0; border-radius: 0; padding: 20px 0 0; margin: 20px 0 0; border-top: 1px solid var(--line); background: transparent; }
.compact-controls .pattern-choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.compact-controls .pattern-choice { font-size: 12px; padding: 9px; overflow-wrap: anywhere; }
.compact-controls .pattern-icon { width: 20px; height: 15px; }
.compact-controls .column-choices { display: flex; }
.compact-controls .column-choice { flex: 1; }
.compact-controls .column-choice-content { min-width: 0; padding: 10px; }
.compact-controls .pattern-help { font-size: 11px; }
#color-picker-title { font-weight: 600; }
.color-picker-option { background: white; }
.color-picker-option:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.color-picker-option[aria-pressed="true"] { background: var(--accent-soft); color: #004da8; border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.color-picker-option[data-color="all"] { justify-content: center; }
.toast { background: #292929; }
.toast button { color: #b3d7ff; }
.method-note { margin-bottom: 14px; }
footer { padding-top: 14px; }
@media (max-width: 800px) {
  .control-label { display: none; }
  .masthead, main { padding-inline: 16px; }
}
@media (max-width: 600px) {
  :root { --flag-columns: 2; }
  .masthead, main { padding-inline: 12px; }
  .masthead { padding-block: 8px; gap: 8px; flex-wrap: nowrap; }
  .brand { gap: 7px; font-size: 12px; }
  .brand-icon { width: 28px; height: 28px; font-size: 21px; }
  .brand-sub { font-size: 9px; }
  .language-control { width: auto; flex: 0 1 150px; gap: 0; }
  #language-label { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .language-control select { width: 100%; flex: auto; min-width: 0; padding-inline: 6px; font-size: 14px; }
  .intro { display: flex; flex-wrap: wrap; padding-block: 10px; gap: 4px 12px; }
  .intro .total { flex-direction: row; margin-top: 0; gap: 6px; }
  .total strong { font-size: 24px; }
  .total span { font-size: 11px; }
  .controls { padding: 4px 8px; gap: 2px; }
  .segmented button { padding-block: 6px; }
  .view-controls { padding: 10px; }
  .pattern-choice { flex: 1 1 calc(50% - 8px); padding: 10px; font-size: 13px; }
  .flag-grid { gap: 8px; }
  .flag-visual { margin: 0 6px; padding: 28px 4px 2px; height: 104px; }
  .card-info { padding: 4px 8px 6px; }
  .country-en { font-size: 16px; }
  [data-columns="3"] .country-bottom, [data-columns="4"] .country-bottom { display: none; }
  [data-columns="3"] .card-info, [data-columns="4"] .card-info { padding: 4px 5px 6px; }
  [data-columns="3"] .country-en { font-size: 15px; }
  [data-columns="4"] .country-en { font-size: 14px; }
  [data-columns="4"] .flag-grid { gap: 6px; }
  [data-columns="3"] .flag-visual { height: 84px; }
  [data-columns="4"] .flag-visual { margin: 0 4px; padding-inline: 0; height: 72px; }
  .color-picker { padding: 16px; }
}
@media (forced-colors: active) {
  .column-choice input:checked + .column-choice-content,
  .pattern-choice[aria-pressed="true"], .color-picker-option[aria-pressed="true"] { outline: 2px solid Highlight; outline-offset: -3px; }
}