/* Projects gallery (/curriculum/projects/ and /math/projects/). Generated markup: tools/lib/projects-gallery.mjs.
   Unit colour comes from the --unit-N tokens in assets/curriculum-system.css; the fallbacks below
   repeat those values for /math/projects/ (validate:projects-gallery-browser pins the equality). */
:is(.pg, .pg-dialog) {
  --pg-ink: var(--course-ink, #142c3b);
  --pg-muted: var(--course-muted, #405764);
  --pg-line: var(--course-border, #b4c4c0);
  --pg-blue: var(--course-blue, #124f7a);
  --pg-teal: var(--course-teal, #11675d);
  --pg-orange: #b53e20;
  --pg-card: #fff;
  --pg-wash: #f1f6f2;
  color: var(--pg-ink);
}
:is(.pg, .pg-dialog) [hidden],
.pg [hidden] {
  display: none !important;
}
.pg-math {
  margin: 0;
  background: #f7f5ee;
  color: #142c3b;
  font-family: "Atkinson Hyperlegible", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}
.pg-math button,
.pg-math input,
.pg-math select {
  font-family: inherit;
}
.pg-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}
.pg-skip {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 10;
  background: #fff;
  color: #142c3b;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 700;
}
.pg-skip:focus {
  top: 12px;
}
.pg-sitebar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  background: #fff;
  border-bottom: 1px solid #c1cdc9;
}
.pg-sitebar .brand {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  gap: 8px;
  font-weight: 700;
  color: #142c3b;
  text-decoration: none;
}
.pg-sitebar .brand span {
  font-weight: 400;
  color: #405764;
}
.pg-sitebar nav {
  display: flex;
  gap: 18px;
}
.pg-sitebar nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #124f7a;
  font-weight: 700;
}
.pg {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 20px 56px;
}
.pg a {
  color: var(--pg-blue);
}
.pg :is(a, button, input, select, summary):focus-visible,
.pg-dialog :is(a, button, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--pg-blue);
  outline-offset: 3px;
}
.pg-hero h1 {
  margin: 4px 0 12px;
  font-size: clamp(2rem, 5.4vw, 3.3rem);
  line-height: 1.05;
  text-wrap: balance;
}
.pg-eyebrow {
  margin: 0;
  font-weight: 700;
  color: var(--pg-teal);
}
.pg-lede {
  max-width: 62ch;
  margin: 0 0 12px;
}
.pg-stats {
  margin: 0 0 12px;
  color: var(--pg-muted);
}
.pg-stats strong {
  color: var(--pg-ink);
}
.pg-legend {
  max-width: 62ch;
}
.pg-legend summary {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
  color: var(--pg-blue);
  font-weight: 700;
}
.pg-legend dl {
  margin: 0 0 8px;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px 14px;
}
.pg-legend dt {
  font-weight: 700;
}
.pg-legend dd {
  margin: 0;
}

/* Filters */
.pg-tools {
  position: relative;
  margin: 20px 0 22px;
  padding: 16px;
  background: var(--pg-card);
  border: 1px solid var(--pg-line);
  border-radius: 12px;
}
.pg-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px 14px;
  align-items: end;
}
.pg-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 15px;
  font-weight: 700;
}
.pg-field-wide {
  grid-column: 1 / -1;
}
@media (min-width: 1000px) {
  .pg-field-wide {
    grid-column: span 2;
  }
}
.pg-field :is(input, select) {
  min-height: 44px;
  padding: 6px 10px;
  border: 2px solid #6d8580;
  border-radius: 8px;
  background: #fff;
  color: var(--pg-ink);
  font-size: 16px;
  font-weight: 400;
  width: 100%;
  box-sizing: border-box;
}
.pg-status {
  margin: 12px 0 0;
  font-weight: 700;
}
.pg-resume {
  margin: 8px 0 0;
  padding: 8px 12px;
  background: #fff4ea;
  border: 1px solid #d9a88a;
  border-radius: 8px;
  color: #5c2010;
}
.pg-resume a {
  color: #5c2010;
  font-weight: 700;
}

/* Grid and cards */
.pg-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr));
}
.pg-card {
  display: flex;
  background: var(--pg-card);
  border: 1px solid var(--pg-line);
  border-top: 6px solid var(--pg-unit);
  border-radius: 10px;
  overflow: hidden;
}
.pg-card > article {
  display: flex;
  flex-direction: column;
  width: 100%;
}
.pg-art {
  background: #fffdf6;
  border-bottom: 1px solid var(--pg-line);
}
.pg-svg {
  display: block;
  width: 100%;
  height: auto;
}
.pg-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
  padding: 14px 16px 16px;
}
.pg-meta {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pg-chip {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 1px 10px;
  border: 1px solid var(--pg-line);
  border-radius: 999px;
  background: var(--pg-wash);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
}
.pg-chip-unit {
  border-left: 8px solid var(--pg-unit);
  border-radius: 6px;
  background: #fff;
}
.pg-body h3 {
  margin: 0;
  font-size: 1.3rem;
  line-height: 1.2;
  text-wrap: balance;
}
.pg-question {
  margin: 0;
  font-weight: 700;
}
.pg-saved {
  margin: 0;
  padding: 6px 10px;
  background: #fff4ea;
  border: 1px solid #d9a88a;
  border-radius: 8px;
  color: #5c2010;
  font-weight: 700;
  font-size: 15px;
}
.pg-facts {
  margin: 0;
  display: grid;
  gap: 6px;
  font-size: 15px;
}
.pg-facts dt {
  font-weight: 700;
  color: var(--pg-muted);
}
.pg-facts dd {
  margin: 0;
}
.pg-versions {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-size: 15px;
}
.pg-label {
  font-weight: 700;
  color: var(--pg-muted);
}
.pg-version-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pg-note {
  color: var(--pg-muted);
}
.pg-ver,
.pg-ver-this {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0 10px;
  box-sizing: border-box;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}
.pg-ver {
  border: 2px solid var(--pg-blue);
  background: #fff;
}
.pg-ver-this {
  border: 2px dashed var(--pg-muted);
  background: var(--pg-wash);
  color: var(--pg-ink);
}
.pg-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 6px;
}
.pg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 6px 16px;
  box-sizing: border-box;
  border: 2px solid var(--pg-teal);
  border-radius: 8px;
  background: #fff;
  color: var(--pg-teal);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.pg a.pg-btn {
  color: var(--pg-teal);
}
.pg-btn:hover {
  background: var(--pg-wash);
}
.pg a.pg-primary,
.pg-dialog a.pg-primary {
  background: var(--pg-teal);
  color: #fff;
}
.pg a.pg-primary:hover,
.pg-dialog a.pg-primary:hover {
  background: var(--pg-ink);
}
.pg a.pg-continue,
.pg-dialog a.pg-continue {
  order: -1;
  flex: 1 1 100%;
  background: var(--pg-orange);
  border-color: var(--pg-orange);
  color: #fff;
  font-size: 17px;
}
.pg a.pg-continue:hover,
.pg-dialog a.pg-continue:hover {
  background: #8f2f17;
}
.pg-card.has-saved {
  box-shadow: 0 0 0 3px #f0c4a8;
}
.pg-dialog a.pg-btn {
  color: var(--pg-teal);
}
.pg-empty {
  padding: 28px 16px;
  text-align: center;
  background: var(--pg-card);
  border: 1px dashed var(--pg-muted);
  border-radius: 12px;
}
.pg-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 20px 36px;
  color: #405764;
  font-size: 15px;
}
.pg-footer a {
  color: #124f7a;
  text-decoration: underline;
}

/* Detail dialog */
.pg-dialog {
  width: min(880px, calc(100vw - 24px));
  max-height: calc(100vh - 24px);
  max-height: calc(100dvh - 24px);
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: var(--pg-card);
  box-shadow: 0 24px 64px rgba(10, 28, 38, 0.45);
  overflow: auto;
}
.pg-dialog::backdrop {
  background: rgba(16, 36, 46, 0.62);
}
.pg-d-inner {
  padding: 18px 20px 24px;
  border-top: 8px solid var(--pg-unit);
  font-family: "Atkinson Hyperlegible", "Hanken Grotesk", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}
.pg-d-close {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  width: max-content;
  margin: 0 0 10px auto;
}
.pg-d-head {
  display: grid;
  gap: 12px;
  align-items: center;
}
@media (min-width: 680px) {
  .pg-d-head {
    grid-template-columns: 340px 1fr;
    gap: 20px;
  }
}
.pg-d-art {
  background: #fffdf6;
  border: 1px solid var(--pg-line);
  border-radius: 10px;
  overflow: hidden;
}
.pg-d-title h2 {
  margin: 6px 0 0;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1.1;
  outline: none;
}
.pg-d-sec {
  margin-top: 20px;
}
.pg-d-sec h3 {
  margin: 0 0 6px;
  font-size: 1.15rem;
}
.pg-d-sec p,
.pg-d-sec ul,
.pg-d-sec ol {
  margin: 0 0 8px;
}
.pg-d-sec :is(ul, ol) {
  padding-left: 1.3em;
}
.pg-d-rubric {
  display: grid;
  gap: 10px;
  margin: 0;
}
@media (min-width: 680px) {
  .pg-d-rubric {
    grid-template-columns: 1fr 1fr;
  }
}
.pg-d-rubric > div {
  padding: 8px 12px;
  background: var(--pg-wash);
  border-radius: 8px;
}
.pg-d-rubric dt {
  font-weight: 700;
}
.pg-d-rubric dd {
  margin: 2px 0 0;
  font-size: 15px;
}
.pg-d-sec details {
  margin: 8px 0;
  border: 1px solid var(--pg-line);
  border-radius: 8px;
  padding: 0 12px;
}
.pg-d-sec summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  cursor: pointer;
  font-weight: 700;
}
.pg-d-rows > li {
  margin-bottom: 10px;
}
.pg-d-rows small {
  display: block;
  color: var(--pg-muted);
}
.pg-d-actions {
  margin-top: 22px;
}
.pg-d-key {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
@media (max-width: 520px) {
  .pg {
    padding: 20px 16px 44px;
  }
  .pg-tools {
    padding: 12px;
  }
  .pg-d-inner {
    padding: 14px 16px 20px;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .pg-btn,
  .pg-card {
    transition: background-color 0.15s ease;
  }
}
@media (forced-colors: active) {
  .pg-btn,
  .pg-ver,
  .pg-ver-this,
  .pg-field :is(input, select),
  .pg-chip {
    border-color: ButtonText;
  }
  .pg-card {
    border-color: CanvasText;
  }
}
@media print {
  .pg-tools,
  .pg-actions,
  .pg-sitebar {
    display: none;
  }
  .pg-card {
    break-inside: avoid;
  }
}