:root {
  --learning-surface: linear-gradient(180deg, #22252b, #1a1c22);
}

body:has(#v-problemas.on) .quiron-sidebar a[href="#problemas"],
body:has(#v-projetos.on) .quiron-sidebar a[href="#projetos"],
body:has(#v-estrategias.on) .quiron-sidebar a[href="#estrategias"] {
  border-color: #3b4b69;
  background: #27344c;
  color: #d3e1ff;
}

.learning-intro.ph {
  display: block;
  padding: clamp(35px, 5vw, 62px) 0 0;
}

.learning-intro.ph h1 {
  max-width: none;
  margin: 0;
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: -.045em;
}

.learning-intro.ph p { max-width: 75ch; font-size: 16px; }
.learning-intro.ph .learning-kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.learning-cta { margin-top: 18px; }
.learning-section-head { margin: 32px 0 14px; }
.learning-section-head h2 { font-size: 24px; }
.learning-section-head p { margin-top: 5px; color: var(--muted); font-size: 15px; }
.learning-arrow { color: var(--accent); }

#pjHome .pj-card {
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
  margin-top: 0;
  padding: 20px;
  border-color: var(--line2);
  background: var(--learning-surface);
}

#pjHome .pj-card:hover { border-color: var(--accent); }

#pjHome .num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #28364f;
  font: 600 15px var(--body);
}

#pjHome .pj-card h3 { font-size: 23px; }
#pjHome .pj-card p { max-width: 70ch; font-size: 15px; }
#pjHome .meta { margin: 10px 0 0; }

.problem-tabs a {
  display: flex;
  flex-direction: column;
  padding: 8px 8px 14px;
  background: var(--learning-surface);
}

.problem-tabs a.on { background: var(--learning-surface); }
.problem-tabs strong, .problem-tabs small { margin-inline: 8px; }
.learning-route {
  display: flex;
  align-items: end;
  min-height: 58px;
  margin-bottom: 12px;
  padding: 9px 10px;
  border-radius: 8px;
  background: #212f4b;
  color: #d9e5fc;
  font-size: 12px;
}
.learning-green .learning-route { background: #203a34; color: #d1e9e1; }
.learning-sand .learning-route { background: #3e352a; color: #f1e0cc; }
#problemQuant .problem-row { background: var(--learning-surface); }
#problemQuant .problem-summary { margin: 12px 0; }
#problemQuant .problem-summary span { padding: 3px 10px; border: 1px solid var(--line2); border-radius: 999px; font-size: 13px; }

#strategyBrowse { margin-top: 24px; }

#strategyBrowse .strategy-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  padding: 0;
  border: 0;
  background: transparent;
}
#strategyBrowse .strategy-tools > label { flex: 1 1 225px; }
#strategyBrowse .strategy-filter-fields label { grid-column: auto; }
.strategy-filter-panel { flex: none; }
.strategy-filter-panel[open] { flex: 1 1 100%; }
.strategy-filter-panel summary {
  width: max-content;
  padding: 7px 14px;
  border: 1px solid var(--line2);
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
}
.strategy-filter-panel summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.strategy-filter-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(145px, 100%), 1fr));
  gap: 10px;
  margin-top: 10px;
  padding: 14px;
  border: 1px solid var(--line2);
  border-radius: 12px;
  background: var(--panel);
}

#strategyBrowse .strategy-grid { grid-template-columns: 1fr; gap: 9px; }
#strategyBrowse .strategy-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding-right: 12px;
  overflow: visible;
  border-color: var(--line2);
  background: var(--learning-surface);
}
#strategyBrowse .strategy-card:is(:hover, :focus-within) { border-color: #516580; }
#strategyBrowse .strategy-card-link {
  display: flex;
  flex: 1;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  gap: 14px;
  padding: 13px 14px;
}
#strategyBrowse .strategy-card-link > div:first-child { min-width: 0; }
#strategyBrowse .strategy-card h2 { font-size: 17px; }
#strategyBrowse .strategy-card p {
  margin-top: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
}
.strategy-row-meta { display: flex; flex: none; align-items: center; gap: 10px; }
.strategy-row-meta .strategy-family, .strategy-done {
  padding: 2px 8px;
  border: 1px solid var(--line2);
  border-radius: 999px;
  font-size: 12px;
}
.strategy-done { color: #a4d8c8; }
#strategyBrowse .strategy-favorite { flex: none; width: 32px; height: 32px; font-size: 18px; }

@media (max-width: 720px) {
  .problem-tabs { grid-template-columns: 1fr; }
  .learning-route { min-height: 0; margin-bottom: 7px; }
  #pjHome .pj-card { padding: 14px; gap: 10px; }
  #strategyBrowse .strategy-card-link { flex-direction: column; align-items: flex-start; gap: 6px; }
  #strategyBrowse .strategy-card-link > div:first-child { max-width: 100%; }
  .strategy-row-meta { flex-wrap: wrap; }
}