.section--duas {
  --duas-accent: var(--color-primary, #0f766e);
  --duas-surface: var(--bg-card, #ffffff);
  --duas-surface-soft: color-mix(in srgb, var(--bg-card, #ffffff) 98%, var(--duas-accent) 2%);
  --duas-border: color-mix(in srgb, var(--border-color, #d6d6d6) 92%, var(--duas-accent) 8%);
  --duas-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
  --duas-shadow-hover: 0 10px 24px rgba(15, 23, 42, 0.06);
  --duas-radius: 22px;
  --duas-radius-sm: 16px;
}

.duas-shell {
  display: grid;
  gap: 12px;
  max-width: 860px;
  margin-inline: auto;
}

.duas-shell--session-active {
  gap: 0;
}

.duas-catalog-home,
.duas-category-content,
.duas-session,
.duas-session-list {
  display: grid;
  gap: 12px;
}

.duas-toolbar,
.duas-session-panel,
.dua-item-card,
.duas-category-card,
.duas-empty-state {
  position: relative;
  border: 1px solid var(--duas-border);
  box-shadow: var(--duas-shadow);
  border-radius: var(--duas-radius);
  background: var(--duas-surface);
}

.duas-toolbar,
.duas-session-panel,
.dua-item-card,
.duas-category-card,
.duas-empty-state {
  padding: 14px;
}

.duas-toolbar {
  display: grid;
  gap: 10px;
  position: sticky;
  top: var(--app-header-offset, 64px);
  z-index: 5;
  padding: 12px;
  background: color-mix(in srgb, var(--bg-card, #ffffff) 99%, var(--duas-accent) 1%);
  backdrop-filter: blur(6px);
}

.duas-toolbar__search {
  min-width: 0;
}

.duas-search-wrap {
  position: relative;
  width: 100%;
}

.duas-search {
  width: 100%;
  min-height: 50px;
  border-radius: 18px;
  border: 1px solid color-mix(in srgb, var(--duas-accent) 18%, var(--border-color, #d6d6d6));
  background: #fff;
  padding-inline: 14px 46px;
  font-size: 0.98rem;
  text-align: right;
  appearance: none;
  box-shadow: none;
}

.duas-search:focus,
.duas-search:focus-visible {
  border-color: color-mix(in srgb, var(--duas-accent) 34%, var(--border-color, #d6d6d6));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--duas-accent) 10%, transparent);
}

.duas-search-wrap::after {
  content: '\f002';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  inset-inline-end: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: color-mix(in srgb, var(--duas-accent) 34%, #94a3b8);
  pointer-events: none;
}

.duas-search__clear {
  position: absolute;
  inset-inline-start: 6px;
  top: 50%;
  transform: translateY(-50%);
  min-width: 34px;
  min-height: 34px;
  opacity: 0;
  pointer-events: none;
}

.duas-search__clear:not(.is-hidden) {
  opacity: 1;
  pointer-events: auto;
}

.duas-filters,
.duas-session-panel__meta,
.dua-item-card__actions,
.dua-item-card__top {
  display: flex;
  gap: 8px;
}

.duas-filters {
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 2px;
  gap: 6px;
  scrollbar-width: none;
  scroll-padding-inline: 2px;
}

.duas-filters::-webkit-scrollbar {
  display: none;
}

.duas-badge,
.duas-chip,
.duas-filter-chip,
.dua-item-card__source {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 28px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--duas-accent) 12%, var(--border-color, #d6d6d6));
  background: color-mix(in srgb, var(--duas-accent) 4%, var(--bg-card, #fff));
  color: var(--text-color, #111827);
  font-size: 0.76rem;
  font-weight: 800;
  line-height: 1;
}

.duas-filter-chip {
  flex: 0 0 auto;
  min-height: 38px;
  padding-inline: 13px;
  font-size: 0.9rem;
  background: color-mix(in srgb, var(--bg-card, #fff) 97%, var(--duas-accent) 3%);
}

.duas-filter-chip.is-active,
.section--duas .btn.is-active {
  color: #fff;
  background: var(--duas-accent);
  border-color: transparent;
}

.duas-categories-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.duas-category-card {
  display: grid;
  width: 100%;
  min-height: auto;
  padding: 14px 15px;
  text-align: right;
  align-content: start;
  border-radius: 20px;
  border-color: color-mix(in srgb, var(--duas-accent) 8%, var(--border-color, #d6d6d6));
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.duas-category-card:hover,
.duas-category-card:focus-visible {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--duas-accent) 18%, var(--border-color, #d6d6d6));
  box-shadow: var(--duas-shadow-hover);
}

.duas-category-card__top {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 10px;
}

.duas-category-card__headline {
  display: grid;
  gap: 6px;
  min-width: 0;
  text-align: right;
}

.duas-category-card__title {
  display: -webkit-box;
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.35;
  font-weight: 850;
  color: var(--text-color, #111827);
  min-height: calc(1.35em * 2);
  overflow: hidden;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.duas-category-card__meta-inline {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  color: var(--text-muted, #6b7280);
  font-size: 0.82rem;
  font-weight: 700;
}

.duas-category-card__icon,
.duas-session-panel__close {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
}

.duas-category-card__icon {
  font-size: 1rem;
  color: var(--duas-accent);
  background: color-mix(in srgb, var(--duas-accent) 8%, var(--bg-card, #fff));
}

.duas-session-panel__close {
  color: color-mix(in srgb, var(--duas-accent) 82%, #0f172a);
  background: color-mix(in srgb, var(--duas-accent) 7%, var(--bg-card, #fff));
}

.duas-session {
  gap: 10px;
}

.duas-session.is-large-text .dua-item-card__text {
  font-size: 1.5rem;
}

.duas-session-panel {
  display: grid;
  gap: 10px;
  padding: 14px 16px;
}

.duas-session-panel__top {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 12px;
}

.duas-session-panel__content {
  display: grid;
  gap: 8px;
}

.duas-session-panel__title {
  margin: 0;
  font-size: clamp(1.45rem, 3.6vw, 1.9rem);
}

.duas-session-panel__description,
.dua-item-card__reference {
  margin: 0;
  color: var(--text-muted, #6b7280);
  line-height: 1.8;
}

.dua-item-card {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: 20px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.dua-item-card.is-active {
  border-color: color-mix(in srgb, var(--duas-accent) 30%, var(--border-color, #d6d6d6));
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.05);
}

.dua-item-card__header,
.dua-item-card__footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.dua-item-card__top {
  flex-wrap: wrap;
}

.dua-item-card__text {
  margin: 0;
  font-size: clamp(1.22rem, 3vw, 1.58rem);
  line-height: 1.95;
}

.dua-item-card__source {
  color: var(--duas-accent);
}

.dua-item-card__footer {
  align-items: end;
  padding-top: 10px;
  border-top: 1px solid color-mix(in srgb, var(--duas-accent) 7%, var(--border-color, #d6d6d6));
}

.dua-item-card__actions {
  justify-content: flex-end;
  flex-wrap: wrap;
}

.duas-empty-state {
  text-align: center;
  padding: 20px 16px;
}

.section--duas .btn,
.section--duas .duas-filter-chip,
.section--duas input {
  min-height: 44px;
}

.section--duas .btn:focus-visible,
.section--duas .duas-filter-chip:focus-visible,
.section--duas .duas-category-card:focus-visible,
.section--duas .dua-item-card:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--duas-accent) 28%, transparent);
  outline-offset: 2px;
}

.duas-tone--emerald { --duas-accent: #0f766e; }
.duas-tone--indigo { --duas-accent: #4f46e5; }
.duas-tone--teal { --duas-accent: #0f766e; }
.duas-tone--gold { --duas-accent: #b7791f; }
.duas-tone--olive { --duas-accent: #5b7c2b; }
.duas-tone--blue { --duas-accent: #2563eb; }
.duas-tone--violet { --duas-accent: #7c3aed; }
.duas-tone--amber { --duas-accent: #d97706; }
.duas-tone--cyan { --duas-accent: #0891b2; }
.duas-tone--rose { --duas-accent: #e11d48; }
.duas-tone--red { --duas-accent: #dc2626; }
.duas-tone--sky { --duas-accent: #0284c7; }
.duas-tone--pink { --duas-accent: #db2777; }

@media (max-width: 760px) {
  .duas-shell {
    gap: 10px;
  }

  .duas-toolbar {
    top: var(--app-header-offset, 56px);
    padding: 10px;
    gap: 8px;
  }

  .duas-search {
    min-height: 48px;
    border-radius: 16px;
    padding-inline: 12px 42px;
    font-size: 0.95rem;
  }

  .duas-search-wrap::after {
    inset-inline-end: 14px;
  }

  .duas-filter-chip {
    min-height: 36px;
    padding-inline: 11px;
    font-size: 0.84rem;
  }

  .duas-categories-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .duas-category-card {
    padding: 13px 14px;
  }

  .duas-category-card__title {
    font-size: 1.02rem;
    min-height: auto;
  }

  .duas-category-card__meta-inline {
    font-size: 0.8rem;
  }

  .duas-category-card__icon,
  .duas-session-panel__close {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }

  .duas-session-panel {
    padding: 13px 14px;
  }

  .duas-session-panel__top,
  .dua-item-card__header,
  .dua-item-card__footer {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .dua-item-card {
    padding: 14px;
    gap: 10px;
  }

  .dua-item-card__text {
    font-size: clamp(1.16rem, 5.4vw, 1.42rem);
  }

  .dua-item-card__actions .btn {
    flex: 1 1 calc(50% - 4px);
  }
}