/* ==========================================================================
   SDB — Design System · App Surface domain
   --------------------------------------------------------------------------
   Camada de produto/aplicação para plataformas de front-office (dashboards,
   gestão de trabalho, fluxos conversacionais). Opt-in: só carrega quando um
   plugin consumidor a pede via sdb_ds_require(['app']) / sdb_design_system_require().
   Depende do domínio `core` (tokens e foundations).

   Bloco 1 — shell de aplicação (sidebar, topbar, área de conteúdo).
   Aditivo e auto-contido: todos os seletores usam o prefixo `.sdb-app`,
   pelo que não altera o output visual de nenhum componente existente.
   ========================================================================== */

:root {
  /* 3.1 — Tokens do shell de aplicação (configuráveis, com fallback declarado). */
  --sdb-app-sidebar-width: 264px;
  --sdb-app-sidebar-width-collapsed: 72px;
  --sdb-app-topbar-height: 60px;
  --sdb-app-content-max-width: 1440px;
  --sdb-app-content-padding: var(--sdb-space-6, 24px);
  --sdb-app-gap: var(--sdb-space-4, 16px);
  --sdb-app-surface: var(--sdb-color-surface, #fff);
  --sdb-app-surface-muted: var(--sdb-color-background, #f5f8fb);
  --sdb-app-border: var(--sdb-color-border, #eef3f8);
  --sdb-app-sidebar-bg: var(--sdb-color-surface, #fff);
  --sdb-app-topbar-bg: var(--sdb-color-surface, #fff);
  --sdb-app-shell-z: var(--sdb-z-app-shell, 200);
}

/* ==========================================================================
   Bloco 3 — Tokens da App Surface (todos aditivos; nenhum redefine tokens
   existentes do core, garantindo não-quebra).
   ========================================================================== */
:root {
  /* 3.2 — Paleta de matizes nomeadas para estados dinâmicos.
     Cada matiz é um trio bg/fg/border. Contraste fg-sobre-bg validado WCAG AA
     (>= 4.5:1). Rácios medidos (fg/bg):
       blue 7.67 · teal 6.96 · green 6.77 · lime 6.98 · amber 5.79
       orange 6.01 · red 6.84 · pink 6.72 · purple 7.80 · grey 7.37
     Plugins com estados configuráveis pelo utilizador devem mapear cada estado
     para uma matiz nomeada em vez de inventar cores. */
  --sdb-hue-blue-bg: #E4F1FF;   --sdb-hue-blue-fg: #0B4A8F;   --sdb-hue-blue-border: #A9CDF5;
  --sdb-hue-teal-bg: #DDF3F1;   --sdb-hue-teal-fg: #0C5A55;   --sdb-hue-teal-border: #9FD7D2;
  --sdb-hue-green-bg: #E4F5EA;  --sdb-hue-green-fg: #1E5F34;  --sdb-hue-green-border: #A9D8B8;
  --sdb-hue-lime-bg: #EEF6DC;   --sdb-hue-lime-fg: #425A0B;   --sdb-hue-lime-border: #CBE08D;
  --sdb-hue-amber-bg: #FFF3D6;  --sdb-hue-amber-fg: #8A5200;  --sdb-hue-amber-border: #F4D48A;
  --sdb-hue-orange-bg: #FFEBDD; --sdb-hue-orange-fg: #9A3C0A; --sdb-hue-orange-border: #F6C3A0;
  --sdb-hue-red-bg: #FDECEC;    --sdb-hue-red-fg: #A11B1B;    --sdb-hue-red-border: #F3B4B4;
  --sdb-hue-pink-bg: #FCE7F0;   --sdb-hue-pink-fg: #9C1458;   --sdb-hue-pink-border: #F2B6D0;
  --sdb-hue-purple-bg: #F0ECFB; --sdb-hue-purple-fg: #4B32A8; --sdb-hue-purple-border: #CFC2F0;
  --sdb-hue-grey-bg: #EEF2F6;   --sdb-hue-grey-fg: #41505E;   --sdb-hue-grey-border: #CBD5DF;

  /* 3.3 — Estados de interação. hover/selected/focus-ring já existem no core e
     são reutilizados; aqui adicionam-se apenas os que faltavam. */
  --sdb-state-drag-bg: var(--sdb-hue-blue-bg, #E4F1FF);
  --sdb-state-focus-ring-on-color: 0 0 0 2px rgba(255, 255, 255, 0.9), 0 0 0 4px rgba(11, 74, 143, 0.9);

  /* 3.4 — Elevação/z-index. A escala já está consolidada no core
     (--sdb-z-base/dropdown/sticky/overlay/modal/toast e --sdb-elevation-0..4).
     Aqui apenas se preenchem as lacunas necessárias à superfície app. */
  --sdb-z-app-shell: var(--sdb-z-sticky, 200);
  --sdb-elevation-5: 0 24px 48px rgba(31, 42, 54, 0.20);

  /* 3.5 — Paleta de data-viz (categórica, distinguível, coerente com a marca). */
  --sdb-chart-1: #0058B7;
  --sdb-chart-2: #009BD8;
  --sdb-chart-3: #2F8F4E;
  --sdb-chart-4: #F59E0B;
  --sdb-chart-5: #8A1F3D;
  --sdb-chart-6: #6A4BB5;
  --sdb-chart-7: #3EC7B7;
  --sdb-chart-8: #F26722;
  --sdb-chart-grid: var(--sdb-color-border, #EEF3F8);
  --sdb-chart-label: var(--sdb-color-muted, #8E9AA7);
}

/* ==========================================================================
   Bloco 4.1 — Pessoas (avatar, avatar-stack, person-chip)
   ========================================================================== */
.sdb-avatar {
  --_size: var(--sdb-avatar-size, 40px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: var(--_size);
  block-size: var(--_size);
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--sdb-hue-blue-bg);
  color: var(--sdb-hue-blue-fg);
  font-family: var(--sdb-font-heading, inherit);
  font-weight: var(--sdb-font-weight-bold, 700);
  font-size: calc(var(--_size) * 0.4);
  line-height: 1;
  text-transform: uppercase;
  overflow: hidden;
  user-select: none;
}

.sdb-avatar > img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
}

.sdb-avatar--sm { --sdb-avatar-size: 28px; }
.sdb-avatar--md { --sdb-avatar-size: 40px; }
.sdb-avatar--lg { --sdb-avatar-size: 56px; }

.sdb-avatar-stack {
  display: inline-flex;
  align-items: center;
}

.sdb-avatar-stack > .sdb-avatar,
.sdb-avatar-stack > .sdb-avatar-stack__more {
  margin-inline-start: -8px;
  border: 2px solid var(--sdb-app-surface, #fff);
}

.sdb-avatar-stack > :first-child {
  margin-inline-start: 0;
}

.sdb-avatar-stack__more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: var(--sdb-avatar-size, 40px);
  block-size: var(--sdb-avatar-size, 40px);
  border-radius: 50%;
  background: var(--sdb-hue-grey-bg);
  color: var(--sdb-hue-grey-fg);
  font-size: 0.78rem;
  font-weight: 700;
}

.sdb-person-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  padding: 3px var(--sdb-space-3, 12px) 3px 3px;
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-pill, 999px);
  background: var(--sdb-color-surface, #fff);
  max-inline-size: 100%;
}

.sdb-person-chip__label {
  font-size: 0.85rem;
  font-weight: var(--sdb-font-weight-medium, 500);
  color: var(--sdb-color-title, #364048);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sdb-person-chip--removable {
  padding-inline-end: 3px;
}

.sdb-person-chip__remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 22px;
  block-size: 22px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--sdb-color-muted, #8e9aa7);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}

.sdb-person-chip__remove:hover {
  background: var(--sdb-hue-red-bg);
  color: var(--sdb-hue-red-fg);
}

.sdb-person-chip__remove:focus-visible {
  outline: none;
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

/* ==========================================================================
   Bloco 4.2 — Status pill (estado colorido; estático + interativo)
   ========================================================================== */
.sdb-status-pill {
  --_bg: var(--sdb-status-pill-bg, var(--sdb-hue-grey-bg));
  --_fg: var(--sdb-status-pill-fg, var(--sdb-hue-grey-fg));
  --_border: var(--sdb-status-pill-border, var(--sdb-hue-grey-border));
  display: inline-flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  min-block-size: 26px;
  padding: 3px var(--sdb-space-3, 12px);
  border: 1px solid var(--_border);
  border-radius: var(--sdb-radius-pill, 999px);
  background: var(--_bg);
  color: var(--_fg);
  font-family: var(--sdb-font-meta, inherit);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
}

.sdb-status-pill::before {
  content: "";
  inline-size: 8px;
  block-size: 8px;
  border-radius: 50%;
  background: currentColor;
  flex: 0 0 auto;
}

.sdb-status-pill--no-dot::before { display: none; }

/* Interactive variant: a button that opens a state picker (via behavior menu). */
button.sdb-status-pill,
.sdb-status-pill--interactive {
  cursor: pointer;
  transition: filter 160ms ease;
}

button.sdb-status-pill:hover,
.sdb-status-pill--interactive:hover {
  filter: brightness(0.97);
}

button.sdb-status-pill:focus-visible,
.sdb-status-pill--interactive:focus-visible {
  outline: none;
  box-shadow: var(--sdb-state-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

.sdb-status-pill--interactive::after {
  content: "";
  inline-size: 0;
  block-size: 0;
  margin-inline-start: 2px;
  border-inline: 4px solid transparent;
  border-block-start: 5px solid currentColor;
}

/* Hue mapping — a status maps to a named hue instead of inventing colours. */
.sdb-status-pill--blue { --sdb-status-pill-bg: var(--sdb-hue-blue-bg); --sdb-status-pill-fg: var(--sdb-hue-blue-fg); --sdb-status-pill-border: var(--sdb-hue-blue-border); }
.sdb-status-pill--teal { --sdb-status-pill-bg: var(--sdb-hue-teal-bg); --sdb-status-pill-fg: var(--sdb-hue-teal-fg); --sdb-status-pill-border: var(--sdb-hue-teal-border); }
.sdb-status-pill--green { --sdb-status-pill-bg: var(--sdb-hue-green-bg); --sdb-status-pill-fg: var(--sdb-hue-green-fg); --sdb-status-pill-border: var(--sdb-hue-green-border); }
.sdb-status-pill--lime { --sdb-status-pill-bg: var(--sdb-hue-lime-bg); --sdb-status-pill-fg: var(--sdb-hue-lime-fg); --sdb-status-pill-border: var(--sdb-hue-lime-border); }
.sdb-status-pill--amber { --sdb-status-pill-bg: var(--sdb-hue-amber-bg); --sdb-status-pill-fg: var(--sdb-hue-amber-fg); --sdb-status-pill-border: var(--sdb-hue-amber-border); }
.sdb-status-pill--orange { --sdb-status-pill-bg: var(--sdb-hue-orange-bg); --sdb-status-pill-fg: var(--sdb-hue-orange-fg); --sdb-status-pill-border: var(--sdb-hue-orange-border); }
.sdb-status-pill--red { --sdb-status-pill-bg: var(--sdb-hue-red-bg); --sdb-status-pill-fg: var(--sdb-hue-red-fg); --sdb-status-pill-border: var(--sdb-hue-red-border); }
.sdb-status-pill--pink { --sdb-status-pill-bg: var(--sdb-hue-pink-bg); --sdb-status-pill-fg: var(--sdb-hue-pink-fg); --sdb-status-pill-border: var(--sdb-hue-pink-border); }
.sdb-status-pill--purple { --sdb-status-pill-bg: var(--sdb-hue-purple-bg); --sdb-status-pill-fg: var(--sdb-hue-purple-fg); --sdb-status-pill-border: var(--sdb-hue-purple-border); }
.sdb-status-pill--grey { --sdb-status-pill-bg: var(--sdb-hue-grey-bg); --sdb-status-pill-fg: var(--sdb-hue-grey-fg); --sdb-status-pill-border: var(--sdb-hue-grey-border); }

/* ==========================================================================
   Bloco 4.3 — Combobox / multi-select
   ========================================================================== */
.sdb-combobox {
  position: relative;
  display: block;
  inline-size: 100%;
}

.sdb-combobox__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sdb-space-2, 8px);
  margin-block-end: var(--sdb-space-2, 8px);
}

.sdb-combobox__chips:empty { display: none; }

.sdb-combobox__input {
  inline-size: 100%;
  min-block-size: 40px;
  padding: var(--sdb-space-2, 8px) var(--sdb-space-3, 12px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-color-surface, #fff);
  color: var(--sdb-color-title, #364048);
  font: inherit;
}

.sdb-combobox__input:focus-visible {
  outline: none;
  border-color: var(--sdb-color-primary, #0058b7);
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

.sdb-combobox__list {
  position: absolute;
  z-index: var(--sdb-z-dropdown, 300);
  inset-inline: 0;
  margin-block-start: 4px;
  max-block-size: 260px;
  overflow-y: auto;
  padding: var(--sdb-space-1, 4px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-color-surface, #fff);
  box-shadow: var(--sdb-elevation-3, 0 12px 24px rgba(31, 42, 54, 0.12));
  list-style: none;
}

.sdb-combobox__option {
  display: flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  padding: var(--sdb-space-2, 8px) var(--sdb-space-3, 12px);
  border-radius: var(--sdb-radius-sm, 6px);
  color: var(--sdb-color-title, #364048);
  cursor: pointer;
}

.sdb-combobox__option:hover,
.sdb-combobox__option.is-active {
  background: var(--sdb-state-hover-bg, rgba(0, 88, 183, 0.06));
}

.sdb-combobox__option[aria-selected="true"] {
  color: var(--sdb-color-primary, #0058b7);
  font-weight: var(--sdb-font-weight-semibold, 600);
}

/* ==========================================================================
   Bloco 4.4 — Datepicker (painel construído pela camada de comportamento)
   ========================================================================== */
.sdb-datepicker {
  position: relative;
  display: block;
}

.sdb-datepicker__panel {
  position: absolute;
  z-index: var(--sdb-z-dropdown, 300);
  margin-block-start: 4px;
  padding: var(--sdb-space-3, 12px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-color-surface, #fff);
  box-shadow: var(--sdb-elevation-3, 0 12px 24px rgba(31, 42, 54, 0.12));
  inline-size: max-content;
}

.sdb-datepicker__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sdb-space-3, 12px);
  margin-block-end: var(--sdb-space-2, 8px);
  color: var(--sdb-color-title, #364048);
  font-weight: var(--sdb-font-weight-semibold, 600);
}

.sdb-datepicker__nav {
  inline-size: 32px;
  block-size: 32px;
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-sm, 6px);
  background: var(--sdb-color-surface, #fff);
  color: var(--sdb-color-title, #364048);
  cursor: pointer;
}

.sdb-datepicker__nav:focus-visible {
  outline: none;
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

.sdb-datepicker__grid {
  display: grid;
  grid-template-columns: repeat(7, 34px);
  gap: 2px;
  text-align: center;
}

.sdb-datepicker__wd {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--sdb-color-muted, #8e9aa7);
  padding-block: 4px;
}

.sdb-datepicker__day {
  inline-size: 34px;
  block-size: 34px;
  border: 0;
  border-radius: var(--sdb-radius-sm, 6px);
  background: transparent;
  color: var(--sdb-color-title, #364048);
  cursor: pointer;
  font: inherit;
}

.sdb-datepicker__day:hover { background: var(--sdb-state-hover-bg, rgba(0, 88, 183, 0.06)); }

.sdb-datepicker__day.is-selected,
.sdb-datepicker__day[aria-selected="true"] {
  background: var(--sdb-color-primary, #0058b7);
  color: #fff;
}

.sdb-datepicker__day:focus-visible {
  outline: none;
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

/* Range variant: two inputs side by side. */
.sdb-datepicker--range {
  display: flex;
  gap: var(--sdb-space-3, 12px);
}

/* ==========================================================================
   Bloco 4.5 — Família conversacional (thread, comment, composer, filechip)
   ========================================================================== */
.sdb-thread {
  display: flex;
  flex-direction: column;
  gap: var(--sdb-space-4, 16px);
}

.sdb-comment {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--sdb-space-3, 12px);
}

.sdb-comment__body {
  min-inline-size: 0;
}

.sdb-comment__header {
  display: flex;
  align-items: baseline;
  gap: var(--sdb-space-2, 8px);
  margin-block-end: 2px;
}

.sdb-comment__author {
  font-weight: var(--sdb-font-weight-semibold, 600);
  color: var(--sdb-color-title, #364048);
}

.sdb-comment__meta {
  font-family: var(--sdb-font-meta, inherit);
  font-size: 0.78rem;
  color: var(--sdb-color-muted, #8e9aa7);
}

.sdb-comment__content {
  color: var(--sdb-color-text, #6b7785);
  line-height: 1.6;
}

.sdb-comment__content > :first-child { margin-block-start: 0; }
.sdb-comment__content > :last-child { margin-block-end: 0; }

.sdb-composer {
  display: flex;
  flex-direction: column;
  gap: var(--sdb-space-3, 12px);
  padding: var(--sdb-space-3, 12px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-color-surface, #fff);
}

.sdb-composer__field {
  inline-size: 100%;
  min-block-size: 88px;
  padding: var(--sdb-space-3, 12px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-sm, 6px);
  background: var(--sdb-color-surface, #fff);
  color: var(--sdb-color-title, #364048);
  font: inherit;
  resize: vertical;
}

.sdb-composer__field:focus-visible {
  outline: none;
  border-color: var(--sdb-color-primary, #0058b7);
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

.sdb-composer__footer {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sdb-space-3, 12px);
}

.sdb-composer__slot {
  display: flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
}

.sdb-composer__slot--primary {
  margin-inline-start: auto;
}

.sdb-filechip {
  display: inline-flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  padding: var(--sdb-space-2, 8px) var(--sdb-space-3, 12px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-color-background, #f5f8fb);
  max-inline-size: 100%;
}

.sdb-filechip__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 28px;
  block-size: 28px;
  border-radius: var(--sdb-radius-sm, 6px);
  background: var(--sdb-hue-blue-bg);
  color: var(--sdb-hue-blue-fg);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  flex: 0 0 auto;
}

.sdb-filechip__name {
  font-size: 0.85rem;
  color: var(--sdb-color-title, #364048);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sdb-filechip__size {
  font-size: 0.75rem;
  color: var(--sdb-color-muted, #8e9aa7);
  flex: 0 0 auto;
}

.sdb-filechip__action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 26px;
  block-size: 26px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--sdb-color-muted, #8e9aa7);
  cursor: pointer;
  flex: 0 0 auto;
}

.sdb-filechip__action:hover { background: var(--sdb-state-hover-bg, rgba(0, 88, 183, 0.06)); color: var(--sdb-color-primary, #0058b7); }
.sdb-filechip__action:focus-visible { outline: none; box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22)); }

/* ==========================================================================
   Bloco 4.6 — Board (kanban) [experimental]
   ========================================================================== */
.sdb-board {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(260px, 1fr);
  gap: var(--sdb-space-4, 16px);
  overflow-x: auto;
  padding-block-end: var(--sdb-space-2, 8px);
}

.sdb-board__column {
  display: flex;
  flex-direction: column;
  gap: var(--sdb-space-3, 12px);
  padding: var(--sdb-space-3, 12px);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-app-surface-muted, #f5f8fb);
  min-block-size: 120px;
}

.sdb-board__column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sdb-space-2, 8px);
  font-family: var(--sdb-font-meta, inherit);
  font-weight: 700;
  color: var(--sdb-color-title, #364048);
}

.sdb-board__count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-inline-size: 22px;
  padding: 0 6px;
  border-radius: var(--sdb-radius-pill, 999px);
  background: var(--sdb-hue-grey-bg);
  color: var(--sdb-hue-grey-fg);
  font-size: 0.75rem;
}

.sdb-board__dropzone {
  display: flex;
  flex-direction: column;
  gap: var(--sdb-space-2, 8px);
  min-block-size: 40px;
  border-radius: var(--sdb-radius-sm, 6px);
}

.sdb-board__column.is-dropzone-active {
  outline: 2px dashed var(--sdb-color-primary, #0058b7);
  outline-offset: 2px;
  background: var(--sdb-state-drag-bg, var(--sdb-hue-blue-bg));
}

.sdb-board__card {
  padding: var(--sdb-space-3, 12px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-color-surface, #fff);
  box-shadow: var(--sdb-elevation-1, 0 1px 2px rgba(31, 42, 54, 0.06));
  cursor: grab;
}

.sdb-board__card.is-dragging {
  opacity: 0.6;
  cursor: grabbing;
}

.sdb-board__card:focus-visible {
  outline: none;
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

/* ==========================================================================
   Bloco 4.7 — View switcher (segmented control)
   ========================================================================== */
.sdb-view-switcher {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-app-surface-muted, #f5f8fb);
  gap: 2px;
}

.sdb-view-switcher__option {
  display: inline-flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  min-block-size: 34px;
  padding: 0 var(--sdb-space-3, 12px);
  border: 0;
  border-radius: var(--sdb-radius-sm, 6px);
  background: transparent;
  color: var(--sdb-color-text, #6b7785);
  font: inherit;
  font-weight: var(--sdb-font-weight-medium, 500);
  cursor: pointer;
}

.sdb-view-switcher__option[aria-pressed="true"],
.sdb-view-switcher__option.is-active {
  background: var(--sdb-color-surface, #fff);
  color: var(--sdb-color-primary, #0058b7);
  box-shadow: var(--sdb-elevation-1, 0 1px 2px rgba(31, 42, 54, 0.06));
}

.sdb-view-switcher__option:focus-visible {
  outline: none;
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

/* ==========================================================================
   Bloco 4.8 — Tabela v2 (variantes ADITIVAS de sdb-table; não alteram a base)
   ========================================================================== */
.sdb-table--sticky-header thead th {
  position: sticky;
  inset-block-start: 0;
  z-index: var(--sdb-z-sticky, 100);
  background: var(--sdb-color-surface, #fff);
}

.sdb-table__group-row > * {
  background: var(--sdb-app-surface-muted, #f5f8fb);
  font-family: var(--sdb-font-meta, inherit);
  font-weight: 700;
  color: var(--sdb-color-title, #364048);
}

.sdb-table__group-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  border: 0;
  background: transparent;
  font: inherit;
  font-weight: 700;
  color: inherit;
  cursor: pointer;
}

.sdb-table th[aria-sort] {
  cursor: pointer;
  user-select: none;
}

.sdb-table th[aria-sort]::after {
  content: "↕";
  margin-inline-start: 6px;
  color: var(--sdb-color-muted, #8e9aa7);
  font-size: 0.8em;
}

.sdb-table th[aria-sort="ascending"]::after { content: "↑"; color: var(--sdb-color-primary, #0058b7); }
.sdb-table th[aria-sort="descending"]::after { content: "↓"; color: var(--sdb-color-primary, #0058b7); }

.sdb-table__select {
  inline-size: 40px;
  text-align: center;
}

.sdb-table tr[aria-selected="true"] > * {
  background: var(--sdb-state-selected-bg, rgba(0, 88, 183, 0.1));
}

/* Bulk actions bar — front-office capable (a sdb-admin-bulk-actions é admin-only). */
.sdb-bulk-bar {
  display: flex;
  align-items: center;
  gap: var(--sdb-space-4, 16px);
  padding: var(--sdb-space-3, 12px) var(--sdb-space-4, 16px);
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  background: var(--sdb-color-surface, #fff);
  box-shadow: var(--sdb-elevation-2, 0 4px 12px rgba(31, 42, 54, 0.08));
}

.sdb-bulk-bar__count {
  font-weight: var(--sdb-font-weight-semibold, 600);
  color: var(--sdb-color-title, #364048);
}

.sdb-bulk-bar__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  margin-inline-start: auto;
}

.sdb-bulk-bar[hidden] { display: none; }

/* ==========================================================================
   Bloco 4.9 — File preview + lightbox [experimental]
   ========================================================================== */
.sdb-file-preview {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--sdb-space-3, 12px);
}

.sdb-file-preview__item {
  display: block;
  border: 1px solid var(--sdb-color-border, #eef3f8);
  border-radius: var(--sdb-radius-md, 10px);
  overflow: hidden;
  background: var(--sdb-color-background, #f5f8fb);
  cursor: zoom-in;
}

.sdb-file-preview__thumb {
  aspect-ratio: 4 / 3;
  inline-size: 100%;
  object-fit: cover;
  display: block;
}

.sdb-file-preview__caption {
  padding: var(--sdb-space-2, 8px) var(--sdb-space-3, 12px);
  font-size: 0.8rem;
  color: var(--sdb-color-text, #6b7785);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sdb-lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--sdb-z-modal, 1000);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sdb-space-6, 24px);
  background: rgba(31, 42, 54, 0.82);
}

.sdb-lightbox__media {
  max-inline-size: 92vw;
  max-block-size: 88vh;
  object-fit: contain;
  border-radius: var(--sdb-radius-md, 10px);
}

.sdb-lightbox__close {
  position: absolute;
  inset-block-start: var(--sdb-space-4, 16px);
  inset-inline-end: var(--sdb-space-4, 16px);
  inline-size: 44px;
  block-size: 44px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
}

.sdb-lightbox__close:focus-visible {
  outline: none;
  box-shadow: var(--sdb-state-focus-ring-on-color, 0 0 0 3px rgba(255, 255, 255, 0.9));
}

/* ==========================================================================
   Bloco 4.10 — Primitivas de gráficos (CSS puro) [experimental]
   O plugin calcula e injeta os valores (--sdb-chart-value, --sdb-chart-color).
   ========================================================================== */
.sdb-chart--bars {
  display: flex;
  align-items: flex-end;
  gap: var(--sdb-space-3, 12px);
  block-size: var(--sdb-chart-height, 180px);
  padding-block-start: var(--sdb-space-3, 12px);
  border-block-end: 1px solid var(--sdb-chart-grid, #eef3f8);
}

.sdb-chart__bar {
  flex: 1 1 0;
  min-inline-size: 8px;
  block-size: var(--sdb-chart-value, 0%);
  border-radius: var(--sdb-radius-sm, 6px) var(--sdb-radius-sm, 6px) 0 0;
  background: var(--sdb-chart-color, var(--sdb-chart-1, #0058b7));
}

.sdb-chart--donut {
  inline-size: var(--sdb-chart-size, 160px);
  block-size: var(--sdb-chart-size, 160px);
  border-radius: 50%;
  background: conic-gradient(
    var(--sdb-chart-color, var(--sdb-chart-1, #0058b7)) calc(var(--sdb-chart-value, 0%) * 1),
    var(--sdb-chart-grid, #eef3f8) 0
  );
  -webkit-mask: radial-gradient(circle, transparent 54%, #000 55%);
  mask: radial-gradient(circle, transparent 54%, #000 55%);
}

.sdb-chart__legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sdb-space-3, 12px);
  margin-block-start: var(--sdb-space-3, 12px);
}

.sdb-chart__legend-item {
  display: inline-flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  font-size: 0.8rem;
  color: var(--sdb-chart-label, #8e9aa7);
}

.sdb-chart__swatch {
  inline-size: 12px;
  block-size: 12px;
  border-radius: 3px;
  background: var(--sdb-chart-color, var(--sdb-chart-1, #0058b7));
  flex: 0 0 auto;
}

/* Shell -------------------------------------------------------------------- */
.sdb-app {
  display: grid;
  grid-template-columns: var(--sdb-app-sidebar-width) minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas:
    "sidebar topbar"
    "sidebar content";
  min-block-size: 100vh;
  background: var(--sdb-app-surface-muted);
  color: var(--sdb-color-text, #6b7785);
}

.sdb-app--collapsed {
  grid-template-columns: var(--sdb-app-sidebar-width-collapsed) minmax(0, 1fr);
}

/* Sidebar ------------------------------------------------------------------ */
.sdb-app__sidebar {
  grid-area: sidebar;
  position: sticky;
  inset-block-start: 0;
  align-self: start;
  block-size: 100vh;
  inline-size: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--sdb-app-gap);
  padding: var(--sdb-space-4, 16px);
  background: var(--sdb-app-sidebar-bg);
  border-inline-end: 1px solid var(--sdb-app-border);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.sdb-app__brand {
  display: flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  min-block-size: var(--sdb-app-topbar-height);
  font-family: var(--sdb-font-heading, inherit);
  font-weight: var(--sdb-font-weight-bold, 700);
  color: var(--sdb-color-title, #364048);
}

.sdb-app__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sdb-app__nav-link {
  display: flex;
  align-items: center;
  gap: var(--sdb-space-3, 12px);
  min-block-size: 40px;
  padding: var(--sdb-space-2, 8px) var(--sdb-space-3, 12px);
  border-radius: var(--sdb-radius-md, 10px);
  color: var(--sdb-color-text, #6b7785);
  font-weight: var(--sdb-font-weight-medium, 500);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.sdb-app__nav-link:hover {
  background: var(--sdb-state-hover-bg, rgba(0, 88, 183, 0.06));
  color: var(--sdb-color-title, #364048);
}

.sdb-app__nav-link[aria-current],
.sdb-app__nav-link.is-active {
  background: var(--sdb-state-selected-bg, rgba(0, 88, 183, 0.1));
  color: var(--sdb-color-primary, #0058b7);
}

.sdb-app__nav-link:focus-visible {
  outline: none;
  box-shadow: var(--sdb-focus-ring, 0 0 0 3px rgba(0, 88, 183, 0.22));
}

/* Collapsed sidebar shows the icon rail; labels are visually hidden. */
.sdb-app--collapsed .sdb-app__nav-link > .sdb-app__nav-label,
.sdb-app--collapsed .sdb-app__brand-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sdb-app--collapsed .sdb-app__nav-link {
  justify-content: center;
}

/* Topbar ------------------------------------------------------------------- */
.sdb-app__topbar {
  grid-area: topbar;
  position: sticky;
  inset-block-start: 0;
  z-index: var(--sdb-app-shell-z);
  display: flex;
  align-items: center;
  gap: var(--sdb-app-gap);
  min-block-size: var(--sdb-app-topbar-height);
  padding-inline: var(--sdb-app-content-padding);
  background: var(--sdb-app-topbar-bg);
  border-block-end: 1px solid var(--sdb-app-border);
}

.sdb-app__topbar-title {
  margin: 0;
  font-family: var(--sdb-font-heading, inherit);
  font-size: var(--sdb-text-h5, 20px);
  font-weight: var(--sdb-font-weight-semibold, 600);
  color: var(--sdb-color-title, #364048);
}

.sdb-app__topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--sdb-space-2, 8px);
  margin-inline-start: auto;
}

/* Content ------------------------------------------------------------------ */
.sdb-app__content {
  grid-area: content;
  min-inline-size: 0;
  padding: var(--sdb-app-content-padding);
  overflow-y: auto;
}

.sdb-app__content-inner {
  inline-size: 100%;
  max-inline-size: var(--sdb-app-content-max-width);
  margin-inline: auto;
}

/* Responsive: below the medium breakpoint the shell stacks and the sidebar
   folds to the top as a horizontal rail (off-canvas behaviour is a plugin/JS
   concern and is intentionally not implemented in CSS-only mode). */
@media (max-width: 768px) {
  .sdb-app,
  .sdb-app--collapsed {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "topbar"
      "sidebar"
      "content";
  }

  .sdb-app__sidebar {
    position: static;
    block-size: auto;
    inline-size: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    border-inline-end: 0;
    border-block-end: 1px solid var(--sdb-app-border);
    overflow-x: auto;
  }

  .sdb-app__nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sdb-app__nav-link {
    transition: none;
  }
}

/* ==========================================================================
   Behavior layer — structural support
   Elementos criados/geridos pela camada JS (sdb-design-system-behavior.js).
   O visual completo dos componentes (toast, datepicker, combobox) vive nos
   respetivos blocos; aqui ficam apenas os contentores estruturais.
   ========================================================================== */

/* Backdrop partilhado por sdb-modal / sdb-side-panel quando abertos via JS. */
.sdb-overlay-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--sdb-modal-z-index, 1000);
  background: rgba(31, 42, 54, 0.48);
  animation: sdb-overlay-fade 160ms ease;
}

.sdb-overlay-backdrop[data-sdb-reduce="1"] {
  animation: none;
}

@keyframes sdb-overlay-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Região de toasts (role="region"), criada automaticamente pela fila de toasts. */
.sdb-toast-region {
  position: fixed;
  inset-block-end: var(--sdb-space-4, 16px);
  inset-inline-end: var(--sdb-space-4, 16px);
  z-index: var(--sdb-toast-z-index, 1100);
  display: flex;
  flex-direction: column;
  gap: var(--sdb-space-2, 8px);
  max-inline-size: min(92vw, 360px);
  pointer-events: none;
}

.sdb-toast-region > .sdb-toast {
  pointer-events: auto;
}

/* Quando abertos via JS, os layers ficam acima do backdrop. */
.sdb-modal.is-open,
.sdb-side-panel.is-open {
  z-index: calc(var(--sdb-modal-z-index, 1000) + 1);
}