/*
  Componentes minimos. Cada projeto especializa ou substitui, mas os estados
  (hover, foco, ativo, desabilitado, erro) sao obrigatorios em todos.
*/

/* --- Cabecalho e navegacao --- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-surface);
  border-bottom: var(--border-hairline) solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  text-decoration: none;
}

.site-nav {
  display: none;
  gap: var(--space-5);
}

.site-nav a {
  text-decoration: none;
  color: var(--color-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-foreground);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-width: var(--touch-target);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: var(--border-hairline) solid var(--color-border-strong);
  border-radius: var(--radius-sm);
}

.site-nav--mobile {
  display: none;
  flex-direction: column;
  gap: var(--space-1);
  padding-block: var(--space-3) var(--space-5);
  border-top: var(--border-hairline) solid var(--color-border);
}

.site-nav--mobile[data-open="true"] { display: flex; }

.site-nav--mobile a {
  display: block;
  min-height: var(--touch-target);
  padding-block: var(--space-3);
  text-decoration: none;
}

/*
  62rem, e nao 48rem: em 768 os cinco itens do menu nao cabem ao lado da marca
  e do botao, e "Onde fica" quebrava em duas linhas.
*/
@media (min-width: 62rem) {
  .site-nav { display: flex; }
  .nav-toggle { display: none; }
  .site-nav--mobile { display: none !important; }
}

/* --- Botoes --- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--touch-target);
  padding: var(--space-3) var(--space-5);
  border: var(--border-hairline) solid transparent;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-weight: var(--weight-medium);
  text-decoration: none;
  transition: background var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.button:hover { background: var(--color-primary-strong); }
.button:active { transform: translateY(1px); }

.button[aria-disabled="true"],
.button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.button--secondary {
  background: transparent;
  color: var(--color-foreground);
  border-color: var(--color-border-strong);
}

.button--secondary:hover {
  background: var(--color-surface-raised);
}

/* --- Formulario --- */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field > label {
  font-weight: var(--weight-medium);
}

.field__hint {
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: var(--touch-target);
  padding: var(--space-3);
  background: var(--color-surface);
  color: var(--color-foreground);
  border: var(--border-hairline) solid var(--color-border-strong);
  border-radius: var(--radius-sm);
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
}

/* Erro comunicado por texto e borda, nunca so por cor. */
.field__error {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-error);
}

.field__error::before {
  content: "!";
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.14rem;
  border: var(--border-thick) solid currentColor;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: var(--weight-bold);
  line-height: 1;
}

.field[data-invalid="true"] input,
.field[data-invalid="true"] select,
.field[data-invalid="true"] textarea {
  border-color: var(--color-error);
  border-width: var(--border-thick);
}

/* --- Mensagens de estado --- */

.notice {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border-left: var(--border-thick) solid var(--color-info);
  background: var(--color-surface-raised);
  border-radius: var(--radius-sm);
}

.notice[data-tone="success"] { border-left-color: var(--color-success); }
.notice[data-tone="warning"] { border-left-color: var(--color-warning); }
.notice[data-tone="error"] { border-left-color: var(--color-error); }

/* --- Estado vazio com caminho de recuperacao --- */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-7) var(--space-5);
  border: var(--border-hairline) dashed var(--color-border-strong);
  border-radius: var(--radius-sm);
}

/* --- Rodape --- */

.site-footer {
  padding-block: var(--space-7);
  border-top: var(--border-hairline) solid var(--color-border);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

/*
  Reveal progressivo: o conteudo comeca visivel e so e escondido quando o
  JavaScript assume o controle. Sem JS, ou com motion reduzido, nada some.

  O estado escondido de cada variante fica em brand.css, junto da identidade.
  Aqui mora so a transicao comum.
*/
[data-reveal] {
  transition: opacity var(--duration-reveal) var(--ease-soft),
              transform var(--duration-reveal) var(--ease-soft),
              clip-path var(--duration-scene) var(--ease-soft);
}