/* ==========================================================================
   ISAC — Layout: container, grades, seções e utilitários
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* --- Seções -------------------------------------------------------------- */

.section {
  padding-block: var(--section-y);
}

.section-sm {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section-padding {
  padding-block: var(--section-y);
}

.bg-surface { background-color: var(--color-surface); }
.bg-surface-2 { background-color: var(--color-surface-2); }
.bg-brand { background: var(--gradient-brand); color: var(--color-text-inverse); }

/* Cabeçalho de seção */
.section-head {
  max-width: 680px;
  margin-bottom: var(--space-12);
}

.section-head.is-centered {
  margin-inline: auto;
  text-align: center;
}

.section-head p {
  font-size: var(--text-md);
}

.section-head-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-10);
}

.section-head-row > :first-child { max-width: 640px; }

/* Compatibilidade com páginas internas já existentes */
.section-header-flex {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-8);
}

.section-title {
  font-size: var(--text-xl);
  color: var(--color-primary-dark);
  margin-bottom: var(--space-8);
  text-align: center;
}

.section-title-m0 {
  font-size: var(--text-xl);
  margin: 0;
}

/* --- Grades -------------------------------------------------------------- */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

/* Grade que se adapta sozinha, sem breakpoint */
.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: var(--space-6);
}

.grid-auto-sm {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: var(--space-4);
}

/* --- Utilitários --------------------------------------------------------- */

.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.text-center { text-align: center; }
.text-balance { text-wrap: balance; }

.font-bold { font-weight: var(--weight-bold); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-md { font-size: var(--text-md); }
.font-lg { font-size: var(--text-lg); }
.font-xl { font-size: var(--text-xl); }

.stack { display: flex; flex-direction: column; }
.cluster { display: flex; flex-wrap: wrap; align-items: center; }

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.m-0 { margin: 0; }

/* --- Responsivo ---------------------------------------------------------- */

@media (max-width: 992px) {
  .grid-3,
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }

  .section-head { margin-bottom: var(--space-8); }
}