/* ============================================
   FLUXO ENGENHARIA - Layout System
   Grid, containers, breakpoints (mobile-first)
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* --- Section spacing --- */
.section {
  padding: var(--space-3xl) 0;
}

.section--lg {
  padding: var(--space-4xl) 0;
}

.section--bg {
  background-color: var(--color-surface);
}

.section--bg-alt {
  background-color: var(--color-bg-alt);
}

/* --- Grid system --- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

.grid--4 {
  grid-template-columns: 1fr;
}

.grid--2-1 {
  grid-template-columns: 1fr;
}

/* --- Row / Flex --- */
.row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.row--center {
  align-items: center;
  justify-content: center;
}

.row--between {
  justify-content: space-between;
}

/* --- Responsive breakpoints --- */
@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

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

@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}