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

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

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

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

.section-divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
  border: none;
}

/* Grid */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .grid-12 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Flex utilities */
.flex {
  display: flex;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

/* Reveal animation base */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 60ms; }
.reveal-delay-2 { transition-delay: 120ms; }
.reveal-delay-3 { transition-delay: 180ms; }
.reveal-delay-4 { transition-delay: 240ms; }
.reveal-delay-5 { transition-delay: 300ms; }