/* Layout: Grid, containers, sections, responsive */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-8);
}

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

/* Sections */
.section {
  padding: var(--sp-20) 0;
}

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

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

.section--dark h2,
.section--dark h3 {
  color: var(--dark-text);
}

.section--dark p {
  color: var(--dark-sub);
}

.section-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--sp-3);
}

.section--dark .section-label {
  color: var(--dark-accent);
}

.section-header {
  max-width: 640px;
  margin-bottom: var(--sp-12);
}

.section-header.centered {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section h2 {
  margin-bottom: var(--sp-4);
}

.section-subtitle {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  max-width: 600px;
}

/* Two-column split */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}

.split--reverse {
  direction: rtl;
}

.split--reverse > * {
  direction: ltr;
}

/* Three-column grid */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

/* Four-column grid */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-6);
}

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

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

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

.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }
.gap-6 { gap: var(--sp-6); }
.gap-8 { gap: var(--sp-8); }

/* Responsive */
@media (max-width: 1024px) {
  .split {
    grid-template-columns: 1fr;
    gap: var(--sp-10);
  }

  .split--reverse {
    direction: ltr;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--sp-5);
  }

  .section {
    padding: var(--sp-16) 0;
  }

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

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

@media (max-width: 480px) {
  .container {
    padding: 0 var(--sp-4);
  }

  .section {
    padding: var(--sp-12) 0;
  }
}