/* ─── Container ─── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

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

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

.section--lg {
  padding-block: var(--space-2xl);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-xl);
  }

  .section {
    padding-block: var(--space-2xl);
  }

  .section--lg {
    padding-block: var(--space-3xl);
  }
}

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

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

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

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

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

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .grid {
    gap: var(--space-lg);
  }
}

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

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

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

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

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

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

.flex--wrap {
  flex-wrap: wrap;
}

.flex--gap-sm {
  gap: var(--space-sm);
}

.flex--gap-md {
  gap: var(--space-md);
}

/* ─── Text alignment ─── */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

/* ─── Section themes ─── */
.section--dark {
  background-color: var(--color-surface-dark);
  color: var(--color-text-on-dark);
}

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

.section--primary {
  background-color: var(--color-primary);
  color: var(--color-text-on-primary);
}

/* ─── Visibility ─── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hidden-mobile {
  display: none;
}

@media (min-width: 768px) {
  .hidden-mobile {
    display: initial;
  }

  .hidden-desktop {
    display: none;
  }
}