/* LAYOUT SYSTEM */
*, *::before, *::after {
  box-sizing: border-box;
}

body, h1, h2, h3, h4, p, figure, blockquote, dl, dd {
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

img, picture {
  max-width: 100%;
  display: block;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-mobile);
  padding-right: var(--container-padding-mobile);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--container-padding-desktop);
    padding-right: var(--container-padding-desktop);
  }
}

/* Grids */
.grid {
  display: grid;
  gap: var(--spacing-6);
}

.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); gap: var(--spacing-8); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

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

/* Sections */
.section {
  padding-top: var(--spacing-16);
  padding-bottom: var(--spacing-16);
}

.section-lg {
  padding-top: var(--spacing-24);
  padding-bottom: var(--spacing-24);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--spacing-24);
    padding-bottom: var(--spacing-24);
  }
  .section-lg {
    padding-top: var(--spacing-32);
    padding-bottom: var(--spacing-32);
  }
}

.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-primary { background-color: var(--color-bg-primary); }

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }