/* layout.css: where things go. Header, sections, grids, footer. */

.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* Header */

.site-header {
  position: sticky; /* stays at the top while you scroll */
  z-index: 1; /* above the tilted notes and people as they scroll under it */
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

/* Sections */

.section {
  padding: var(--space-8) 0;
}

.section-heading {
  max-width: 640px;
  margin: 0 auto var(--space-7);
  text-align: center;
}

/* Hero */

.hero {
  padding-top: var(--space-8);
  text-align: center;
}

.hero .lead {
  max-width: 560px;
  margin-inline: auto;
}

.hero .actions {
  justify-content: center;
}

/* The row of people. flex-end lines up their bottoms, like they share a floor. */
.hero-crowd {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: var(--space-2);
  margin-top: var(--space-7);
  border-bottom: 1px solid var(--border);
}

.hero-crowd .illustration {
  width: 180px;
}

/* Grids */

/* As many 240px+ columns as fit: one on a phone, three on a laptop. */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: var(--space-5);
}

/* Two equal columns, side by side */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-8);
}

/* Footer */

.site-footer {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.site-footer .container,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-5);
}

/* Phones */

@media (max-width: 720px) {
  .section {
    padding: var(--space-7) 0;
  }

  .split {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .nav-link--extra {
    display: none;
  }

  /* Three people instead of five */
  .hero-crowd .illustration {
    width: 30%;
  }

  .hero-crowd .illustration:nth-child(n + 4) {
    display: none;
  }
}