/* ==========================================================================
   brettdavis.ai - Layout
   Container, site header, footer, and section rhythm.
   ========================================================================== */

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

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

.section--hairline {
  border-top: 1px solid var(--color-hairline);
}

/* ---- Site header ---------------------------------------------------------
   A quiet, sticky bar. The wordmark carries the only permanent accent
   on the page: a single green full stop.                                  */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-hairline);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.wordmark .dot { color: var(--color-accent); }

/* Primary nav - desktop */
.site-nav ul {
  display: flex;
  gap: var(--space-4);
  list-style: none;
}

.site-nav a {
  text-decoration: none;
  font-size: var(--text-small);
  color: var(--color-secondary);
  transition: color var(--duration-fast) var(--ease);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--color-ink); }

.site-nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.45em;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: var(--space-1);
  font: inherit;
  font-size: var(--text-small);
  color: var(--color-ink);
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-hairline);
    display: none;
  }
  .site-nav[data-open="true"] { display: block; }

  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: var(--space-2) var(--gutter) var(--space-3);
  }
  .site-nav li { border-top: 1px solid var(--color-hairline); }
  .site-nav a {
    display: block;
    padding: var(--space-2) 0;
    font-size: var(--text-body);
  }
}

/* ---- Footer -------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-hairline);
  padding-block: var(--space-6);
  margin-top: var(--space-section);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: baseline;
  justify-content: space-between;
  font-size: var(--text-small);
  color: var(--color-secondary);
}

.site-footer nav {
  display: flex;
  gap: var(--space-3);
}

.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--color-ink); }