/* Site header + layout shell. */

site-header {
  display: block;

  & .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: color-mix(in srgb, var(--color-bg) 85%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
  }

  & .site-header__inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: var(--space-sm) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  & .site-header__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
  }

  & .site-header__logo-img { height: 32px; }

  & .site-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
  }

  & .site-header__link {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    text-decoration: none;

    &:hover { color: var(--color-text); }
  }

  & .site-header__link--active {
    color: var(--color-text);
    font-weight: 600;
  }

  & .site-header__mobile {
    display: none;
    align-items: center;
    gap: var(--space-sm);
  }

  & .site-header__burger {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);

    & span {
      display: block;
      width: 20px;
      height: 2px;
      background: var(--color-text);
    }
  }
}

/* Layout shell */

.app-router {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-main {
  flex: 1;
  padding-top: 52px;
}