/* tsuki: page layout — header, main, footer composition */

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.site-header,
main,
.site-footer { padding-inline: var(--tsuki-space-6); }

.site-header {
  display: flex;
  align-items: center;
  gap: var(--tsuki-space-4);
  flex-wrap: wrap;
  max-width: var(--tsuki-wide-width);
  margin-inline: auto;
  width: 100%;
  padding-block: var(--tsuki-space-6);
  border-bottom: 1px solid var(--tsuki-border);
}

.site-title {
  font-weight: 650;
  font-size: var(--tsuki-fs-lg);
  letter-spacing: -0.01em;
  color: var(--tsuki-fg);
  text-decoration: none;
}
.site-title:hover { text-decoration: none; color: var(--tsuki-accent); }

.site-nav { margin-inline-start: auto; }
.site-nav ul {
  display: flex;
  gap: var(--tsuki-space-4);
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-nav a { color: var(--tsuki-fg-muted); }
.site-nav a:hover { color: var(--tsuki-fg); }
.site-nav a[aria-current="page"] { color: var(--tsuki-fg); font-weight: 550; }

.theme-toggle {
  background: transparent;
  border: 1px solid var(--tsuki-border);
  border-radius: 999px;
  width: 2rem;
  height: 2rem;
  display: inline-grid;
  place-items: center;
  color: var(--tsuki-fg-muted);
  transition: var(--tsuki-transition);
}
.theme-toggle:hover { color: var(--tsuki-fg); border-color: var(--tsuki-fg-muted); }

main {
  max-width: var(--tsuki-content-width);
  margin-inline: auto;
  width: 100%;
  padding-block: var(--tsuki-space-12) var(--tsuki-space-16);
}

body.home main,
body.list main { max-width: var(--tsuki-wide-width); }

.site-footer {
  max-width: var(--tsuki-wide-width);
  margin-inline: auto;
  width: 100%;
  padding-block: var(--tsuki-space-8);
  border-top: 1px solid var(--tsuki-border);
  color: var(--tsuki-fg-muted);
  font-size: var(--tsuki-fs-sm);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--tsuki-space-3);
}
.site-footer p { margin: 0; }

.list-header {
  margin-block-end: var(--tsuki-space-8);
  border-block-end: 1px solid var(--tsuki-border);
  padding-block-end: var(--tsuki-space-6);
}
.list-title {
  font-size: var(--tsuki-fs-2xl);
  margin: 0;
}
.list-description {
  margin: var(--tsuki-space-2) 0 0;
  color: var(--tsuki-fg-muted);
}