/* Site chrome: header, full-screen menu, footer. */

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.site-header__inner { min-height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 14px; color: var(--color-text); text-decoration: none; }
.brand__mark {
  width: 44px; height: 44px; border: 1px solid var(--color-accent); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-style: italic; font-size: 20px; color: var(--color-accent);
}
.brand__name { font-family: var(--font-display); font-size: 24px; letter-spacing: 0.04em; color: var(--color-text); text-decoration: none; }
.site-header__actions { display: flex; align-items: center; gap: clamp(16px, 3vw, 36px); }
.site-header__book, .menu-toggle, .menu__close {
  display: inline-flex; align-items: center; gap: 12px; min-height: 44px; padding: 0;
  background: none; border: 0; cursor: pointer; text-decoration: none;
  font-size: 11px; font-weight: 600; letter-spacing: 0.28em; text-transform: uppercase;
}
.site-header__book { color: var(--color-accent); }
.menu-toggle, .menu__close { color: var(--color-text); }
.menu-toggle svg, .menu__close svg { color: var(--color-accent); }
@media (max-width: 480px) { .brand__name { font-size: 20px; } .brand__mark { display: none; } }

/* Full-screen menu (native <dialog>) */
.menu {
  width: 100%; max-width: none; height: 100%; max-height: none; margin: 0; padding: 0; border: 0;
  background: var(--color-bg-deep); color: var(--color-text); overflow-y: auto;
}
.menu::backdrop { background: var(--color-bg-deep); }
.menu[open] { animation: menu-in 0.35s ease both; }
@keyframes menu-in { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .menu[open] { animation: none; } }
.menu__bar { min-height: var(--header-h); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--color-line); }
.menu__body { padding-block: 48px 72px; display: flex; flex-wrap: wrap; gap: 64px; }
.menu__list { flex: 2 1 560px; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); column-gap: 40px; }
.menu__item {
  display: flex; align-items: center; gap: 20px; padding: 14px 0;
  border-bottom: 1px solid var(--color-line); color: var(--color-text); text-decoration: none;
}
.menu__item:hover .menu__label, .menu__item[aria-current="page"] .menu__label { color: var(--color-accent); }
.menu__item[aria-current="page"] .menu__label { font-style: italic; }
.menu__thumb { flex: 0 0 60px; height: 60px; }
.menu__num { flex: 0 0 30px; font-size: 12px; letter-spacing: 0.2em; color: var(--color-accent); }
.menu__label { font-family: var(--font-display); font-size: clamp(28px, 3vw, 34px); line-height: 1; transition: color 0.2s; }
.menu__aside { flex: 1 1 280px; display: flex; flex-direction: column; gap: 22px; align-items: flex-start; }
.menu__feature { width: 100%; aspect-ratio: 4 / 5; }
@media (max-width: 720px) { .menu__aside { display: none; } }

/* Footer */
.site-footer { background: var(--color-bg-deep); border-top: 1px solid var(--color-accent); padding-block: 88px 40px; }
.site-footer__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 48px; }
.site-footer__brand, .site-footer__contact { display: flex; flex-direction: column; gap: 14px; }
.site-footer__name { font-family: var(--font-display); font-size: 34px; line-height: 1; }
.site-footer__nav ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 24px; margin-top: 18px; }
.site-footer a { color: var(--color-text-muted); text-decoration: none; font-size: 14px; }
.site-footer a:hover { color: var(--color-accent); }
.site-footer__contact { font-size: 14px; color: var(--color-text-muted); }
.socials { display: flex; gap: 10px; margin-top: 8px; }
.socials a {
  width: 44px; height: 44px; border: 1px solid var(--color-line-strong); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; color: var(--color-accent);
}
.socials a:hover { border-color: var(--color-accent); }
.site-footer__legal {
  margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--color-line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px;
  font-size: 12px; color: var(--color-text-dim);
}