/**
 * 152scan public shell (4A + 4B.1 calibration).
 * Uses --color-* tokens only (home inline :root may still redefine legacy --bg/--blue).
 * Cascade: tokens.css → site.css (legacy) → shell.css → home.css → page inline.
 */

/* —— Accessibility —— */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: var(--space-4);
  z-index: var(--z-skip);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: var(--color-accent-contrast);
  border-radius: var(--radius-sm);
  font: 600 var(--text-sm)/var(--line-tight) var(--font-ui);
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform var(--transition-fast);
}
.skip-link:focus {
  transform: translateY(0);
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.public-shell :focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .public-shell *,
  .public-shell *::before,
  .public-shell *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

html {
  overflow-x: clip;
}

body.public-shell {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--color-ink);
  background: var(--color-canvas);
  overflow-x: clip;
}

/* —— Layout primitives (foundation for 4B+) —— */
.site-container {
  width: min(100% - 32px, var(--container-max));
  margin-inline: auto;
}
.site-section {
  padding-block: var(--space-9);
}
.site-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.site-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
}
.site-rule {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-5) 0;
}
.site-kicker {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.site-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.site-link:hover { color: var(--color-accent-hover); }

/* —— Header —— */
.site-header {
  font-family: var(--font-ui);
  color: var(--color-ink);
  background: var(--color-panel);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
}

.site-header .sh-container {
  width: min(100% - 32px, var(--container-max));
  margin-inline: auto;
}

.site-header .header {
  background: transparent;
  border: 0;
  position: static;
}

.site-header .nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: -0.03em;
  line-height: var(--line-tight);
}
.site-header .brand:hover { color: var(--color-ink); }

.site-header .brand-logo {
  display: block;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border-radius: 7px;
}

.site-header .brand-glyph {
  display: none;
}

.site-header .brand-title {
  font-weight: 700;
  letter-spacing: -0.03em;
}
.site-header .brand-title small { display: none; }

.site-header .menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: 0.9375rem;
  color: var(--color-ink-muted);
}
.site-header .menu a {
  color: inherit;
  text-decoration: none;
  padding-block: var(--space-2);
  font-weight: 500;
}
.site-header .menu a:hover { color: var(--color-ink); }

.site-header a.btn-shell,
.site-header .btn-shell {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: #ffffff;
  font: 600 0.9375rem/1 var(--font-ui);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}
.site-header a.btn-shell:hover,
.site-header .btn-shell:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
}

.site-header .sh-contacts {
  display: none;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  min-width: 0;
  line-height: 1.25;
}
.site-header .sh-contact {
  color: var(--color-ink-muted);
  text-decoration: none;
  font-size: 0.8125rem;
  font-weight: 500;
  white-space: nowrap;
}
.site-header .sh-contact:hover { color: var(--color-accent); }
.site-header .sh-contact--email {
  font-size: 0.75rem;
  max-width: 11rem;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media (min-width: 1100px) {
  .site-header .sh-contacts { display: flex; }
}

.site-header .burger {
  display: none;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  place-items: center;
}
.site-header .burger:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.site-header .mobile-menu {
  display: none;
  padding: 0 0 var(--space-4);
  border-top: 1px solid var(--color-border);
}
.site-header .mobile-menu.is-open { display: block; }
.site-header .mobile-menu a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-3) 0;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  font-size: var(--text-base);
}
.site-header .mobile-menu a:hover { color: var(--color-accent); }

body.nav-open {
  overflow: hidden;
}

@media (max-width: 960px) {
  .site-header .menu { display: none; }
  .site-header .nav > .btn-shell { display: none; }
  .site-header .burger { display: inline-grid; }
}

@media (max-width: 480px) {
  .site-header .sh-container { width: min(100% - 24px, var(--container-max)); }
  .site-header .nav { min-height: 60px; }
  .site-header .brand { font-size: 1.25rem; }
}

@media (max-width: 360px) {
  .site-footer .site-container,
  .site-footer .container { width: min(100% - 20px, var(--container-max)); }
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0 var(--space-8);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  background: var(--color-panel);
}
.site-footer .site-container,
.site-footer .container {
  width: min(100% - 32px, var(--container-max));
  margin-inline: auto;
}
.site-footer-grid {
  display: grid;
  gap: var(--space-5);
}
@media (min-width: 768px) {
  .site-footer-grid { grid-template-columns: 1.1fr 1.6fr auto; align-items: start; }
}
.site-footer strong {
  color: var(--color-ink);
  font-size: var(--text-base);
  letter-spacing: -0.02em;
}
.site-footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.site-footer-brand img {
  display: block;
  border-radius: 5px;
}
.site-footer-requisites {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
}
.site-footer-requisites a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 600;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.site-footer-requisites a:hover { color: var(--color-accent); }
.site-footer-address {
  font-size: var(--text-xs);
  line-height: 1.4;
  max-width: 28rem;
}
.site-footer .legal-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.site-footer .legal-links a {
  color: var(--color-ink-muted);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.site-footer .legal-links a:hover { color: var(--color-accent); }

.site-footer-meta {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}
.site-footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin-top: var(--space-3);
}
.site-footer-nav a {
  color: var(--color-ink-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.site-footer-nav a:hover { color: var(--color-accent); }