/* Layout: container, header, footer, sections */
.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

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

.section--tight {
  padding-block: 2rem;
}

.page-title {
  padding: 2.5rem 1rem 1.5rem;
}

.page-title h1 {
  margin: 0;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header);
  color: var(--color-header-fg);
  min-height: var(--header-h);
  box-shadow: none;
  transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.site-header a {
  color: var(--color-header-fg);
  text-decoration: none;
}

.site-header a:hover {
  text-decoration: underline;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: var(--header-h);
  padding-block: 0.65rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
  text-decoration: none;
}

.logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo__name {
  font-weight: var(--fw-bold);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.logo__tag {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.85;
  max-width: 11rem;
}

.nav-primary {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-primary > ul {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.35rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-primary > ul > li {
  display: flex;
  align-items: center;
}

.nav-primary > ul > li > a,
.nav-item > summary {
  display: flex;
  align-items: center;
  min-height: 2.5rem;
  line-height: 1.4;
  white-space: nowrap;
}

.nav-primary a {
  font-size: 0.95rem;
  white-space: nowrap;
}

.nav-primary a[aria-current="page"] {
  text-decoration: underline;
  text-underline-offset: 0.35em;
}

.nav-item {
  position: relative;
}

.nav-item summary {
  list-style: none;
  cursor: pointer;
  font-size: 0.95rem;
}

.nav-item summary::-webkit-details-marker {
  display: none;
}

.nav-item summary::after {
  content: "▾";
  margin-left: 0.25em;
  font-size: 0.75em;
  opacity: 0.8;
}

.nav-item[open] > .submenu,
.nav-item:focus-within > .submenu {
  display: block;
}

.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 14rem;
  background: #111;
  border: 1px solid #333;
  padding: 0.5rem 0;
  list-style: none;
  margin: 0;
  z-index: 120;
}

.submenu a {
  display: block;
  padding: 0.45rem 1rem;
  font-size: 0.9rem;
}

.submenu a:hover {
  background: #222;
}

.header-contacts {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2rem;
  flex-shrink: 0;
  font-size: 0.85rem;
}

.header-contacts__phones {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.1rem;
}

.header-contacts__icons {
  display: flex;
  gap: 0.65rem;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid #555;
  color: #fff;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 1.15rem;
  height: 2px;
  background: #fff;
  position: relative;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: #fff;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

/* —— Footer —— */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
}

.footer-main {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-block: 2.5rem;
}

.footer-main h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.footer-main ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-main li + li {
  margin-top: 0.4rem;
}

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

.footer-main a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block: 0.85rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-muted);
}

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

@media (max-width: 1024px) {
  .header-contacts__phones {
    display: none;
  }

  .nav-primary > ul {
    gap: 0.5rem 0.85rem;
  }
}

@media (max-width: 1024px) {
  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .nav-primary {
    display: none;
    position: absolute;
    inset: 100% 0 auto 0;
    background: #0a0a0a;
    padding: 1rem;
    max-height: calc(100vh - var(--header-h));
    overflow: auto;
  }

  .site-header.is-nav-open .nav-primary {
    display: block;
  }

  .nav-primary > ul {
    flex-direction: column;
    align-items: flex-start;
  }

  .submenu {
    position: static;
    display: none;
    border: none;
    background: transparent;
    padding-left: 0.75rem;
  }

  .nav-item[open] > .submenu {
    display: block;
  }

  .header-contacts {
    display: none;
  }
}

@media (max-width: 768px) {
  .footer-main {
    grid-template-columns: 1fr;
  }
}