/* Reusable UI pieces — header, labels, CTAs, cards */

/* ——— Sticky header ——— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: color-mix(in srgb, var(--color-bg) 86%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-line);
}

.site-header__inner {
  width: min(100%, 1440px);
  margin-inline: auto;
  height: 100%;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__avatar {
  width: 30px;
  height: 30px;
  border-radius: 100px;
  object-fit: cover;
  flex-shrink: 0;
}

.brand__name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  font-size: 14px;
  font-weight: 500;
  transition: color 0.25s var(--ease-out);
}

.nav a:hover {
  color: var(--color-accent);
}

.nav a.is-accent {
  color: var(--color-accent);
  font-weight: 600;
}

.nav a.is-current {
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  transition: opacity 0.25s var(--ease-out);
}

.header-cta:hover {
  opacity: 0.72;
}

.header-cta .icon-arrow {
  width: 18px;
  height: 18px;
}

.menu-toggle {
  display: none;
  width: 30px;
  height: 30px;
  position: relative;
}

.menu-toggle span,
.menu-toggle span::before,
.menu-toggle span::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-ink);
  position: absolute;
  left: 6px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}

.menu-toggle span {
  top: 14px;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  left: 0;
}

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

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

.menu-toggle[aria-expanded="true"] span {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-nav {
  display: none;
}

@media (max-width: 809px) {
  .nav,
  .header-cta {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .mobile-nav {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: color-mix(in srgb, var(--color-bg) 94%, transparent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-line);
    padding: 20px var(--gutter) 28px;
    flex-direction: column;
    gap: 18px;
    z-index: 49;
  }

  .mobile-nav.is-open {
    display: flex;
  }

  .mobile-nav a {
    font-size: 18px;
    font-weight: 500;
  }

  .mobile-nav a.is-accent,
  .mobile-nav .mobile-cta {
    color: var(--color-accent);
    font-weight: 600;
  }
}

/* ——— Eyebrow / section label ——— */
.eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--color-accent);
}

.eyebrow--on-dark {
  color: var(--color-on-dark-muted);
}

/* ——— Headings ——— */
.display {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--color-ink);
}

.display--xl {
  font-size: 76px;
  line-height: 0.98;
  letter-spacing: -2px;
}

.display--lg {
  font-size: 56px;
  line-height: 1.04;
  letter-spacing: -1.2px;
}

.display--md {
  font-size: 52px;
  line-height: 1.04;
  letter-spacing: -1.2px;
}

.display--sm {
  font-size: 46px;
  line-height: 1.04;
  letter-spacing: -1px;
}

.display--xs {
  font-size: 30px;
  line-height: 1.15;
  letter-spacing: -0.4px;
}

.display--on-dark {
  color: var(--color-on-dark);
}

@media (max-width: 1199px) {
  .display--xl {
    font-size: 58px;
    letter-spacing: -1.5px;
  }

  .display--lg {
    font-size: 46px;
  }

  .display--md {
    font-size: 40px;
  }
}

@media (max-width: 809px) {
  .display--xl {
    font-size: 42px;
    letter-spacing: -1.2px;
  }

  .display--lg {
    font-size: 34px;
    letter-spacing: -0.8px;
  }

  .display--md,
  .display--sm {
    font-size: 34px;
    letter-spacing: -0.8px;
  }

  .display--xs {
    font-size: 26px;
  }
}

/* ——— Body copy ——— */
.lead {
  font-size: 18px;
  line-height: 1.55;
  max-width: 620px;
}

.body {
  font-size: 18px;
  line-height: 1.55;
}

.body--sm {
  font-size: 16px;
  line-height: 1.55;
}

.body--on-dark {
  color: var(--color-on-dark);
}

@media (max-width: 809px) {
  .lead,
  .body {
    font-size: 16px;
  }
}

/* ——— Text + arrow CTA ——— */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.2px;
  color: var(--color-ink);
  transition: opacity 0.25s var(--ease-out);
}

.cta:hover {
  opacity: 0.7;
}

.cta:hover .icon-arrow {
  /* Fill uses ink; stroke/arrow use page bg — never both the same color */
  --icon-fill: var(--color-ink);
  color: var(--color-bg);
}

.cta--on-dark {
  color: var(--color-on-dark);
}

.cta--on-dark:hover .icon-arrow {
  --icon-fill: var(--color-on-dark);
  color: var(--color-forest);
}

.cta .icon-arrow {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: color 0.25s var(--ease-out);
}

.icon-arrow {
  display: inline-block;
  color: currentColor;
  --icon-fill: transparent;
}

.icon-arrow svg {
  width: 100%;
  height: 100%;
  display: block;
}

.icon-arrow svg circle:first-child {
  fill: var(--icon-fill);
  transition: fill 0.25s var(--ease-out);
}

/* ——— Media ——— */
.media {
  border-radius: 2px;
  overflow: hidden;
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* Cluster submenu under header (Подход / Для бизнеса) */
.cluster-subnav {
  width: min(100%, var(--page-max));
  margin-inline: auto;
  padding: 16px var(--gutter);
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.cluster-subnav__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--color-accent);
  text-decoration: none;
}

.cluster-subnav__label.is-current {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

a.cluster-subnav__label:hover {
  opacity: 0.85;
}

.cluster-subnav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  transition: color 0.25s var(--ease-out);
}

.cluster-subnav a:hover {
  color: var(--color-accent);
}

.cluster-subnav a.is-current {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

@media (max-width: 809px) {
  .cluster-subnav {
    padding: 14px var(--gutter);
    gap: 16px 20px;
  }
}

/* ——— Footer ——— */
.site-footer {
  width: min(100%, var(--page-max));
  margin-inline: auto;
  background: var(--color-forest);
  color: var(--color-on-dark-muted);
}

.site-footer__inner {
  padding: 48px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-footer__copy {
  font-size: 12px;
  font-weight: 400;
}

.site-footer__social {
  display: flex;
  align-items: center;
  gap: 14px;
}

.site-footer__social a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.4px;
  color: var(--color-on-dark-muted);
  transition: color 0.25s var(--ease-out);
}

.site-footer__social a:hover {
  color: var(--color-on-dark);
}

.site-footer__social img,
.site-footer__social svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 809px) {
  .site-footer__inner {
    padding: 36px var(--gutter);
  }
}