/*
 * VK Design System · layout
 * Site chrome shared by every public page: header, main navigation, mobile menu, footer,
 * the team CI and the error page.
 */

/* Header */
.vk-header {
  position: relative;
  z-index: 50;
  border-bottom: 1px solid var(--vk-gray-20);
  background: #fff;
}
.vk-utility { border-bottom: 1px solid var(--vk-gray-10); background: var(--vk-gray-5); }
.vk-utility > div {
  display: flex;
  width: var(--vk-container);
  min-height: 36px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  color: var(--vk-gray-70);
  font-size: 13px;
}
.vk-utility nav { display: flex; align-items: center; }
.vk-utility nav a { padding: 4px 12px; text-decoration: none; }
.vk-utility nav a + a { border-left: 1px solid var(--vk-gray-20); }
.vk-brand-row {
  display: flex;
  width: var(--vk-container);
  min-height: 88px;
  margin: 0 auto;
  align-items: center;
  gap: 24px;
}
.vk-brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; }
.vk-brand-mark {
  position: relative;
  display: block;
  width: 48px;
  height: 48px;
  overflow: hidden;
  border: 1px solid var(--vk-gray-20);
  border-radius: 50%;
  background: linear-gradient(90deg, #cd2e3a 0 50%, #0f64b1 50%);
  box-shadow: var(--vk-shadow-sm);
  transform: rotate(25deg);
}
.vk-brand-mark::before, .vk-brand-mark::after {
  content: '';
  position: absolute;
  z-index: 1;
  left: 25%;
  width: 50%;
  height: 50%;
  border-radius: 50%;
}
.vk-brand-mark::before { top: 0; background: #0f64b1; }
.vk-brand-mark::after { bottom: 0; background: #cd2e3a; }
.vk-brand > span:last-child { display: flex; flex-direction: column; }
.vk-brand b { font-size: 20px; line-height: 1.3; letter-spacing: -.02em; }
.vk-brand small { margin-top: 3px; color: var(--vk-gray-50); font-size: 11px; letter-spacing: .04em; }

/* Main navigation (desktop) */
.vk-main-nav { border-top: 1px solid var(--vk-gray-10); }
.vk-main-nav > div { display: flex; width: var(--vk-container); margin: 0 auto; gap: 12px; }
.vk-nav-group { position: relative; }
.vk-nav-group > summary, .vk-main-nav .vk-nav-direct {
  display: flex;
  min-height: 58px;
  align-items: center;
  border-bottom: 3px solid transparent;
  padding: 0 18px;
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}
.vk-nav-group > summary { gap: 10px; cursor: pointer; list-style: none; }
.vk-main-nav .vk-nav-direct { text-decoration: none; }
.vk-nav-group > summary::-webkit-details-marker { display: none; }
.vk-nav-group > summary::after {
  width: 7px;
  height: 7px;
  border: solid currentColor;
  border-width: 0 2px 2px 0;
  content: "";
  transform: translateY(-2px) rotate(45deg);
}
.vk-nav-group[open] > summary::after { transform: translateY(2px) rotate(225deg); }
.vk-nav-group > summary:hover, .vk-nav-group > summary:focus-visible,
.vk-nav-group[open] > summary, .vk-nav-group.is-active > summary,
.vk-main-nav .vk-nav-direct:hover, .vk-main-nav .vk-nav-direct:focus-visible,
.vk-main-nav .vk-nav-direct.active, .vk-main-nav .vk-nav-direct[aria-current="page"] {
  border-bottom-color: var(--vk-primary-50);
  color: var(--vk-primary-60);
}
.vk-nav-group > summary:focus-visible, .vk-main-nav .vk-nav-direct:focus-visible { outline-offset: -3px; }
.vk-nav-submenu {
  position: absolute;
  z-index: 50;
  top: 100%;
  left: 0;
  display: grid;
  min-width: 300px;
  border: 1px solid var(--vk-gray-20);
  border-radius: var(--vk-radius-md);
  padding: 8px;
  background: #fff;
  box-shadow: 0 14px 36px rgba(30, 40, 50, .16);
}
.vk-nav-group:last-child .vk-nav-submenu { right: 0; left: auto; }
.vk-nav-submenu a {
  display: flex;
  min-height: 46px;
  align-items: center;
  border-radius: calc(var(--vk-radius-md) - 4px);
  padding: 0 14px;
  color: var(--vk-gray-90);
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
}
.vk-nav-submenu a:hover, .vk-nav-submenu a:focus-visible,
.vk-nav-submenu a.active, .vk-nav-submenu a[aria-current="page"] {
  background: var(--vk-primary-5);
  color: var(--vk-primary-60);
}

/* Mobile menu */
.vk-mobile-menu { display: none; margin-left: auto; }
.vk-mobile-menu summary { list-style: none; cursor: pointer; font-size: 15px; font-weight: 700; }
.vk-mobile-menu summary::-webkit-details-marker { display: none; }
.vk-mobile-menu summary span { margin-left: 8px; font-size: 20px; }
.vk-mobile-menu nav {
  position: absolute;
  inset: 100% 0 auto;
  display: grid;
  border-block: 1px solid var(--vk-gray-20);
  background: #fff;
  box-shadow: 0 10px 24px rgba(30, 40, 50, .12);
}
.vk-mobile-nav-group { border-bottom: 1px solid var(--vk-gray-10); }
.vk-mobile-nav-group > summary {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  cursor: pointer;
  list-style: none;
  font-weight: 800;
}
.vk-mobile-nav-group > summary::-webkit-details-marker { display: none; }
.vk-mobile-nav-group > summary::after { content: "+"; color: var(--vk-primary-60); font-size: 20px; font-weight: 500; }
.vk-mobile-nav-group[open] > summary::after { content: "−"; }
.vk-mobile-nav-group > summary.active { color: var(--vk-primary-60); }
.vk-mobile-submenu { display: grid; padding: 0 16px 10px; background: var(--vk-gray-5); }
.vk-mobile-menu nav a { padding: 13px 16px; border-bottom: 1px solid var(--vk-gray-10); text-decoration: none; font-weight: 700; }
.vk-mobile-menu nav a:last-child { border-bottom: 0; }
.vk-mobile-menu nav a[aria-current="page"] { background: var(--vk-primary-5); color: var(--vk-primary-60); }
.vk-mobile-menu nav > .vk-mobile-direct { padding: 16px 24px; }

/* The team CI (emblem + wordmark). The text takes the colour of whatever it sits on, so the same
   markup reads on a white sidebar and on a dark panel; the tagline is that colour, dimmed. */
.ci-logo { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 14px; color: inherit; text-decoration: none; }
.ci-logo-mark { display: block; flex: none; width: 48px; height: 48px; overflow: hidden; border: 1px solid var(--vk-gray-20); border-radius: 50%; box-shadow: var(--vk-shadow-sm); transform: rotate(25deg); }
.ci-logo-mark svg { display: block; width: 100%; height: 100%; }
.ci-logo-text { display: flex; min-width: 0; flex-direction: column; }
.ci-logo-name { color: currentColor; font-size: 20px; font-weight: 700; line-height: 1.3; letter-spacing: -.02em; white-space: nowrap; }
.ci-logo-sub { margin-top: 3px; color: currentColor; font-size: 11px; font-weight: 400; line-height: 1.6; letter-spacing: .04em; opacity: .68; white-space: nowrap; }
/* Narrow side panels: the full-size CI is 245px wide. */
.sidebar .ci-logo, .dc-side .ci-logo { gap: 10px; }
.sidebar .ci-logo-mark, .dc-side .ci-logo-mark { width: 38px; height: 38px; }
.sidebar .ci-logo-name, .dc-side .ci-logo-name { font-size: 17px; }
.sidebar .ci-logo-sub, .dc-side .ci-logo-sub { margin-top: 1px; font-size: 10px; letter-spacing: 0; }

/* Error page (403 / 404) */
.vk-error { width: min(calc(100% - 48px), 720px); margin: 0 auto; padding: 96px 0 120px; text-align: center; }
.vk-error-code { margin: 0; color: var(--vk-primary-50); font-size: clamp(72px, 16vw, 128px); font-weight: 700; line-height: 1; letter-spacing: -.04em; }
.vk-error h1 { margin: 24px 0 12px; font-size: clamp(26px, 4vw, 34px); line-height: 1.3; letter-spacing: -.03em; }
.vk-error > p:not(.vk-error-code) { max-width: 560px; margin: 0 auto; color: var(--vk-gray-70); font-size: 17px; line-height: 1.7; }
.vk-error-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 40px; }

/* Footer */
.vk-footer { border-top: 1px solid var(--vk-gray-20); background: var(--vk-gray-90); color: #fff; }
.vk-footer > div { display: flex; width: var(--vk-container); min-height: 120px; margin: 0 auto; align-items: center; justify-content: space-between; gap: 16px; color: rgba(255,255,255,.75); font-size: 13px; }
.vk-footer p { margin: 0; }

@media (max-width: 1024px) {
  .vk-main-nav { display: none; }
  .vk-mobile-menu { display: block; }
}

@media (max-width: 767px) {
  .vk-utility > div, .vk-brand-row { width: var(--vk-container-mobile); }
  .vk-error { width: var(--vk-container-mobile); padding: 64px 0 80px; }
  .vk-utility > div > span { display: none; }
  .vk-utility > div { justify-content: flex-end; }
  .vk-brand-row { min-height: 72px; }
  .vk-brand-mark { width: 40px; height: 40px; }
  .vk-brand b { font-size: 17px; }
  .vk-brand small { display: none; }
  .ci-logo-mark { width: 40px; height: 40px; }
  .ci-logo-name { font-size: 17px; }
  .vk-footer > div { width: var(--vk-container-mobile); flex-direction: column; align-items: flex-start; justify-content: center; }
}