/* ---------- Logo ---------- */

/* Цвета эмблемы (#logo-emblem в спрайте) и надписи; на тёмном фоне переопределяются (footer.css) */
.logo {
  --logo-house: var(--c-logo-green);
  --logo-gold: var(--c-logo-gold);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* Пропорции эмблемы 746:534 */
.logo__mark {
  width: 56px;
  height: 40px;
  flex: none;
}

.logo__word {
  display: inline-flex;
  gap: 0.25em;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--logo-house);
}

.logo__word span {
  color: var(--logo-gold);
}

/* ---------- Header ---------- */

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  transition:
    background-color 0.5s,
    box-shadow 0.5s;
}

.header.is-scrolled {
  background: rgb(246 243 236 / 0.86);
  backdrop-filter: saturate(1.4) blur(18px);
  -webkit-backdrop-filter: saturate(1.4) blur(18px);
  box-shadow: 0 1px 0 var(--c-line);
}

/* backdrop-filter сделал бы шапку контейнером для fixed-меню — при открытом меню отключаем */
.header.is-open {
  background: var(--c-bg);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: 0 1px 0 var(--c-line);
}

.header__bar {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header__logo {
  flex: none;
}

.header__nav {
  display: none;
  gap: 4px;
  padding: 5px;
  border-radius: 999px;
  background: rgb(255 255 255 / 0.55);
  box-shadow: inset 0 0 0 1px var(--c-line);
}

.header__nav a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: var(--fs-ui);
  font-weight: 600;
  color: var(--c-ink-2);
  transition:
    background-color var(--dur-ui),
    color var(--dur-ui);
}

.header__nav a:hover,
.header__nav a.is-active {
  background: var(--c-surface);
  color: var(--c-ink);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header__wa {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: var(--c-forest);
  box-shadow: inset 0 0 0 1px var(--c-line-strong);
  transition:
    background-color var(--dur-ui),
    color var(--dur-ui),
    box-shadow var(--dur-ui);
}

.header__wa:hover {
  background: var(--c-wa);
  color: var(--c-wa-ink);
  box-shadow: none;
}

.header__cta {
  display: none;
}

.header__burger {
  position: relative;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: var(--c-forest);
}

.header__burger span {
  position: absolute;
  left: 13px;
  right: 13px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--c-on-dark);
  transition:
    transform 0.5s var(--ease),
    top 0.5s var(--ease);
}

.header__burger span:first-child {
  top: 18px;
}

.header__burger span:last-child {
  top: 25px;
}

.is-open .header__burger span:first-child {
  top: 21.5px;
  transform: rotate(45deg);
}

.is-open .header__burger span:last-child {
  top: 21.5px;
  transform: rotate(-45deg);
}

/* ---------- Mobile menu ---------- */

.menu {
  position: fixed;
  inset: var(--header-h) 0 0;
  overflow-y: auto;
  background: var(--c-bg);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.5s var(--ease),
    visibility 0.5s;
}

.is-open .menu {
  opacity: 1;
  visibility: visible;
}

.menu__inner {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 40px;
  padding-block: 16px 32px;
}

.menu__links {
  margin: 0;
}

.menu__links li {
  border-bottom: 1px solid var(--c-line);
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.8s var(--ease);
  transition-delay: calc(var(--i) * 50ms);
}

.is-open .menu__links li {
  opacity: 1;
  transform: none;
}

.menu__links a {
  display: block;
  padding: 16px 0;
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.1;
}

.menu__actions {
  display: grid;
  gap: 12px;
}

@media (min-width: 640px) {
  .header__cta {
    display: inline-flex;
  }
}

@media (min-width: 1080px) {
  .header__nav {
    display: flex;
  }

  .header__burger,
  .menu {
    display: none;
  }
}