/* announcement banner */
.banner {
  background: var(--grad-band);
  color: var(--carbon);
  font-size: 13px;
  letter-spacing: 0.01em;
  text-align: center;
  padding: 10px 44px 10px 24px;
  position: relative;
}
.banner a,
.banner [data-open-city-modal] {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.banner-close {
  position: absolute;
  right: 14px; top: 50%;
  transform: translateY(-50%);
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%; color: var(--carbon); opacity: 0.8;
}
.banner-close:hover { opacity: 1; background: rgba(255,255,255,0.14); }
.banner[hidden] { display: none; }

/* nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease);
}
.site-header.is-stuck {
  background: rgba(4,4,7,0.86);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--charcoal);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 76px;
}

.main-nav { display: none; }
.main-nav-list { display: flex; align-items: center; gap: 30px; }
.main-nav-list a {
  position: relative;
  font-size: 14px;
  color: var(--carbon);
  padding: 6px 0;
  transition: color 0.2s var(--ease);
}
.main-nav-list a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px; background: var(--iris);
  transition: width 0.25s var(--ease);
}
.main-nav-list a:hover { color: var(--iris); }
.main-nav-list a:hover::after { width: 100%; }

.site-header-actions { display: flex; align-items: center; gap: 18px; min-width: 0; }

.header-phone { display: none; flex-direction: column; align-items: flex-end; line-height: 1.2; }
.header-phone-number { font-size: 15px; font-weight: 500; color: var(--carbon); transition: color 0.2s var(--ease); }
.header-phone-number:hover { color: var(--iris); }
.header-phone-label {
  font-family: var(--mono);
  font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--smoke);
  margin-top: 2px;
}

/* burger */
.burger {
  display: flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; flex-shrink: 0;
  border: 1px solid var(--charcoal); border-radius: var(--r-pill);
}
.burger span { display: block; width: 18px; height: 1.5px; margin: 0 auto; background: var(--carbon);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease); }
.burger.is-active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.is-active span:nth-child(2) { opacity: 0; }
.burger.is-active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 899px) {
  .site-header-inner { height: 66px; gap: 12px; }
  .site-header-actions { gap: 12px; }
  .site-header .btn-city { max-width: 168px; padding: 11px 16px; font-size: 13px; }
}

/* mobile menu */
.mobile-menu { background: var(--void); border-top: 1px solid var(--charcoal); padding: 22px var(--pad) 30px; }
.mobile-menu[hidden] { display: none; }
.mobile-menu-list { display: flex; flex-direction: column; margin-bottom: 22px; }
.mobile-menu-list a { display: inline-block; padding: 15px 4px; font-size: 15px; color: var(--carbon); border-bottom: 1px solid var(--charcoal); }
.mobile-menu-list a:hover { color: var(--iris); }
.mobile-menu-actions { display: flex; flex-direction: column; gap: 14px; }
.mobile-menu-actions .btn-city { width: 100%; justify-content: center; max-width: none; }
.mobile-menu-phone-group { text-align: center; }
.mobile-menu-phone { display: inline-block; font-size: 17px; font-weight: 500; color: var(--carbon); }
.mobile-menu-phone-label {
  display: block;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--smoke);
}