/* ═══════════════════════════════════════════════════════
   KUPOLLA — Header, Mobile Menu
   kupolla-2.css
════════════════════════════════════════════════════════ */

/* 1. HEADER — градієнт бренду за замовчуванням; прозорий лише на головній
   (там під header — темний повноекранний hero без світлого бару крихт). */
.kp-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding-top: var(--safe-t);
  background: var(--gradient-brand);
  transition: background var(--tr), box-shadow var(--tr);
}
.kp-header.scrolled {
  box-shadow: 0 1px 0 rgba(0,0,0,.4), 0 2px 12px rgba(0,0,0,.15);
}
body.kp-body--home .kp-header {
  background: transparent;
  box-shadow: none;
}
body.kp-body--home .kp-header.scrolled {
  background: var(--gradient-brand);
  box-shadow: 0 1px 0 rgba(0,0,0,.4), 0 2px 12px rgba(0,0,0,.15);
}

.kp-header__inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  height: var(--hh);
}

/* Logo */
.kp-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.kp-logo__img {
  height: 1.75rem;
  width: auto;
  display: block;
  /* лого — чорні лінії на прозорому фоні; header/footer темні → інвертуємо в біле */
  filter: brightness(0) invert(1);
  opacity: 1;
  transition: opacity var(--tr);
}
.kp-logo--inv .kp-logo__img { opacity: .92; }
.kp-logo:hover .kp-logo__img { opacity: .8; }

/* Desktop nav */
.kp-nav {
  display: flex;
  align-items: center;
  gap: .1rem;
  flex: 1;
  justify-content: center;
}
.kp-nav__link {
  padding: .4rem .65rem;
  font-size: .8125rem;
  color: rgba(255,255,255,.92);
  border-radius: var(--r-sm);
  transition: color var(--tr-f), background var(--tr-f);
  min-height: 44px;
  display: flex;
  align-items: center;
  white-space: nowrap;
}
.kp-nav__link:hover {
  color: var(--c-white);
  background: rgba(255,255,255,.14);
}
.kp-nav__link--active {
  color: var(--c-white);
  font-weight: 600;
  background: rgba(255,255,255,.16);
}

/* Header actions */
.kp-header__actions {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-shrink: 0;
}

.kp-header__ctas {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.kp-btn--header-ghost {
  background: transparent;
  color: rgba(255,255,255,.88);
  border-color: rgba(255,255,255,.35);
  padding: .6rem 1.1rem;
  font-size: .8125rem;
}
.kp-btn--header-ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.6);
  color: var(--c-white);
}
/* Primary у хедері: біла кнопка — градієнт бренду зливався з темним фоном хедера.
   Лише longhand (не shorthand `background:`), бо інакше Chromium може обнулити background-color. */
header.kp-header .kp-btn.kp-btn--primary {
  background-color: #ffffff;
  background-image: none;
  color: #202020;
  border-color: #ffffff;
}
header.kp-header .kp-btn.kp-btn--primary:hover {
  background-color: #f4f4f4;
  background-image: none;
  color: #000000;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
}

/* Language switcher */
.kp-lang { position: relative; }
.kp-lang__btn {
  display: flex;
  align-items: center;
  gap: .25rem;
  padding: .35rem .625rem;
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .05em;
  color: rgba(255,255,255,.85);
  border: 1px solid rgba(255,255,255,.28);
  border-radius: var(--r-sm);
  min-height: 44px;
  transition: color var(--tr-f), background var(--tr-f), border-color var(--tr-f);
  -webkit-tap-highlight-color: transparent;
}
.kp-lang__btn:hover {
  color: var(--c-white);
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.5);
}
.kp-lang.open .kp-lang__btn {
  color: var(--c-white);
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.55);
}

.kp-lang__arrow {
  width: 14px; height: 14px;
  transition: transform var(--tr-f);
  opacity: .75;
}
.kp-lang.open .kp-lang__arrow { transform: rotate(180deg); opacity: 1; }

.kp-lang__dropdown {
  position: absolute;
  top: calc(100% + 6px); right: 0;
  background: linear-gradient(168deg, var(--c-green) 0%, var(--c-forest) 100%);
  border: 1px solid rgba(5,31,67,.24);
  border-radius: var(--r-md);
  box-shadow: 0 10px 36px rgba(0,0,0,.38), 0 2px 8px rgba(0,0,0,.18);
  min-width: 168px;
  padding: .375rem;
  opacity: 0; visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--tr), visibility var(--tr), transform var(--tr);
  z-index: 200;
  overflow: hidden;
}
.kp-lang__dropdown::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(5,31,67,.35), transparent);
  pointer-events: none;
}
.kp-lang.open .kp-lang__dropdown {
  opacity: 1; visibility: visible;
  transform: translateY(0);
}
.kp-lang__form { margin: 0; display: block; width: 100%; }
.kp-lang__option {
  display: flex;
  align-items: center;
  width: 100%;
  padding: .4375rem .625rem;
  font-size: .8125rem;
  font-family: inherit;
  text-align: left;
  color: rgba(255,255,255,.72);
  border-radius: calc(var(--r-sm) - 2px);
  min-height: 36px;
  transition: color var(--tr-f), background var(--tr-f);
  gap: .375rem;
  -webkit-tap-highlight-color: transparent;
}
.kp-lang__option:hover {
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.95);
}
.kp-lang__option.active {
  background: rgba(255,255,255,.12);
  color: var(--c-white);
  font-weight: 500;
  box-shadow: inset 2px 0 0 var(--c-white);
}

/* Burger */
.kp-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  min-width: 44px; min-height: 44px;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.kp-burger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--c-white);
  border-radius: 2px;
  transition: all var(--tr);
  transform-origin: center;
}
.kp-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.kp-burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.kp-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* 2. MOBILE MENU */
.kp-mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100dvh;
  background: #00311e;
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding-top: calc(var(--hh) + var(--safe-t) + 1rem);
  padding-bottom: calc(2rem + var(--safe-b));
  padding-left:  calc(1.75rem + var(--safe-l));
  padding-right: calc(1.75rem + var(--safe-r));
  clip-path: inset(0 100% 0 0);
  transform: none;
  visibility: hidden;
  pointer-events: none;
  transition: clip-path var(--tr-s) cubic-bezier(.4,0,.2,1), visibility 0s linear var(--tr-s);
  overflow-y: auto;
  overflow-x: clip;
  -webkit-overflow-scrolling: touch;
}
.kp-mobile-menu.open {
  clip-path: inset(0 0 0 0);
  visibility: visible;
  pointer-events: auto;
  transition: clip-path var(--tr-s) cubic-bezier(.4,0,.2,1), visibility 0s;
}

.kp-mobile-menu__nav {
  display: flex;
  flex-direction: column;
  flex: 1;
}
.kp-mobile-menu__link {
  font-family: var(--f-serif); text-transform: uppercase; letter-spacing: .01em;
  font-size: 1.875rem;
  font-weight: 300;
  color: rgba(255,255,255,.8);
  padding: .875rem 0;
  border-bottom: 1px solid rgba(255,255,255,.07);
  transition: color var(--tr-f);
  min-height: 62px;
  display: flex;
  align-items: center;
}
.kp-mobile-menu__link:hover { color: var(--c-white); }
.kp-mobile-menu__link--active { color: var(--c-white); font-weight: 400; }

.kp-mobile-menu__bottom {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.08);
}

.kp-mobile-menu__langs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.kp-mlang {
  padding: .35rem .75rem;
  font-size: .8125rem;
  font-family: inherit;
  font-weight: 500;
  color: rgba(255,255,255,.5);
  background: rgba(255,255,255,.05);
  border-radius: var(--r-full);
  min-height: 36px;
  display: flex;
  align-items: center;
  transition: all var(--tr-f);
}
.kp-mlang.active, .kp-mlang:hover {
  background: rgba(255,255,255,.15);
  color: var(--c-white);
}