/* -------------------------------------------------
   1. Header
   ------------------------------------------------- */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1003;
  backdrop-filter: blur(14px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.header__logo {
  font-weight: 700;
  font-size: 20px;
  color: var(--text-primary);
  text-decoration: none;
}

/* -------------------------------------------------
   2. Desktop navigation
   ------------------------------------------------- */
.header__nav {
  display: flex;
  gap: 30px;
  align-items: center;
}
.header__nav-link,
.header__nav-btn {
  color: var(--text-primary);
  font-weight: 500;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  padding-bottom: 5px;
}
.header__nav-link {
  position: relative;

}
.header__nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.header__nav-link:hover,
.header__nav-link:focus-visible,
.header__nav-dropdown:hover .header__nav-btn {
  color: var(--accent);
}
.header__nav-link:hover::after,
.header__nav-link:focus-visible::after {
  transform: scaleX(1);
}
.header__nav-dropdown {
  position: relative;
  padding: 20px 0;
}
.header__nav-arrow {
  display: inline-block;
  margin: 5px;
  font-size: 12px;
  transition: transform .3s ease;
}
.header__nav-dropdown:hover .header__nav-arrow {
  transform: rotate(180deg);
}

/* -------------------------------------------------
   3. Mega‑menu
   ------------------------------------------------- */
.mega-menu {
  box-sizing: border-box;
  position: fixed;
  top: 50px;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1200px;
  padding: 40px 0;
  opacity: 0;
  visibility: hidden;
  transition: .25s ease;
}
.header__nav-dropdown:hover .mega-menu {
  opacity: 1;
  visibility: visible;
}
.mega-menu__content {
  max-height: calc(80vh - 70px);
  overflow-y: auto;
  background: var(--bg-primary);
  padding: 30px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}
.mega-menu__title {
  margin-bottom: 40px;
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
}
.mega-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

/* ------- Mega‑card (основне посилання) ------- */
.mega-card {
  box-sizing: border-box;
  transition: var(--transition);
}
.mega-card__inner {}

.mega-card-title-container{
  display: flex;
  align-items: center;
  gap: 10px;
}

/* основне посилання всередині карточки */
.mega-card__link {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  color: var(--text-primary);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  text-decoration: none;
  transition: var(--transition);
}
.mega-card__link:hover {
  border-color: var(--accent);
  color: var(--accent);
  opacity: .9;
  transform: scale(1.001);
}
.mega-card__link:hover .mega-card__icon,
.mega-card__link:hover .mega-card__title,
.mega-card__link:hover .mega-card__desc {
  color: var(--accent);
  transform: translateY(-2px);
}

/* іконка/текст всередині посилання */
.mega-card__icon {
  font-size: 32px;
}
.mega-card__icon svg { width: 32px; height: 32px; }
.mega-card__title {
  font-size: 1.1rem;
}
.mega-card__desc {
  margin: 0;
  font-size: .95rem;
  color: var(--text-secondary);
}

/* -------- Sub‑list (під‑меню) -------- */
.mega-card__sublist-container {
  transition: .25s ease;
}
.mega-card__sublist {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 20px 0;
  opacity: 0;
  visibility: hidden;
  transition: .25s ease;
}

/* елемент списку та посилання */
.mega-card__sublist-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mega-card__sublist-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  color: var(--text-primary);
  background: var(--bg-primary);
  border-radius: 10px;
  text-decoration: none;
  transition: var(--transition);
}

/* анімація «>» справа */
.mega-card__sublist-link::after {
  content: "\003E";
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%) translateX(-5px);
  font-size: inherit;
  color: var(--accent);
  opacity: 0;
  transition: opacity .25s ease, transform .25s ease;
}
.mega-card__sublist-link:hover {
  color: var(--accent);
  transform: translateX(5px);
}
.mega-card__sublist-link:hover::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* відкриття під‑списку */
.mega-card--wrapper:hover .mega-card__sublist {
  display: flex;
  opacity: 1;
  visibility: visible;
}
.mega-card--wrapper:hover .mega-card__sublist-container {
  background: var(--card-bg);
  border: 1px solid var(--accent);
  border-radius: 0 0 20px 20px;
  padding: 0 20px 20px;
}
.mega-card--wrapper:hover .mega-card__link {
  border-bottom: none;
  border-radius: 20px 20px 0 0;
}
.mega-card-arrow-icon svg {
  width: 35px;
  height: 28px;
}

/* -------------------------------------------------
   4. Header actions (theme‑toggle, burger)
   ------------------------------------------------- */
.header__actions {
  display: flex;
  gap: 15px;
  align-items: center;
}
.theme-toggle {
  padding: 8px 12px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); }

/* Burger button */
.mobile-btn {
  display: none;
  width: 48px;
  height: 48px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  cursor: pointer;
  transition: 0.25s ease;
}
.mobile-btn span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 3px;
  transition: 0.25s ease;
}
.mobile-btn.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.mobile-btn.active span:nth-child(2) { opacity: 0; }
.mobile-btn.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* =================================================
   2. Mobile Menu Container
================================================= */
.mobile-menu {
  position: fixed;
  top: 70px;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: calc(100vh - 70px);
  background: var(--bg-secondary);
  padding: 25px 15px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  transition: right 0.35s ease, opacity 0.35s ease;
  z-index: 1002;
  box-sizing: border-box;
}
.mobile-menu.open { right: 0; }

.mobile-menu::before {
  content: "Меню";
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: block;
}

/* =================================================
   3. Main Links
================================================= */
.mobile-menu__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.25s ease;
}
.mobile-menu__link::after {
  content: "›";
  font-size: 18px;
  color: var(--text-primary);
  transition: transform 0.25s ease, color 0.25s ease;
}
.mobile-menu__link:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  transform: translateX(3px);
}
.mobile-menu__link:hover::after {
  color: var(--accent);
  transform: translateX(3px);
}
.mobile-menu__link:active { transform: scale(0.97); }

/* =================================================
   4. Mobile Dropdown
================================================= */
.mobile-dropdown {
  display: flex;
  flex-direction: column;
}

.mobile-dropdown__btn {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.25s ease;
  color: var(--text-primary);
}
.mobile-dropdown__btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.mobile-dropdown.active .mobile-dropdown__btn {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.mobile-dropdown__arrow {
  font-size: 14px;
  transition: transform 0.3s ease;
}
.mobile-dropdown.active .mobile-dropdown__arrow {
  transform: rotate(180deg);
}

/* =================================================
   5. Submenu Items
================================================= */
.mobile-dropdown__content {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 10px;

}
.mobile-dropdown.active .mobile-dropdown__content {
  max-height: 1000px;
  gap: 15px;
  padding: 10px;
}

.mobile-submenu-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 15px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.25s ease;
}
.mobile-submenu-item:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  transform: translateX(2px);
}

.mobile-submenu-item-title-active{
  background: var(--accent-soft);
  border-color: var(--accent-soft-);
}

/* Submenu Text */
.mobile-submenu-item__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.mobile-submenu-item__title {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
}

.mobile-submenu-item__desc {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

/* Icons */
.mobile-submenu-item__icon {
  font-size: 26px;
  flex-shrink: 0;
}

/* Nested Submenu */
.mobile-submenu-list {
  list-style: none;
  padding-left: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0 0 0 15px;
}
.mobile-submenu-item-title.active > .mobile-submenu-list {
  max-height: 1000px;
  gap: 15px;
  padding: 15px 0 0 15px;
}

/* Arrow Rotation */
.mobile-submenu-item-title > .mobile-submenu-item__arrow {
  transition: transform 0.3s ease;
}
.mobile-submenu-item-title.active > .mobile-submenu-item__arrow {
  transform: rotate(180deg);
}

/* =================================================
   6. Overlay & Body Lock
================================================= */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 1001;
}
.mobile-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
body.menu-open {
  overflow: hidden;
}

/* =================================================
   7. Responsive
================================================= */
@media (max-width: 900px) {
  .header__nav { display: none; }
  .mobile-btn { display: flex; }
}