/* ===== HEADER ===== */
header {
  background-color: var(--ligth-bg-color);
  position: fixed;
  z-index: 10000;
  left: 0;
  right: 0;
  padding: 10px 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* ===== LOGO ===== */
.site-logo {
  font-family: "Montserrat", sans-serif;
  font-size: 26px;
  font-weight: 700;
  text-decoration: none;
  color: var(--main-bg-color);
  letter-spacing: -0.02em;
  line-height: 1;
  position: relative;
}

.site-logo span {
  color: var(--gold-color);
  font-style: italic;
}

/* ===== NAV ===== */
.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-list {
  display: flex;
  gap: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 18px 24px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--main-bg-color);
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.nav-link:hover {
  border-bottom-color: var(--gold-color);
}

/* ===== DROPDOWN ===== */
.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--ligth-bg-color);
  padding: 16px 0;
  z-index: 100;
}

.nav-item:hover .nav-dropdown {
  display: block;
}

.nav-dropdown ul {
  padding: 0;
}

.nav-dropdown li a {
  display: block;
  padding: 10px 24px;
  font-size: 16px;
  color: var(--dark-text-color);
  text-decoration: none;
  transition: background-color 0.15s;
  -webkit-transition: background-color 0.15s;
  -moz-transition: background-color 0.15s;
  -ms-transition: background-color 0.15s;
  -o-transition: background-color 0.15s;
}

.nav-dropdown li a:hover {
  background-color: var(--gold-color);
  color: var(--ligth-text-color);
}

.nav-dropdown-calc {
  display: block;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  color: #e84393;
  border-top: 1px solid #e0e0e0;
  margin-top: 8px;
  transition: background-color 0.15s;
}

.nav-dropdown-calc:hover {
  background-color: #e84393;
  color: #fff;
}

.nav-view-all {
  display: block;
  padding: 12px 24px 4px;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-decoration: none;
  color: var(--dark-text-color);
  border-top: 1px solid #e0e0e0;
  margin-top: 8px;
}

.nav-view-all:hover {
  text-decoration: underline;
}

/* --- burger button --- */
.nav-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--main-bg-color);
  position: relative;
  z-index: 10002;
}

/* burger icon lines → X animation */
.nav-burger svg {
  overflow: visible;
}

.nav-burger svg .line-top,
.nav-burger svg .line-mid,
.nav-burger svg .line-bot {
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: 12px 12px;
}

.nav-burger.active .line-top {
  transform: rotate(45deg) translateY(6px);
}

.nav-burger.active .line-mid {
  opacity: 0;
}

.nav-burger.active .line-bot {
  transform: rotate(-45deg) translateY(-6px);
}

/* ===== RESPONSIVE HEADER ===== */
@media (max-width: 1200px) {
  .nav-link {
    padding: 18px 14px;
    font-size: 12px;
  }
}

@media (max-width: 960px) {
  .nav-burger {
    display: block;
  }

  /* logo above overlay */
  .site-logo {
    z-index: 10002;
  }

  /* fullscreen overlay menu */
  .nav-list {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10001;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background-color: var(--ligth-bg-color);
    padding: 80px 32px 40px;
    overflow-y: auto;

    /* hidden by default */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
  }

  .nav-list.open {
    display: flex;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-item {
    width: 100%;
  }

  /* category links */
  .nav-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    color: var(--main-bg-color);
  }

  .nav-item:last-child .nav-link {
    border-bottom: none;
  }

  /* hide submenus in mobile */
  .nav-dropdown {
    display: none !important;
  }

  /* lock body scroll when menu is open */
  body.nav-open {
    overflow: hidden;
  }
}