/* ===========================
   HEADER SECTION CSS
   =========================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--elements-transparent-fill, rgba(13, 13, 13, 0.01));
  backdrop-filter: blur(0px);
  height: 80px;
  transition: all var(--transition-base);
}

.header.scrolled {
  background: linear-gradient(180deg, #0C0C0C 0%, rgba(12, 12, 12, 0.00) 100%);
  backdrop-filter: blur(3px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--spacing-4xl);
  max-width: 1440px;
  margin: 0 auto;
}

.header__logo {
  width: 179px;
  height: 34px;
  cursor: pointer;
  transition: transform var(--transition-base);
}

.header__logo:hover {
  transform: scale(1.05);
}

.header__nav {
  flex: 1;
  display: flex;
  justify-content: right;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-3xl);
}

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 0;
  font-weight: 600;
  font-size: var(--font-size-md);
  color: var(--color-text-main);
  position: relative;
  transition: all var(--transition-base);
  background: linear-gradient(192deg, rgba(255, 255, 255, 1) 0%, rgba(192, 192, 192, 1) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__nav-link:hover {
  color: var(--color-text-white);
  -webkit-text-fill-color: var(--color-text-white);
}

.header__nav-link--active {
  color: var(--color-text-white);
  -webkit-text-fill-color: var(--color-text-white);
  border-bottom: 2px solid var(--color-primary);
}

/* Mobile Menu Toggle */
.header__menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 24px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  /* Safari iOS fix */
  -webkit-touch-callout: none;
  -webkit-user-select: none;
}

.header__menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-white);
  transition: all var(--transition-base);
  transform-origin: center;
}

.header__menu-toggle.active span:nth-child(1) {
  transform: translateY(11px) rotate(45deg);
}

.header__menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.header__menu-toggle.active span:nth-child(3) {
  transform: translateY(-11px) rotate(-45deg);
}

/* Mobile Navigation */
@media (max-width: 1024px) {
  .header__container {
    padding: 0 var(--spacing-3xl);
  }

  .header__nav-list {
    gap: var(--spacing-2xl);
  }
}

@media (max-width: 768px) {
  .header__container {
    padding: 0 var(--spacing-lg);
  }

  .header__menu-toggle {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    justify-content: center;
    background: rgba(13, 13, 13, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-xl) 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .header__nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .header__nav-list {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .header__nav-link {
    font-size: var(--font-size-lg);
    padding: var(--spacing-sm) 0;
  }
}

@media (max-width: 480px) {
  .header__container {
    padding: 0 var(--spacing-md);
  }

  .header__logo {
    width: 140px;
    height: auto;
  }
}