/* ============================================
   COREMETAL — Header & Navigation
   ============================================ */

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 var(--space-xl);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-base);
  background: transparent;
}

.header.scrolled {
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
  height: 70px;
}

/* ---------- Logo ---------- */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 1001;
}

.header__logo img {
  height: 50px;
  width: auto;
  transition: height var(--transition-base);
}

.header.scrolled .header__logo img {
  height: 42px;
}

.header__logo-text {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--clr-white);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.header__logo-text span {
  color: var(--clr-copper);
}

/* ---------- Desktop Navigation ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav__item {
  position: relative;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 28px 18px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-white);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
  color: var(--clr-copper);
}

/* Dropdown Arrow */
.nav__link .arrow {
  font-size: 10px;
  transition: transform var(--transition-fast);
}

.nav__item:hover .nav__link .arrow {
  transform: rotate(180deg);
}

/* ---------- Dropdown Menu ---------- */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 3px solid var(--clr-copper);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
  z-index: 999;
}

.nav__item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown__link {
  display: block;
  padding: 14px 24px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-regular);
  color: var(--clr-gray-300);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all var(--transition-fast);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dropdown__link:last-child {
  border-bottom: none;
}

.dropdown__link:hover {
  color: var(--clr-white);
  background: var(--clr-copper);
  padding-left: 30px;
}

/* ---------- Mobile Menu Toggle ---------- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  z-index: 1001;
  background: transparent;
  border: none;
  padding: 0;
}

.hamburger__line {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

/* Hamburger Animation */
.hamburger.active .hamburger__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active .hamburger__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ---------- Mobile Navigation ---------- */
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 998;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-overlay.active {
  opacity: 1;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 0 40px;
    transition: right var(--transition-base);
    overflow-y: auto;
    z-index: 999;
    border-left: 1px solid rgba(172, 133, 102, 0.2);
  }

  .nav.open {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .nav__item {
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .nav__link {
    padding: 16px 24px;
    width: 100%;
    justify-content: space-between;
  }

  /* Mobile Dropdown */
  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 100%;
    background: rgba(0, 0, 0, 0.5);
    border-top: none;
    box-shadow: none;
    display: none;
    transition: none;
  }

  .dropdown.mobile-open {
    display: block;
  }

  .dropdown__link {
    padding-left: 40px;
    font-size: var(--fs-xs);
  }

  .dropdown__link:hover {
    padding-left: 46px;
  }

  .hamburger {
    display: flex;
  }

  .mobile-overlay {
    display: block;
    pointer-events: none;
  }

  .mobile-overlay.active {
    pointer-events: all;
  }
}

@media (max-width: 768px) {
  .header {
    padding: 0 var(--space-md);
  }

  .header__logo-text {
    font-size: var(--fs-lg);
    letter-spacing: 2px;
  }

  .header__logo img {
    height: 40px;
  }
}

@media (max-width: 480px) {
  .header__logo-text {
    font-size: var(--fs-base);
    letter-spacing: 1px;
  }

  .nav {
    width: 280px;
    right: -300px;
  }
}