/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(7, 7, 7, 0.68);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  background: rgba(7, 7, 7, 0.92);
  border-bottom-color: rgba(var(--color-accent-rgb), 0.16);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 2vw, 2rem);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo img {
  height: 44px;
  width: auto;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 1.4vw, 2rem);
  position: relative;
}

.header__nav-links {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 1.25vw, 1.5rem);
}

.header__nav-link {
  font-size: 0.95rem;
  font-weight: var(--weight-bold);
  letter-spacing: -0.01em;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}
.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-white);
}
.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}
.header__nav-link:hover::after,
.header__nav-link--active::after {
  width: 100%;
}

.header__nav-mobile-cta {
  display: none;
}

.header__cta {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* Mobile menu toggle */
.header__toggle {
  display: none;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  color: var(--color-white);
  cursor: pointer;
  padding: 0.65rem 0.9rem;
}

.header__toggle-label {
  font-size: 0.75rem;
  font-weight: var(--weight-bold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.header__toggle-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.header__toggle-box span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: var(--radius-full);
  background: currentColor;
  transform-origin: center;
  transition: all var(--transition-base);
}

.header__toggle.is-open .header__toggle-box span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.header__toggle.is-open .header__toggle-box span:nth-child(2) {
  opacity: 0;
}

.header__toggle.is-open .header__toggle-box span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (min-width: 768px) and (max-width: 1023px) {
  .header__logo img {
    height: 40px;
  }

  .header__nav {
    gap: 1rem;
  }

  .header__nav-links {
    gap: 0.9rem;
  }

  .header__nav-link {
    font-size: 0.88rem;
  }

  .header__cta {
    padding-inline: 1rem;
  }
}

@media (max-width: 767px) {
  .header {
    height: 76px;
  }

  .header__inner {
    padding: 0 1.25rem;
  }

  .header__logo img {
    height: 40px;
  }

  .header__nav-links {
    display: none;
  }

  .header__toggle {
    display: inline-flex;
  }

  .header__nav-links--open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: calc(var(--header-height) - 8px);
    left: 1rem;
    right: 1rem;
    background: rgba(18, 14, 12, 0.96);
    border: 1px solid rgba(var(--color-accent-rgb), 0.22);
    border-radius: 28px;
    padding: 1rem;
    gap: 0.45rem;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }

  .header__nav-link {
    width: 100%;
    padding: 0.95rem 1rem;
    border-radius: 18px;
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.03);
  }

  .header__nav-link::after {
    display: none;
  }

  .header__nav-link:hover {
    color: var(--color-white);
    background: rgba(var(--color-accent-rgb), 0.12);
  }

  .header__nav-mobile-cta {
    display: inline-flex;
    width: 100%;
    margin-top: 0.35rem;
  }

  .header__cta {
    display: none;
  }
}