/* Header styles for Fenestrax */

.fx-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-xs);
}

.fx-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.fx-header__brand {
  display: flex;
  align-items: center;
}

.fx-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-text);
}

.fx-header__logo-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.6rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-strong) 50%, var(--gray-800) 100%);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.fx-header__logo-mark::before,
.fx-header__logo-mark::after {
  content: "";
  position: absolute;
  inset: 0.28rem;
  border-radius: 0.45rem;
  border: 2px solid rgba(255, 255, 255, 0.65);
}

.fx-header__logo-mark::after {
  inset: 0.55rem 0.4rem 0.35rem 0.6rem;
  border-width: 0 0 0 2px;
}

.fx-header__logo-text {
  font-family: "DM Sans", var(--font-sans);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.fx-header__nav {
  display: flex;
  align-items: center;
}

.fx-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.fx-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-soft);
  padding: 0.25rem 0;
}

.fx-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

.fx-header__nav-link:hover,
.fx-header__nav-link:focus-visible {
  color: var(--color-text);
}

.fx-header__nav-link:hover::after,
.fx-header__nav-link:focus-visible::after {
  width: 100%;
}

.fx-header__nav-item--cta .fx-header__nav-link--btn {
  padding: 0.35rem 0.95rem;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-primary);
}

.fx-header__nav-item--cta .fx-header__nav-link--btn::after {
  display: none;
}

.fx-header__nav-item--cta .fx-header__nav-link--btn:hover,
.fx-header__nav-item--cta .fx-header__nav-link--btn:focus-visible {
  background-color: var(--color-primary-strong);
  border-color: var(--color-primary-strong);
  color: #ffffff;
}

/* Mobile toggle */

.fx-header__toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  align-items: center;
  justify-content: center;
  padding: 0;
}

.fx-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 2px;
}

.fx-header__toggle-bar {
  position: absolute;
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-normal), opacity var(--transition-normal), top var(--transition-normal), bottom var(--transition-normal);
}

.fx-header__toggle-bar:nth-child(1) {
  top: 0.8rem;
}

.fx-header__toggle-bar:nth-child(2) {
  top: 1.2rem;
}

.fx-header__toggle-bar:nth-child(3) {
  bottom: 0.8rem;
}

.fx-header__toggle--open .fx-header__toggle-bar:nth-child(1) {
  top: 1.2rem;
  transform: rotate(45deg);
}

.fx-header__toggle--open .fx-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.fx-header__toggle--open .fx-header__toggle-bar:nth-child(3) {
  bottom: 1.25rem;
  transform: rotate(-45deg);
}

/* Responsive behavior */

@media (max-width: 900px) {
  .fx-header__toggle {
    display: inline-flex;
  }

  .fx-header__nav {
    position: fixed;
    inset: 4.25rem 0 auto 0;
    background-color: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
  }

  .fx-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .fx-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    width: 100%;
    padding: 0.5rem 1.5rem 1.25rem;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-subtle);
  }

  .fx-header__nav-item {
    width: 100%;
  }

  .fx-header__nav-link,
  .fx-header__nav-item--cta .fx-header__nav-link--btn {
    display: block;
    width: 100%;
    padding: 0.7rem 0;
  }

  .fx-header__nav-item--cta .fx-header__nav-link--btn {
    text-align: center;
    margin-top: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fx-header__nav,
  .fx-header__toggle-bar {
    transition: none !important;
  }
}