/* Header styles for Dravoniixa */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(245, 246, 248, 0.96), rgba(245, 246, 248, 0.88));
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: 0.85rem;
}

.site-header__branding {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.site-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 20% 20%, var(--color-primary-soft), transparent 55%),
              linear-gradient(135deg, var(--color-primary-strong), var(--color-primary));
  box-shadow: var(--shadow-soft);
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
}

.site-header__brand-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gray-900);
}

.site-header__brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.site-header__nav {
  flex: 0 1 auto;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gray-700);
  text-decoration: none;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 0;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary-strong), var(--color-primary));
  transition: width var(--transition-normal);
}

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

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-header__action-link {
  font-size: var(--font-size-xs);
}

.site-header__icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-gray-700);
  cursor: pointer;
  transition: background-color var(--transition-normal),
              color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-fast);
}

.site-header__icon-button:hover {
  background-color: #ffffff;
  color: var(--color-primary-strong);
  box-shadow: var(--shadow-soft);
  transform: translateY(-1px);
}

.site-header__icon-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-subtle);
}

.site-header__icon-button:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 2px;
}

/* Mobile nav toggle */

.site-header__nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--color-gray-800);
  cursor: pointer;
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header__nav-toggle-box {
  position: relative;
  width: 18px;
  height: 14px;
}

.site-header__nav-toggle-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-800);
  transition: transform var(--transition-normal),
              opacity var(--transition-fast),
              top var(--transition-normal),
              bottom var(--transition-normal);
}

.site-header__nav-toggle-line:first-child {
  top: 2px;
}

.site-header__nav-toggle-line:last-child {
  bottom: 2px;
}

.site-header__nav-toggle[aria-expanded="true"] .site-header__nav-toggle-line:first-child {
  top: 6px;
  transform: rotate(45deg);
}

.site-header__nav-toggle[aria-expanded="true"] .site-header__nav-toggle-line:last-child {
  bottom: 6px;
  transform: rotate(-45deg);
}

.site-header__nav-toggle-text {
  font-weight: 500;
}

.site-header__nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 2px;
}

/* Responsive layout */

@media (max-width: 960px) {
  .site-header__inner {
    gap: var(--space-2);
  }

  .site-header__brand-tagline {
    display: none;
  }

  .site-header__actions {
    gap: 0.25rem;
  }

  .site-header__action-link {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-header__nav-toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: rgba(245, 246, 248, 0.98);
    border-bottom: 1px solid rgba(148, 163, 184, 0.35);
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.16);
    transform-origin: top;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem 1.5rem 1.1rem;
  }

  .site-header__nav-link {
    padding-block: 0.25rem;
    font-size: var(--font-size-sm);
  }

  /* Mobile menu: start visible for no-JS, hide when JS adds helper class */
  .js-nav-enhanced .site-header__nav {
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-normal), visibility 0s linear var(--transition-normal);
  }

  .js-nav-enhanced .site-header__nav--open {
    max-height: 18rem;
    opacity: 1;
    visibility: visible;
    transition: max-height var(--transition-slow), opacity var(--transition-normal);
  }
}

@media (min-width: 769px) {
  .site-header__nav {
    position: static;
  }
}