/* Header styles for Bohekrad */

.bk-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(248, 250, 252, 0.96), rgba(248, 250, 252, 0.85));
  border-bottom: 1px solid rgba(148, 163, 184, 0.28);
}

.bk-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.bk-header__brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.bk-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.bk-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: radial-gradient(circle at 20% 0, #eff6ff 0, #1d4ed8 28%, #f43f5e 92%);
  position: relative;
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.26);
  overflow: hidden;
}

.bk-header__logo-gradient {
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: radial-gradient(circle at 0 0, rgba(255, 255, 255, 0.9), transparent 55%);
}

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

.bk-header__site-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.03em;
}

.bk-header__site-tagline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Navigation */

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

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

.bk-header__nav-item {
  position: relative;
}

.bk-header__nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-700);
  white-space: nowrap;
  transition: background var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

.bk-header__nav-link:hover {
  background: rgba(37, 99, 235, 0.06);
  color: var(--color-primary-strong);
}

.bk-header__nav-link:focus-visible {
  outline: 2px solid transparent;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.6);
}

.bk-header__nav-item--highlight .bk-header__nav-link--cta {
  padding: 0.55rem 1.1rem;
  background-image: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.4);
}

.bk-header__nav-item--highlight .bk-header__nav-link--cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(37, 99, 235, 0.55);
}

/* Mobile layout */

.bk-header__nav-toggle {
  margin-left: auto;
}

.bk-header__nav {
  position: fixed;
  inset: 0 0 auto 0;
  top: 64px;
  background: rgba(15, 23, 42, 0.24);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transform: translateY(-120%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.bk-header__nav-list {
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-4);
  background: var(--color-surface);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  box-shadow: var(--shadow-md);
}

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

.bk-header--nav-open .bk-header__nav-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.bk-header--nav-open .bk-header__nav-toggle span:nth-child(2) {
  opacity: 0;
}

.bk-header--nav-open .bk-header__nav-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (min-width: 768px) {
  .bk-header__nav-toggle {
    display: none;
  }

  .bk-header__nav {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    background: transparent;
  }

  .bk-header__nav-list {
    flex-direction: row;
    padding: 0;
    background: transparent;
    box-shadow: none;
  }
}