/* Header-specific styles for Ceska Vibe */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
}

.site-header-inner {
  position: relative;
}

/* Brand */
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: radial-gradient(circle at top left, rgba(251,191,36,0.16), transparent 55%),
              radial-gradient(circle at bottom right, rgba(56,189,248,0.16), transparent 60%),
              #ffffff;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226,232,240,0.9);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.9rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-coral));
  color: #111827;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
}

.brand-subtitle {
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Desktop navigation */
.site-nav-link {
  position: relative;
}

.site-nav-cta {
  padding-inline: 1rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary-soft), #fff);
  border: 1px solid rgba(250, 204, 21, 0.7);
  box-shadow: var(--shadow-sm);
}

.site-nav-cta:hover {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-green));
  color: #111827;
}

/* Mobile header layout */
.site-header-mobile {
  display: none;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-link--mobile {
  box-shadow: none;
  border-radius: 999px;
  padding-inline: 0.5rem;
}

.brand-link--mobile .brand-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
}

.brand-link--mobile .brand-title {
  font-size: 0.9rem;
}

/* Hamburger button */
.mobile-menu-toggle {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--gray-200);
  background-color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.23rem;
  cursor: pointer;
  transition: box-shadow var(--transition-base), transform var(--transition-fast), border-color var(--transition-base), background-color var(--transition-base);
}

.mobile-menu-toggle-bar {
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.mobile-menu-toggle:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 3px;
}

.mobile-menu-toggle.is-active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-soft);
  box-shadow: var(--shadow-md);
}

.mobile-menu-toggle.is-active .mobile-menu-toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(42deg);
}

.mobile-menu-toggle.is-active .mobile-menu-toggle-bar:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.is-active .mobile-menu-toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-42deg);
}

/* Mobile nav panel */
.mobile-nav {
  position: fixed;
  inset: var(--header-height) 0 auto 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 45px rgba(15,23,42,0.16);
  z-index: 39;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.mobile-nav-inner {
  padding: var(--space-4) var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-nav-link {
  padding: 0.7rem 0.4rem;
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--color-text-soft);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  background-color: var(--gray-50);
  color: var(--color-text);
}

.mobile-nav-link--primary {
  margin-top: var(--space-2);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-blue));
  color: #111827;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.mobile-nav.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Responsive behaviour */
@media (max-width: 959.98px) {
  .site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    height: var(--header-height);
  }

  .site-header-logo {
    display: none;
  }

  .site-header-nav-left,
  .site-header-nav-right {
    display: none;
  }

  .site-header-mobile {
    display: flex;
  }
}

@media (min-width: 960px) {
  .site-header-mobile,
  .mobile-nav {
    display: none;
  }
}