/* Header-specific styling for Kasiflowna */

.header-shell {
  background: rgba(245, 248, 255, 0.9);
  backdrop-filter: blur(18px);
}

.header-shell__inner {
  position: relative;
}

/* Logo styling */
.header-logo-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 55%),
              radial-gradient(circle at bottom right, rgba(34, 197, 94, 0.12), transparent 55%);
}

.header-logo-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.9rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
}

.header-logo-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.header-logo-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text);
}

.header-logo-subtitle {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary-strong);
  opacity: 0.9;
}

/* Desktop nav layout adjustments */
.header-shell__nav-left,
.header-shell__nav-right {
  gap: var(--space-5);
}

.header-shell__link {
  font-size: var(--fs-sm);
}

/* Mobile toggle */
.header-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-pill);
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
}

.header-toggle-bar {
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.header-toggle.is-open .header-toggle-bar:first-child {
  transform: translateY(3px) rotate(45deg);
}

.header-toggle.is-open .header-toggle-bar:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

/* Mobile nav panel */
.mobile-nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  padding-top: 4.25rem; /* space for sticky header */
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(18px);
  z-index: 30;
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

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

.mobile-nav-inner {
  background: var(--color-bg-elevated);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

.mobile-nav-group {
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(34, 197, 94, 0.04));
}

.mobile-nav-link {
  display: block;
  padding-block: 0.35rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text);
}

.mobile-nav-link[aria-current="page"] {
  color: var(--color-primary-strong);
}

.mobile-nav-cta {
  padding-inline: var(--space-1);
}

.mobile-nav-btn {
  width: 100%;
}

/* Responsive behavior */
@media (max-width: 767.98px) {
  .header-shell__nav-left,
  .header-shell__nav-right {
    display: none;
  }

  .header-toggle {
    display: inline-flex;
    flex-direction: column;
    z-index: 999;
  }

  .site-header-inner {
    grid-template-columns: auto 1fr auto;
  }

  .header-logo-link {
    margin-inline: auto;
  }
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none;
  }
}