/* ============================================================
   KN Constructions — Header Component
   Floating Liquid Glass Pill (Premium Balanced Grid)
   ============================================================ */

/* ---------- Base Header Wrapper ---------- */
.kn-floating-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--kn-z-header);
  padding: var(--kn-space-4) var(--kn-container-pad);
  pointer-events: none;
  transition: padding var(--kn-dur-base) var(--kn-ease-out);
}

.kn-floating-header.is-scrolled {
  padding-top: var(--kn-space-2);
  padding-bottom: var(--kn-space-2);
}

/* ---------- The Glass Pill (3-Column Grid) ---------- */
.kn-header-pill {
  pointer-events: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr; /* This centers the middle nav perfectly */
  align-items: center;
  max-width: var(--kn-container-lg);
  margin: 0 auto;
  padding: var(--kn-space-2) var(--kn-space-4) var(--kn-space-2) var(--kn-space-5);
  background: var(--kn-glass-bg);
  backdrop-filter: blur(var(--kn-glass-blur)) saturate(var(--kn-glass-sat));
  -webkit-backdrop-filter: blur(var(--kn-glass-blur)) saturate(var(--kn-glass-sat));
  border: 1px solid var(--kn-glass-border);
  border-radius: var(--kn-radius-full);
  box-shadow: var(--kn-glass-shadow);
  transition: all var(--kn-dur-base) var(--kn-ease-out);
}

.kn-floating-header.is-scrolled .kn-header-pill {
  background: rgba(250, 247, 242, 0.95);
  box-shadow: var(--kn-shadow-lg);
}

/* ---------- Brand / Logo ---------- */
.kn-header-brand {
  justify-self: start;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.kn-brand-logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--kn-dur-fast) var(--kn-ease-out);
}

.kn-header-brand:hover .kn-brand-logo-img {
  opacity: 0.8;
}

/* ---------- Desktop Navigation (Centered & Spaced) ---------- */
.kn-header-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: var(--kn-space-6); /* 32px gap - gives them room to breathe */
}

.kn-nav-item {
  font-family: var(--kn-font-sans);
  font-size: 15px; /* Slightly larger for premium feel */
  font-weight: var(--kn-fw-medium);
  color: var(--kn-ink-soft);
  text-decoration: none;
  position: relative;
  padding: var(--kn-space-2) 0;
  letter-spacing: 0.01em;
  transition: color var(--kn-dur-fast) var(--kn-ease-out);
  white-space: nowrap;
}

.kn-nav-item:hover,
.kn-nav-item.is-active {
  color: var(--kn-brass);
}

/* Underline hover effect */
.kn-nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--kn-brass);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--kn-dur-base) var(--kn-ease-out);
}

.kn-nav-item:hover::after,
.kn-nav-item.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ---------- Header Actions (Right aligned) ---------- */
.kn-header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: var(--kn-space-3);
}

/* CTA Pill Button */
.kn-cta-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--kn-space-2);
  background: var(--kn-brass);
  color: var(--kn-paper);
  font-family: var(--kn-font-sans);
  font-size: 14px;
  font-weight: var(--kn-fw-medium);
  padding: var(--kn-space-2) var(--kn-space-4) var(--kn-space-2) var(--kn-space-5);
  border-radius: var(--kn-radius-full);
  text-decoration: none;
  transition: all var(--kn-dur-base) var(--kn-ease-out);
  white-space: nowrap;
}

.kn-cta-pill:hover {
  background: var(--kn-brass-deep);
  transform: translateY(-1px);
  box-shadow: var(--kn-shadow-md);
}

.kn-cta-pill-arrow {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  transition: transform var(--kn-dur-base) var(--kn-ease-spring);
}

.kn-cta-pill:hover .kn-cta-pill-arrow {
  transform: translateX(3px);
}

/* Mobile Toggle Button (Hidden on Desktop) */
.kn-mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--kn-paper);
  border: 1px solid var(--kn-line-strong);
  cursor: pointer;
  position: relative;
  z-index: calc(var(--kn-z-overlay) + 10);
  transition: all var(--kn-dur-base) var(--kn-ease-out);
  box-shadow: var(--kn-shadow-sm);
}

.kn-mobile-toggle:hover {
  background: var(--kn-white);
  box-shadow: var(--kn-shadow-md);
}

.kn-mobile-toggle.is-active {
  background: var(--kn-ink);
  border-color: var(--kn-ink);
  box-shadow: var(--kn-shadow-lg);
}

.kn-toggle-bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  position: relative;
}

.kn-toggle-bar {
  width: 18px;
  height: 2px;
  background: var(--kn-ink);
  border-radius: 2px;
  transition: all var(--kn-dur-base) var(--kn-ease-out);
}

.kn-mobile-toggle.is-active .kn-toggle-bar {
  background: var(--kn-paper);
}

.kn-mobile-toggle.is-active .kn-toggle-bar:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}
.kn-mobile-toggle.is-active .kn-toggle-bar:nth-child(2) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ---------- Responsive adjustments for smaller laptops ---------- */
@media (max-width: 1200px) {
  .kn-header-nav {
    gap: var(--kn-space-4); /* Reduce gap slightly on smaller screens */
  }
  .kn-nav-item {
    font-size: 14px;
  }
}

/* ---------- Mobile Menu Overlay ---------- */
@media (max-width: 1024px) {
  .kn-header-pill {
    display: flex; /* Switch back to flex on mobile */
    justify-content: space-between;
    padding: var(--kn-space-2) var(--kn-space-3) var(--kn-space-2) var(--kn-space-4);
  }

  .kn-header-nav,
  .kn-cta-pill {
    display: none; /* Hide desktop nav */
  }
  
  .kn-mobile-toggle {
    display: block; /* Show hamburger */
  }
}

.kn-mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--kn-paper);
  z-index: var(--kn-z-overlay);
  padding: calc(var(--kn-header-h) + var(--kn-space-6)) var(--kn-container-pad) var(--kn-space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--kn-dur-base) var(--kn-ease-out);
  overflow-y: auto;
}

/* Mobile Close Button */
.kn-mobile-close {
  position: absolute;
  top: calc(var(--kn-header-h) + var(--kn-space-3));
  right: var(--kn-container-pad);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--kn-white);
  border: 1px solid var(--kn-line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--kn-ink);
  transition: all var(--kn-dur-base) var(--kn-ease-out);
  z-index: calc(var(--kn-z-overlay) + 5);
}

.kn-mobile-close:hover {
  background: var(--kn-ink);
  color: var(--kn-paper);
  transform: rotate(90deg);
}

.kn-mobile-menu.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.kn-mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--kn-space-4);
}

.kn-mobile-nav-item {
  border-bottom: 1px solid var(--kn-line);
  padding-bottom: var(--kn-space-3);
}

.kn-mobile-nav-link {
  display: flex;
  align-items: baseline;
  gap: var(--kn-space-4);
  font-family: var(--kn-font-serif);
  font-size: var(--kn-fs-3xl);
  color: var(--kn-ink);
  text-decoration: none;
  transition: color var(--kn-dur-fast);
}

.kn-mobile-nav-link:hover,
.kn-mobile-nav-link.is-active {
  color: var(--kn-brass);
}

.kn-mobile-nav-idx {
  font-family: var(--kn-font-sans);
  font-size: var(--kn-fs-sm);
  color: var(--kn-brass);
  font-weight: var(--kn-fw-semibold);
}

.kn-mobile-card {
  background: var(--kn-white);
  padding: var(--kn-space-5);
  border-radius: var(--kn-radius-lg);
  box-shadow: var(--kn-shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--kn-space-4);
}

.kn-mobile-meta {
  display: flex;
  flex-direction: column;
  gap: var(--kn-space-3);
}

.kn-mobile-meta-label {
  display: block;
  font-size: var(--kn-fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--kn-ls-eyebrow);
  color: var(--kn-slate);
  margin-bottom: 2px;
}

.kn-mobile-meta-val {
  font-size: var(--kn-fs-base);
  font-weight: var(--kn-fw-medium);
  color: var(--kn-ink);
  text-decoration: none;
}

.kn-mobile-cta-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--kn-space-2);
  background: var(--kn-ink);
  color: var(--kn-paper);
  padding: var(--kn-space-3);
  border-radius: var(--kn-radius-md);
  text-decoration: none;
  font-weight: var(--kn-fw-medium);
}