/* ==========================================================================
   KiteLine Lawn Care — Main Navigation
   ========================================================================== */

.kl-header {
  --nav-fg: var(--kl-warm-white);
  --nav-fg-muted: rgba(245, 243, 236, 0.75);
  --nav-hover: var(--kl-gold);

  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s var(--kl-ease), border-color 0.25s var(--kl-ease);
}

.kl-header.is-scrolled {
  --nav-fg: var(--kl-evergreen);
  --nav-fg-muted: var(--kl-evergreen-60);
  --nav-hover: var(--kl-charcoal);

  background: var(--kl-warm-white);
  border-bottom-color: var(--kl-rule);
}

.kl-header__inner {
  max-width: var(--kl-max-width);
  margin: 0 auto;
  padding: 0 var(--kl-gutter);
  height: 92px;
  display: flex;
  align-items: center;
  gap: 40px;
  transition: height 0.25s var(--kl-ease);
}

.kl-header.is-scrolled .kl-header__inner {
  height: 68px;
}

/* ---- Brand -------------------------------------------------------------- */

.kl-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--nav-fg);
  margin-right: auto;
  transition: color 0.25s var(--kl-ease);
}

.kl-brand__mark {
  display: flex;
  flex-shrink: 0;
  color: var(--nav-fg);
  transition: color 0.25s var(--kl-ease), width 0.25s var(--kl-ease), height 0.25s var(--kl-ease);
}

.kl-brand__mark svg {
  width: 34px;
  height: 34px;
  display: block;
  transition: width 0.25s var(--kl-ease), height 0.25s var(--kl-ease);
}

.kl-header.is-scrolled .kl-brand__mark svg {
  width: 27px;
  height: 27px;
}

.kl-brand__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1;
}

.kl-brand__eyebrow {
  font-family: var(--kl-font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nav-fg-muted);
  white-space: nowrap;
  transition: color 0.25s var(--kl-ease), opacity 0.2s var(--kl-ease), max-height 0.25s var(--kl-ease), margin 0.25s var(--kl-ease);
  overflow: hidden;
}

.kl-header.is-scrolled .kl-brand__eyebrow {
  opacity: 0;
  max-height: 0;
}

.kl-brand__word {
  font-family: var(--kl-font-display);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--nav-fg);
  white-space: nowrap;
  transition: color 0.25s var(--kl-ease);
}

/* ---- Primary nav ---------------------------------------------------------- */

.kl-nav__list {
  display: flex;
  align-items: center;
  gap: 36px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kl-nav__list a {
  position: relative;
  display: inline-block;
  padding: 6px 0;
  font-family: var(--kl-font-display);
  font-weight: 600;
  font-size: 15px;
  color: var(--nav-fg);
  text-decoration: none;
  transition: color 0.2s var(--kl-ease);
}

.kl-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--kl-gold);
  transition: right 0.25s var(--kl-ease);
}

.kl-nav__list a:hover {
  color: var(--nav-hover);
}

.kl-nav__list a:hover::after,
.kl-nav__list a:focus-visible::after {
  right: 0;
}

/* ---- CTA button ----------------------------------------------------------- */

.kl-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--kl-font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
}

.kl-btn--primary {
  background: var(--kl-gold);
  color: var(--kl-charcoal);
  padding: 6px 6px 6px 24px;
  transition: background-color 0.2s var(--kl-ease);
}

.kl-btn--primary:hover,
.kl-btn--primary:focus-visible {
  background: var(--kl-gold-dark);
}

.kl-btn__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background: var(--kl-evergreen);
  color: var(--kl-warm-white);
  font-size: 14px;
  transition: transform 0.2s var(--kl-ease), background-color 0.2s var(--kl-ease);
}

.kl-btn--primary:hover .kl-btn__arrow,
.kl-btn--primary:focus-visible .kl-btn__arrow {
  transform: translateX(3px);
}

.kl-btn--block {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 6px 6px 6px 24px;
}

/* ---- Mobile menu toggle ---------------------------------------------------- */

.kl-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.kl-menu-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--nav-fg);
  transition: background-color 0.25s var(--kl-ease), transform 0.25s var(--kl-ease), opacity 0.2s var(--kl-ease);
}

.kl-menu-toggle[aria-expanded="true"] .kl-menu-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.kl-menu-toggle[aria-expanded="true"] .kl-menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

.kl-menu-toggle[aria-expanded="true"] .kl-menu-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile menu panel ------------------------------------------------------ */

.kl-mobile-menu {
  display: none;
  border-top: 1px solid var(--kl-rule);
  background: var(--kl-warm-white);
  padding: 8px var(--kl-gutter) 28px;
}

.kl-mobile-menu.is-open {
  display: block;
}

.kl-mobile-menu ul {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.kl-mobile-menu a {
  display: block;
  padding: 14px 0;
  border-bottom: 1px solid var(--kl-rule);
  font-family: var(--kl-font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--kl-evergreen);
  text-decoration: none;
}

.kl-mobile-menu .kl-btn {
  display: flex;
  padding: 6px 6px 6px 24px;
  border-bottom: none;
  color: var(--kl-charcoal);
}

/* ---- Responsive ------------------------------------------------------------- */

@media (max-width: 1024px) {
  .kl-nav {
    display: none;
  }

  .kl-header__cta {
    display: none;
  }

  .kl-menu-toggle {
    display: flex;
  }
}

@media (max-width: 480px) {
  .kl-brand__eyebrow {
    display: none;
  }
}