/* DERApi-inspired mega-menu nav for kWh preview site */
:root {
  --nav-h: 64px;
}

.kwh-nav,
.site-nav.kwh-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px clamp(16px, 4vw, 48px);
  background: #FFFBF0;
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
  transition: box-shadow 0.25s;
}
.kwh-nav.is-scrolled { box-shadow: 0 1px 0 rgba(0,0,0,0.10); }

.kwh-nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  text-decoration: none;
}
.kwh-nav-brand img { height: 24px; width: auto; display: block; }
.kwh-nav-brand .mark-light { display: none; }
.kwh-nav-brand .mark-dark { display: block; }

.kwh-nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.kwh-nav-links > a,
.kwh-nav-links > .kwh-nav-item > button {
  font-size: 18px;
  font-weight: 500;
  color: var(--dark);
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 12px;
  font-family: inherit;
  transition: opacity 0.15s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.kwh-nav-links > a:hover,
.kwh-nav-links > .kwh-nav-item > button:hover { opacity: 0.6; }

.kwh-nav-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--bronze);
  flex-shrink: 0;
  margin: 0 2px;
}

.kwh-nav-item { position: relative; }
.kwh-nav-item > button svg {
  width: 10px;
  height: 10px;
  opacity: 0.7;
  transition: transform 0.2s;
}
.kwh-nav-item.is-open > button svg { transform: rotate(180deg); }

.kwh-mega {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 340px;
  background: #FFFBF0;
  border: 1px solid #E3D2B0;
  border-radius: 2px;
  padding: 6px;
  box-shadow: 0 18px 44px rgba(60,40,15,0.16);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s, visibility 0.2s, transform 0.2s;
  transform: translateX(-50%) translateY(-6px);
}
/* Invisible bridge so the pointer never crosses a dead gap between
   the Solutions button and the panel (this was closing the menu). */
.kwh-mega::before {
  content: '';
  position: absolute;
  left: -24px;
  right: -24px;
  top: -18px;
  height: 18px;
}
.kwh-nav-item.is-open .kwh-mega,
.kwh-nav-item:hover .kwh-mega {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.kwh-mega a {
  display: block;
  padding: 14px 16px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s;
}
.kwh-mega a + a { border-top: 1px solid #EFE3C9; }
.kwh-mega a:hover { background: #F4EEE1; }
.kwh-mega strong {
  display: block;
  font-size: 18px;
  font-weight: 600;
  color: #0B0B0E;
  margin-bottom: 4px;
}
.kwh-mega a:hover strong { color: var(--bronze); }
.kwh-mega span {
  display: block;
  font-size: 16px;
  color: #7A6A4C;
  line-height: 1.45;
}

/* Demo + Sign In: same treatment as every other nav link (no pill, no divider) */
.kwh-nav-demo,
.kwh-nav-signin {
  display: inline-flex !important;
  align-items: center;
  font-size: 18px !important;
  font-weight: 500 !important;
  letter-spacing: normal !important;
  text-transform: none !important;
  padding: 8px 12px !important;
  margin-left: 0 !important;
  border: 0 !important;
  background: none !important;
  color: var(--dark) !important;
}
.kwh-nav-demo:hover,
.kwh-nav-signin:hover { opacity: 0.6; }

.kwh-nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  color: var(--dark);
  cursor: pointer;
}

.kwh-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 999;
}
.kwh-nav-overlay.is-visible { display: block; }

@media (max-width: 900px) {
  .kwh-nav-toggle { display: block; }
  .kwh-nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--cream);
    padding: 16px;
    overflow-y: auto;
    z-index: 1001;
  }
  .kwh-nav.is-open .kwh-nav-links { display: flex; }
  .kwh-nav-links > a,
  .kwh-nav-links > .kwh-nav-item > button {
    color: var(--dark) !important;
    padding: 14px 8px;
    border-bottom: 1px solid var(--border);
    justify-content: space-between;
  }
  .kwh-nav-dot { display: none; }
  .kwh-nav-signin { border-left: none !important; padding-left: 8px !important; }
  .kwh-mega {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    min-width: 0;
    box-shadow: none;
    border: none;
    background: var(--cream-soft);
    margin: 0 0 8px;
    display: none;
  }
  .kwh-nav-item.is-open .kwh-mega { display: block; }
  .kwh-nav-item:hover .kwh-mega { display: none; }
  .kwh-nav-item.is-open:hover .kwh-mega { display: block; }
  .kwh-mega a { padding: 12px; }
  .kwh-mega strong { color: var(--brown); }
  .kwh-mega span { color: var(--muted); }
}