/* LCS — icon mega navigation (stacked) */

.lcs-nav {
  position: fixed;
  left: 50%;
  bottom: max(0.75rem, var(--safe-bottom, env(safe-area-inset-bottom, 0px)));
  transform: translate3d(-50%, 0, 0);
  z-index: 500;
  width: min(calc(4 * var(--nav-btn-size, 3.35rem) + 8px), calc(100% - 1rem));
  pointer-events: auto;
  box-sizing: border-box;
}

.lcs-nav--5 {
  width: min(calc(5 * var(--nav-btn-size, 3.35rem) + 10px), calc(100% - 1rem));
}

.lcs-nav__stack {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: auto;
  align-items: center;
  isolation: isolate;
}

.lcs-nav__bar {
  --nav-btn-size: 3.35rem;
  display: grid;
  grid-template-columns: repeat(4, var(--nav-btn-size));
  gap: 0;
  background: var(--cream);
  border: 2px solid var(--black);
  box-shadow: 6px 6px 0 var(--black);
  order: 10;
  width: fit-content;
  max-width: 100%;
  margin-inline: auto;
}

.lcs-nav__bar--5 {
  grid-template-columns: repeat(5, var(--nav-btn-size));
}

.lcs-nav__bar--4 {
  grid-template-columns: repeat(4, var(--nav-btn-size));
}

.lcs-nav__item {
  min-width: 0;
  width: var(--nav-btn-size);
}

.lcs-nav__btn {
  width: 100%;
  height: var(--nav-btn-size);
  min-height: var(--nav-btn-size);
  display: grid;
  place-items: center;
  border: 0;
  background: transparent;
  color: var(--black);
  cursor: pointer;
  text-decoration: none;
  margin: 0;
  padding: 0;
  border-right: 2px solid var(--black);
  transition: background 0.22s ease, color 0.22s ease;
  font-family: inherit;
  box-sizing: border-box;
}

.lcs-nav__item:last-child .lcs-nav__btn {
  border-right: 0;
}

.lcs-nav__btn:hover,
.lcs-nav__btn[aria-expanded="true"],
.lcs-nav__btn.is-active,
.lcs-nav__btn.is-chat-open {
  background: var(--black);
  color: var(--cream);
}

.lcs-nav__btn .ti {
  font-size: 1.45rem;
  line-height: 1;
}

/* Mega panels — in stack (no hover gap) */
.lcs-nav__mega {
  background: var(--cream);
  color: var(--black);
  border: 2px solid var(--black);
  box-shadow: 8px 8px 0 var(--black);
  padding: 1rem;
  max-height: min(70vh, 480px);
  overflow-y: auto;
  order: 5;
}

.lcs-nav__mega[hidden] {
  display: none !important;
  visibility: hidden;
  pointer-events: none;
}

.lcs-nav__mega.is-open {
  display: block;
  visibility: visible;
}

.lcs-nav__mega-title {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  margin: 0 0 0.75rem;
  opacity: 0.65;
}

.lcs-nav__mega-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.4rem;
}

.lcs-nav__mega-grid--aux {
  margin-top: 0.5rem;
}

.lcs-nav__mega-link,
.lcs-nav__mega-link--btn {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.75rem;
  text-decoration: none;
  color: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  border: 0;
  margin: 0;
  box-shadow: none;
  transition: background 0.22s ease, color 0.22s ease;
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  width: 100%;
  -webkit-tap-highlight-color: transparent;
}

.lcs-nav__mega-link:hover,
.lcs-nav__mega-link--btn:hover,
.lcs-nav__mega-link:focus-visible,
.lcs-nav__mega-link--btn:focus-visible {
  background: var(--black);
  color: var(--cream);
  z-index: 1;
}

.lcs-nav__mega-link .ti,
.lcs-nav__mega-link--btn .ti {
  font-size: 1.1rem;
}

.lcs-nav__preview {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.lcs-nav__preview a {
  position: relative;
  display: block;
  aspect-ratio: 5/4;
  overflow: hidden;
  border: 1px solid rgba(26, 26, 26, 0.14);
  margin: 0;
  text-decoration: none;
}

.lcs-nav__preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.lcs-nav__preview span {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.45rem 0.5rem;
  background: linear-gradient(180deg, transparent 0%, rgba(26, 26, 26, 0.88) 68%);
  color: var(--cream);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.28;
  text-transform: uppercase;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

@media (hover: hover) {
  .lcs-nav__preview a:hover img {
    transform: scale(1.04);
    opacity: 0.95;
  }

  .lcs-nav__preview a:hover span {
    background: linear-gradient(180deg, transparent 0%, rgba(26, 26, 26, 0.94) 55%);
  }
}

.lcs-nav__mega-actions {
  display: flex;
  gap: 0;
  margin-top: 0.75rem;
}

.lcs-nav__mega-actions .btn {
  flex: 1;
  box-shadow: none;
  border-radius: 0;
  margin-left: -2px;
}

.lcs-nav__mega-actions .btn:first-child {
  margin-left: 0;
}

/* Chat docked to nav width */
.lcs-nav__chat {
  order: 1;
  display: flex;
  flex-direction: column;
  background: var(--cream);
  color: var(--black);
  border: 2px solid var(--black);
  box-shadow: 8px 8px 0 var(--black);
  min-height: var(--chat-panel-min-h, min(70vh, 520px));
  max-height: var(--chat-panel-max-h, min(86vh, 680px));
  overflow: hidden;
}

.lcs-nav__chat[hidden] {
  display: none !important;
  visibility: hidden;
  pointer-events: none;
}

.lcs-nav__chat .chatbot__messages {
  flex: 1 1 auto;
  min-height: var(--chat-messages-min-h, 7rem);
  max-height: none;
}

.lcs-nav.is-chat-open .lcs-nav__chat {
  display: flex;
}

.lcs-nav__chat .chatbot__header {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0.85rem;
  border-bottom: 2px solid var(--black);
}

.lcs-nav__chat .chatbot__messages {
  padding: 0.75rem;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 0;
}

.lcs-nav__chat .chat-msg--bot {
  background: var(--black);
  color: var(--cream);
  padding: 0.55rem 0.7rem;
  max-width: 92%;
  align-self: flex-start;
  font-size: 0.88rem;
}

.lcs-nav__chat .chat-msg--user {
  align-self: flex-end;
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: underline;
}


.lcs-nav__chat .chatbot__input {
  display: flex;
  border-top: 2px solid var(--black);
  flex-shrink: 0;
}

.lcs-nav__chat .chatbot__input .lcs-input {
  flex: 1;
  border: 0;
  background: transparent;
  min-height: 2.75rem;
}

.lcs-nav__chat .chatbot__input button {
  background: var(--black);
  color: var(--cream);
  border: 0;
  min-width: 2.75rem;
  transition: background 0.22s ease, color 0.22s ease;
}

.lcs-nav__chat .chatbot__input button:hover {
  background: var(--gray);
}

.lcs-nav.is-chat-open .lcs-nav__mega[hidden] {
  display: none;
}

/* Responsive breakpoints: nav-fixes.css */