/* ============================================================
   NAVBAR COMPONENT
   ============================================================ */

.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-sticky);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: height var(--dur-normal) var(--ease-out),
              background var(--dur-normal) var(--ease-out),
              box-shadow var(--dur-normal) var(--ease-out);
}

.navbar.is-scrolled,
.navbar.is-solid {
  height: var(--nav-h-scroll);
  background: rgba(10, 22, 40, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-wrap {
  width: 100%;
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: 0 var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}
.nav-logo img {
  height: 42px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
  transition: transform var(--dur-normal) var(--ease-spring),
              filter var(--dur-normal) var(--ease-out);
}
.nav-logo:hover img {
  transform: scale(1.04);
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.25));
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex: 1;
  justify-content: center;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: var(--sp-2) var(--sp-3);
  color: rgba(255,255,255,0.8);
  font-size: var(--sz-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.01em;
  text-decoration: none;
  border-radius: var(--r-md);
  transition: all var(--dur-fast) var(--ease-out);
  white-space: nowrap;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: var(--sp-3);
  right: var(--sp-3);
  height: 2px;
  background: var(--c-accent);
  border-radius: var(--r-full);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-normal) var(--ease-out);
}
.nav-link:hover,
.nav-link.is-active {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.nav-link:hover::after,
.nav-link.is-active::after { transform: scaleX(1); }

.nav-link .nav-arrow {
  font-size: 0.65em;
  opacity: 0.7;
  transition: transform var(--dur-fast) var(--ease-out);
}
.nav-item:hover .nav-arrow { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 230px;
  background: rgba(10, 22, 40, 0.98);
  border-radius: var(--r-xl);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.1);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all var(--dur-normal) var(--ease-out);
  overflow: hidden;
  z-index: var(--z-drop);
  padding-top: 8px; /* visual gap between link and panel */
  border: 1px solid rgba(255,255,255,0.12);
}
/* Transparent bridge: keeps hover alive while mouse crosses the gap */
.nav-item:has(.nav-dropdown)::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: -8px;
  right: -8px;
  height: 10px;
  background: transparent;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
/* Inner visual card offsets the padding-top */
.nav-dropdown .drop-head,
.nav-dropdown .drop-item {
  /* no change needed — padding-top on parent creates the gap */
}

.drop-head {
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--sz-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.drop-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  color: rgba(255,255,255,0.85);
  font-size: var(--sz-sm);
  font-weight: var(--fw-medium);
  text-decoration: none;
  transition: all var(--dur-fast) var(--ease-out);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.drop-item:last-child { border-bottom: none; }
.drop-item:hover {
  background: rgba(255,255,255,0.9);
  color: #0A1628;
  padding-left: var(--sp-6);
}

.drop-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8em;
  flex-shrink: 0;
  transition: transform var(--dur-fast);
}
.drop-item:hover .drop-icon { transform: scale(1.12); }
.drop-icon.solvent  { background: var(--c-solvent-lt);  color: var(--c-solvent); }
.drop-icon.uv       { background: var(--c-uv-lt);       color: var(--c-uv); }
.drop-icon.pad      { background: var(--c-pad-lt);       color: var(--c-pad); }
.drop-icon.additive { background: var(--c-additive-lt);  color: var(--c-additive); }
.drop-icon.thinner  { background: var(--c-thinner-lt);   color: var(--c-thinner); }

/* Wide mega dropdown for 10 categories */
.nav-dropdown-wide {
  min-width: 520px;
  left: 50%;
  transform: translateX(-60%) translateY(-6px);
}
.nav-item:hover .nav-dropdown-wide {
  transform: translateX(-60%) translateY(0);
}
.drop-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: var(--sp-2);
  gap: 2px;
}
.drop-grid .drop-item {
  border-bottom: none;
  border-radius: var(--r-lg);
  padding: var(--sp-2) var(--sp-3);
}
.drop-grid .drop-item:hover {
  padding-left: var(--sp-3);
  background: var(--c-surface-2);
}
.drop-view-all {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--sz-xs);
  font-weight: var(--fw-semibold);
  color: #00C9E0;
  text-decoration: none;
  border-top: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.08);
  transition: background var(--dur-fast);
}
.drop-view-all:hover { background: rgba(255,255,255,0.15); color: white; }

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

.nav-search-inline {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-search-inline .search-box-icon {
  position: absolute;
  left: var(--sp-3);
  color: rgba(255,255,255,0.5);
  font-size: var(--sz-sm);
  pointer-events: none;
}
.nav-search-input {
  width: 200px;
  height: 36px;
  padding: 0 var(--sp-3) 0 var(--sp-8);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--r-full);
  background: rgba(255,255,255,0.08);
  color: white;
  font-size: var(--sz-sm);
  font-family: var(--f-primary);
  transition: all var(--dur-fast);
  outline: none;
}
.nav-search-input::placeholder {
  color: rgba(255,255,255,0.4);
}
.nav-search-input:focus {
  width: 280px;
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.3);
}
/* Hide search button completely - only show inline search */
.nav-search-btn {
  display: none !important;
}

/* Mobile: hide inline search */
@media (max-width: 1024px) {
  .nav-search-inline { display: none; }
}

.lang-switcher {
  display: flex;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--r-md);
  overflow: hidden;
}
.lang-btn {
  padding: 5px 9px;
  font-size: 11px;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: all var(--dur-fast);
}
.lang-btn:hover,
.lang-btn.is-active {
  background: rgba(255,255,255,0.14);
  color: white;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-5);
  background: var(--c-accent);
  color: var(--c-primary);
  font-size: var(--sz-sm);
  font-weight: var(--fw-bold);
  border-radius: var(--r-full);
  text-decoration: none;
  transition: all var(--dur-normal) var(--ease-out);
  box-shadow: 0 0 20px rgba(0,201,224,0.3);
}
.nav-cta:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(0,201,224,0.4);
  color: var(--c-primary);
}

/* Hamburger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
  cursor: pointer;
}
.nav-burger span {
  display: block;
  height: 2px;
  background: white;
  border-radius: var(--r-full);
  transition: all var(--dur-normal) var(--ease-out);
}
.nav-burger span:nth-child(2) { width: 75%; }
.nav-burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- MOBILE MENU ---- */
.mobile-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-over) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--dur-normal) var(--ease-out);
}
.mobile-backdrop.is-open { opacity: 1; visibility: visible; }

.mobile-menu {
  position: fixed;
  top: 0; right: -100%; bottom: 0;
  width: min(320px, 82vw);
  background: var(--c-primary);
  z-index: var(--z-over);
  display: flex;
  flex-direction: column;
  transition: right var(--dur-slow) var(--ease-out);
  overflow-y: auto;
  box-shadow: -12px 0 50px rgba(0,0,0,0.5);
}
.mobile-menu.is-open { right: 0; }

.mm-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-5) var(--sp-6);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.mm-head img { height: 34px; }

.mm-close {
  width: 34px;
  height: 34px;
  border-radius: var(--r-full);
  background: rgba(255,255,255,0.08);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: var(--sz-lg);
  border: none;
  transition: background var(--dur-fast);
}
.mm-close:hover { background: rgba(255,255,255,0.16); }

.mm-nav {
  flex: 1;
  padding: var(--sp-4) var(--sp-6);
}
.mm-item { border-bottom: 1px solid rgba(255,255,255,0.05); }

.mm-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) 0;
  color: rgba(255,255,255,0.8);
  font-size: var(--sz-base);
  font-weight: var(--fw-medium);
  text-decoration: none;
  transition: color var(--dur-fast);
}
.mm-link:hover,
.mm-link.is-active { color: var(--c-accent); }
.mm-link i { font-size: var(--sz-xs); opacity: 0.6; transition: transform var(--dur-fast); }
.mm-link.is-expanded i { transform: rotate(180deg); }

.mm-sub {
  display: none;
  padding: var(--sp-2) 0 var(--sp-4);
}
.mm-sub.is-open { display: block; }

.mm-sub-link {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  color: rgba(255,255,255,0.6);
  font-size: var(--sz-sm);
  text-decoration: none;
  border-radius: var(--r-md);
  transition: all var(--dur-fast);
}
.mm-sub-link:hover {
  background: rgba(255,255,255,0.07);
  color: white;
}

.mm-foot {
  padding: var(--sp-5) var(--sp-6);
  border-top: 1px solid rgba(255,255,255,0.07);
}
.mm-langs {
  display: flex;
  justify-content: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}
.mm-lang {
  padding: var(--sp-1) var(--sp-3);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--r-md);
  color: rgba(255,255,255,0.5);
  font-size: var(--sz-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.05em;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--dur-fast);
}
.mm-lang:hover,
.mm-lang.is-active {
  background: rgba(255,255,255,0.12);
  color: white;
  border-color: rgba(255,255,255,0.3);
}

/* ---- SEARCH OVERLAY ---- */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(10, 22, 40, 0.98);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: all var(--dur-normal) var(--ease-out);
}
.search-overlay.is-open { opacity: 1; visibility: visible; }

.search-wrap {
  width: 100%;
  max-width: 680px;
  padding: 0 var(--sp-6);
}

.search-box {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--r-2xl);
  padding: var(--sp-2) var(--sp-4);
  transition: border-color var(--dur-fast);
}
.search-box:focus-within {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(0,201,224,0.12);
}
.search-box-icon { color: rgba(255,255,255,0.4); font-size: var(--sz-xl); }

.search-input {
  flex: 1;
  padding: var(--sp-3) 0;
  background: none;
  border: none;
  color: white;
  font-size: var(--sz-2xl);
  font-family: var(--f-primary);
  outline: none;
}
.search-input::placeholder { color: rgba(255,255,255,0.25); }

.search-close-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-full);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.6);
  cursor: pointer;
  transition: all var(--dur-fast);
  font-size: var(--sz-lg);
  flex-shrink: 0;
}
.search-close-btn:hover { background: rgba(255,255,255,0.16); color: white; }

.search-results {
  margin-top: var(--sp-4);
  border-radius: var(--r-xl);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  overflow: hidden;
  max-height: 55vh;
  overflow-y: auto;
}

.sr-item {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: all var(--dur-fast);
}
.sr-item:last-child { border-bottom: none; }
.sr-item:hover { background: rgba(255,255,255,0.07); color: white; }

.sr-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--sz-sm);
}

.sr-info { flex: 1; }
.sr-name { font-size: var(--sz-sm); font-weight: var(--fw-medium); color: inherit; }
.sr-cat  { font-size: var(--sz-xs); color: rgba(255,255,255,0.45); margin-top: 1px; }

.sr-empty,
.search-hint {
  text-align: center;
  color: rgba(255,255,255,0.35);
  font-size: var(--sz-sm);
  padding: var(--sp-5);
}
.search-hint { padding: var(--sp-4) 0 0; }
.search-hint kbd { color: rgba(255,255,255,0.4); border-color: rgba(255,255,255,0.15); background: rgba(255,255,255,0.06); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .nav-menu,
  .lang-switcher,
  .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .nav-wrap { gap: var(--sp-4); }
}

@media (max-width: 640px) {
  .nav-wrap { padding: 0 var(--sp-4); }
  .nav-logo img { height: 34px; }
  .search-input { font-size: var(--sz-xl); }
}