/* =========================================================
   Header / Navigation
   ========================================================= */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  line-height: 0;
}

.logo img {
  width: auto;
  height: 26px;
  display: block;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links > li {
  position: relative;
}

.nav-links a.nav-link {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--body);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
  white-space: nowrap;
  transition: color 0.15s ease;
}

.nav-links a.nav-link:hover {
  color: var(--ink);
}

.nav-caret {
  width: 9px;
  height: 9px;
  flex-shrink: 0;
  transition: transform 0.18s ease;
}

.nav-dropdown:hover .nav-caret {
  transform: rotate(180deg);
}

/* Dropdown panel */
.nav-dropdown-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  width: min(640px, calc(100vw - 48px));
  background: #fff;
  border: 1px solid rgba(3, 2, 36, 0.08);
  border-radius: var(--r-lg);
  box-shadow: 0 16px 42px rgba(3, 2, 36, 0.12), 0 2px 8px rgba(3, 2, 36, 0.04);
  padding: 16px;
  display: grid;
  grid-template-columns: minmax(190px, 0.85fr) minmax(260px, 1.15fr);
  gap: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.16s ease, transform 0.16s ease;
  z-index: 50;
}

.nav-dropdown-panel::before {
  content: '';
  position: absolute;
  top: -14px;
  left: 0;
  right: 0;
  height: 14px;
}

.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-group {
  min-width: 0;
}

.nav-dropdown-group + .nav-dropdown-group {
  border-left: 1px solid var(--line);
  padding-left: 16px;
  margin-left: 16px;
}

.nav-dropdown-label {
  display: block;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 9px;
  padding: 0 8px;
}

.nav-dropdown-panel a {
  display: block;
  padding: 8px;
  border-radius: var(--r-sm);
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--body);
  text-decoration: none;
  transition: background 0.13s ease, color 0.13s ease, transform 0.13s ease;
}

.nav-dropdown-panel a:hover {
  background: var(--brand-tint);
  color: var(--brand);
  transform: translateX(1px);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.nav-right .btn,
.mobile-menu-ctas .btn {
  border-radius: 10px;
}

.nav-right .nav-sep {
  width: 1px;
  height: 20px;
  background: var(--line-strong);
}

.nav-demo-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--body);
  text-decoration: none;
  white-space: nowrap;
}

.nav-demo-link:hover {
  color: var(--ink);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  z-index: 210;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-hamburger.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-hamburger.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 199;
  padding: 8px 24px 32px;
  overflow-y: auto;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.mobile-menu.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu a.m-link {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
}

.mobile-dropdown summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

.mobile-dropdown summary::-webkit-details-marker {
  display: none;
}

.mobile-dropdown summary::after {
  content: '';
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--faint);
  border-bottom: 1.5px solid var(--faint);
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.mobile-dropdown[open] summary::after {
  transform: rotate(-135deg);
}

.mobile-subnav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 6px 2px 14px 14px;
  border-left: 2px solid var(--line);
  margin-left: 4px;
}

.mobile-subnav-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  padding: 10px 0 4px;
}

.mobile-subnav a {
  font-size: 0.88rem;
  color: var(--body);
  text-decoration: none;
  padding: 7px 0;
}

.mobile-menu-ctas {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.mobile-menu-ctas .btn {
  width: 100%;
}

@media (max-width: 980px) {
  .nav-links,
  .nav-right {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }
  .mobile-menu {
    display: block;
  }
}