/* =========================================================
   NAVIGATION BAR — with motion (fixed mobile)
   ========================================================= */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--site-nav-bg, var(--white));
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 3px rgba(21, 43, 69, 0.04);

  transition:
    background 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.4s cubic-bezier(0.4, 0, 0.2, 1),
    backdrop-filter 0.4s ease;

  /* Entrance — FADE ONLY (no transform → no containing-block bug) */
  animation: navFadeIn 0.4s ease both;
}

/* ⚠️  Do NOT put `transform` in this keyframe's "to" state.
       Doing so makes .site-nav a containing block for
       position:fixed descendants → mobile menu disappears.
       Any future slide-in effect should use clip-path or a wrapper. */
@keyframes navFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.site-nav.is-scrolled {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom-color: rgba(227, 233, 238, 0.4);
  box-shadow: 0 6px 24px rgba(21, 43, 69, 0.08);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: 1180px;
  height: 72px;
  padding: 0 24px;
  margin: 0 auto;
  transition: height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-nav.is-scrolled .site-nav__inner { height: 60px; }

.site-nav--full_width .site-nav__inner {
  max-width: none;
  padding: 0 32px;
}

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--navy);
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity 0.15s, transform 0.25s;
}
.site-nav__brand:hover { transform: translateY(-1px); }

.site-nav__logo {
  height: 40px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.site-nav__brand:hover .site-nav__logo { transform: scale(1.06); }

.site-nav__mark {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  color: #fff;
  border-radius: 50%;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.4s;
}
.site-nav__brand:hover .site-nav__mark {
  transform: rotate(360deg) scale(1.06);
  box-shadow: 0 0 22px rgba(244, 131, 31, 0.45);
}

.site-nav__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--navy);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 260px;
}

.site-nav__menu {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}

.site-nav__item {
  position: relative;
  animation: navItemIn 0.45s cubic-bezier(0.34, 1.3, 0.64, 1) both;
}
.site-nav__item:nth-child(1) { animation-delay: 0.15s; }
.site-nav__item:nth-child(2) { animation-delay: 0.21s; }
.site-nav__item:nth-child(3) { animation-delay: 0.27s; }
.site-nav__item:nth-child(4) { animation-delay: 0.33s; }
.site-nav__item:nth-child(5) { animation-delay: 0.39s; }
.site-nav__item:nth-child(6) { animation-delay: 0.45s; }
.site-nav__item:nth-child(7) { animation-delay: 0.51s; }
.site-nav__item:nth-child(8) { animation-delay: 0.57s; }

@keyframes navItemIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.site-nav__item > a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  border-radius: 6px;
  white-space: nowrap;
  overflow: hidden;
  isolation: isolate;
  --glow-x: 50%;
  --glow-y: 50%;
  transition:
    color 0.25s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.site-nav__item > a:hover { color: var(--blue-dark); }
.site-nav__item > a:active { transform: scale(0.97); }

.site-nav__item > a::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 5px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--orange));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.site-nav__item > a:hover::after,
.site-nav__item.is-active > a::after {
  transform: scaleX(1);
}

.site-nav__item > a::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
    180px circle at var(--glow-x) var(--glow-y),
    rgba(21, 159, 218, 0.14),
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}
.site-nav__item > a:hover::before { opacity: 1; }

.site-nav__icon {
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.site-nav__item > a:hover .site-nav__icon {
  transform: scale(1.15) rotate(-6deg);
}

.site-nav__caret {
  font-size: 10px;
  line-height: 1;
  color: var(--gray);
  transition:
    transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    color 0.2s;
}
.site-nav__item.has-dropdown:hover .site-nav__caret {
  transform: rotate(180deg);
  color: var(--orange);
}

.site-nav__item.is-active > a {
  background: linear-gradient(135deg, var(--blue-tint), rgba(244, 131, 31, 0.09));
  color: var(--blue-dark);
  box-shadow: 0 2px 12px rgba(21, 159, 218, 0.12);
}

.site-nav__item.is-active .site-nav__label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--orange);
  vertical-align: middle;
  animation: dotPulse 2.2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { transform: scale(1);    box-shadow: 0 0 0 0 rgba(244, 131, 31, 0.45); }
  50%      { transform: scale(1.15); box-shadow: 0 0 0 6px rgba(244, 131, 31, 0); }
}

.site-nav__dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 230px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 16px 40px rgba(21, 43, 69, 0.12);
  z-index: 20;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px) scale(0.96);
  transform-origin: top left;
  transition:
    opacity 0.2s ease,
    transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
    visibility 0.3s;
}

.site-nav__dropdown::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 22px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid var(--line);
  border-top: 1px solid var(--line);
  transform: rotate(45deg);
  border-radius: 2px 0 0 0;
}

.site-nav__item.has-dropdown:hover .site-nav__dropdown,
.site-nav__item.has-dropdown:focus-within .site-nav__dropdown,
.site-nav__item.has-dropdown.is-open .site-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.site-nav__dropdown li {
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.22s, transform 0.22s;
}
.site-nav__item.has-dropdown:hover .site-nav__dropdown li,
.site-nav__item.has-dropdown.is-open .site-nav__dropdown li {
  opacity: 1;
  transform: translateX(0);
}
.site-nav__item.has-dropdown:hover .site-nav__dropdown li:nth-child(1) { transition-delay: 0.04s; }
.site-nav__item.has-dropdown:hover .site-nav__dropdown li:nth-child(2) { transition-delay: 0.07s; }
.site-nav__item.has-dropdown:hover .site-nav__dropdown li:nth-child(3) { transition-delay: 0.10s; }
.site-nav__item.has-dropdown:hover .site-nav__dropdown li:nth-child(4) { transition-delay: 0.13s; }
.site-nav__item.has-dropdown:hover .site-nav__dropdown li:nth-child(5) { transition-delay: 0.16s; }
.site-nav__item.has-dropdown:hover .site-nav__dropdown li:nth-child(6) { transition-delay: 0.19s; }

.site-nav__dropdown a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  border-radius: 6px;
  transition: background 0.15s, color 0.15s, padding-left 0.2s;
}
.site-nav__dropdown a:hover {
  background: var(--blue-tint);
  color: var(--blue-dark);
  padding-left: 16px;
}

.site-nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  margin-left: auto;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}
.site-nav__burger:hover { background: var(--blue-tint); }

.site-nav__burger span {
  display: block;
  width: 22px;
  height: 2.5px;
  background: var(--navy);
  border-radius: 2px;
  transform-origin: center;
  transition:
    transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.2s,
    width 0.25s;
}
.site-nav__burger.is-open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.site-nav__burger.is-open span:nth-child(2) { opacity: 0; width: 0; }
.site-nav__burger.is-open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* =========================================================
   MOBILE — keyframe declared at top level
   ========================================================= */
@keyframes mobileItemIn {
  from { opacity: 0; transform: translateX(-14px); }
  to   { opacity: 1; transform: translateX(0); }
}

@media (max-width: 900px) {
  .site-nav__inner { height: 64px; padding: 0 16px; }
  .site-nav.is-scrolled .site-nav__inner { height: 56px; }

  .site-nav__logo  { height: 34px; }
  .site-nav__mark  { width: 34px; height: 34px; font-size: 14px; }
  .site-nav__name  { font-size: 14px; max-width: 180px; }
  .site-nav__burger { display: flex; }

  /* Fixed menu — no visibility, only opacity + pointer-events */
  .site-nav__menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    margin: 0;
    background: #fff;
    border-top: 1px solid var(--line);
    overflow-y: auto;

    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity 0.25s, transform 0.25s;
  }

  .site-nav.is-scrolled .site-nav__menu { top: 56px; }

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

  /* Stagger items when menu opens */
  .site-nav__menu.is-open .site-nav__item {
    animation: mobileItemIn 0.35s cubic-bezier(0.34, 1.3, 0.64, 1) both;
  }
  .site-nav__menu.is-open .site-nav__item:nth-child(1) { animation-delay: 0.05s; }
  .site-nav__menu.is-open .site-nav__item:nth-child(2) { animation-delay: 0.10s; }
  .site-nav__menu.is-open .site-nav__item:nth-child(3) { animation-delay: 0.15s; }
  .site-nav__menu.is-open .site-nav__item:nth-child(4) { animation-delay: 0.20s; }
  .site-nav__menu.is-open .site-nav__item:nth-child(5) { animation-delay: 0.25s; }
  .site-nav__menu.is-open .site-nav__item:nth-child(6) { animation-delay: 0.30s; }
  .site-nav__menu.is-open .site-nav__item:nth-child(7) { animation-delay: 0.35s; }
  .site-nav__menu.is-open .site-nav__item:nth-child(8) { animation-delay: 0.40s; }

  .site-nav__item { width: 100%; }
  .site-nav__item > a {
    display: flex;
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    background: #FBFCFD;
    border-radius: var(--radius-sm);
  }
  .site-nav__item > a::after { display: none; }
  .site-nav__item > a::before { display: none; }

  .site-nav__item.has-dropdown > a .site-nav__caret { margin-left: auto; }

  .site-nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 4px 0 4px 20px;
    display: none;
  }
  .site-nav__dropdown::before { display: none; }
  .site-nav__item.has-dropdown.is-open .site-nav__dropdown { display: block; }
  .site-nav__item.has-dropdown.is-open .site-nav__dropdown li {
    opacity: 1;
    transform: none;
  }

  .site-nav__dropdown a { padding: 10px 14px; font-size: 14px; }
}

@media (max-width: 480px) {
  .site-nav__name { max-width: 130px; }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav,
  .site-nav *,
  .site-nav *::before,
  .site-nav *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}