/* ── NAV ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  margin: 0 auto;
  width: 100%;
  border-bottom: 1px solid transparent;
  transition: all .4s cubic-bezier(0.32, 0.08, 0.24, 1);
}

.site-header.scrolled:not(.open) {
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(20px);
  border-bottom-color: rgba(59,130,246,.10);
  box-shadow: 0 8px 40px rgba(10,14,39,.12);
  top: 16px;
  max-width: calc(100% - 48px);
  margin: 0 24px;
  border-radius: 12px;
  border: 1px solid rgba(59,130,246,.10);
}

.site-header.open {
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(20px);
}

.site-header nav {
  position: static;
  height: 70px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: none;
  border: none;
  background: transparent;
  backdrop-filter: none;
  transition: height .4s cubic-bezier(0.32, 0.08, 0.24, 1), padding .4s cubic-bezier(0.32, 0.08, 0.24, 1);
}

.site-header.scrolled nav { height: 52px; padding: 0 16px; }

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  transition: transform .3s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo:hover { transform: scale(1.05); }

.logo img {
  height: 6em;
  width: auto;
  filter: none;
  transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.scrolled .logo img { height: 4em; }

.logo-text {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--primary);
  white-space: nowrap;
  transition: font-size .3s cubic-bezier(0.32, 0.08, 0.24, 1);
}

.logo-text span { color: var(--blue-lt); }

.site-header.scrolled .logo-text { font-size: 13px; }

@media (max-width: 640px) {
  .logo-text { font-size: 12px; }
}

.logo-ig {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1.5px solid var(--line-h);
  color: var(--primary);
  flex-shrink: 0;
  margin-left: 2px;
  transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo-ig-icon {
  width: 15px; height: 15px;
}

.logo-ig:hover {
  border-color: transparent;
  color: #ffffff;
  background: linear-gradient(135deg, #405DE6 0%, #5B51D8 15%, #833AB4 30%, #C13584 45%, #E1306C 60%, #FD1D1D 75%, #F77737 88%, #FCAF45 100%);
  transform: translateY(-2px) scale(1.06);
  box-shadow: 0 6px 16px rgba(193,53,132,.35);
}

.site-header.scrolled .logo-ig { width: 26px; height: 26px; }
.site-header.scrolled .logo-ig-icon { width: 13px; height: 13px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  font-size: 12px;
  font-weight: bolder;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: black;
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 8px;
  transition: all .25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.nav-cta {
  padding: 10px 24px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
  color: #ffffff;
  text-decoration: none;
  border-radius: 50px;
  transition: all .4s cubic-bezier(0.32, 0.08, 0.24, 1);
  box-shadow: 0 8px 20px rgba(59,130,246,.25), inset 0 1px 1px rgba(255,255,255,.4);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.3);
  display: inline-flex;
  align-items: center;
}

.nav-cta::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
  transition: left .5s cubic-bezier(0.32, 0.08, 0.24, 1);
}

.nav-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(59,130,246,.35), inset 0 1px 1px rgba(255,255,255,.5); }
.nav-cta:hover::before { left: 100%; }

/* ── HAMBURGER ── */
.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: none;
  border: 1px solid rgba(59,130,246,.22);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  transition: all .3s ease;
}

.hamburger:hover { background: rgba(59,130,246,.08); }

.hamburger-icon { position: relative; width: 20px; height: 14px; }

.hamburger-icon span {
  display: block;
  position: absolute;
  left: 0;
  width: 100%; height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: center;
}

.hamburger-icon span:nth-child(1) { top: 0; }
.hamburger-icon span:nth-child(2) { top: 6px; }
.hamburger-icon span:nth-child(3) { top: 12px; }

.site-header.open .hamburger-icon span:nth-child(1) { top: 6px; transform: rotate(45deg); }
.site-header.open .hamburger-icon span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.site-header.open .hamburger-icon span:nth-child(3) { top: 6px; transform: rotate(-45deg); }

/* ── MOBILE OVERLAY ── */
.nav-mobile-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 99;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(20px);
  flex-direction: column;
  justify-content: space-between;
  padding: 100px 24px 40px;
  border-top: 1px solid var(--line);
  animation: fadeInDown 250ms cubic-bezier(0.32, 0.08, 0.24, 1) forwards;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.site-header.open ~ .nav-mobile-overlay { display: flex; }

.nav-mobile-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-mobile-links a {
  display: block;
  padding: 14px 12px;
  font-size: 15px;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
  border-radius: 10px;
  transition: all .2s ease;
}

.nav-mobile-links a:hover { background: rgba(59,130,246,.08); color: var(--blue); padding-left: 18px; }

.nav-mobile-cta { display: flex; flex-direction: column; gap: 14px; }

.nav-mobile-socials {
  display: flex;
  gap: 8px;
}

.nav-mobile-soc {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 8px;
  border-radius: 14px;
  border: 1px solid rgba(10,14,39,.12);
  background: #ffffff;
  color: var(--primary);
  text-decoration: none;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.nav-mobile-soc:hover { background: rgba(59,130,246,.08); border-color: var(--gold); transform: translateY(-2px); }
.nav-mobile-soc:active { transform: scale(0.96); }

.nav-mobile-cta .nav-cta { display: block; text-align: center; padding: 14px 24px; font-size: 12px; border-radius: 14px; }