.site-header {
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 9999;
  background: linear-gradient(135deg, #041b3d 0%, #0b2f6b 48%, #1565ff 100%);
  border-bottom: 1px solid rgba(73, 184, 255, 0.18);
  box-shadow:
    0 18px 45px rgba(0, 0, 0, 0.45),
    inset 0 -1px rgba(255, 255, 255, 0.08);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #49b8ff, transparent);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

/* LOGO */
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, #49b8ff, #1565ff);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  box-shadow:
    0 12px 32px rgba(21, 101, 255, 0.45),
    inset 0 1px rgba(255, 255, 255, 0.35);
}

.logo-text {
  font-size: 28px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.8px;
}

/* MENU */
.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.nav-menu a {
  color: #dbeafe;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  position: relative;
  transition: 0.3s ease;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -11px;
  width: 0;
  height: 2px;
  border-radius: 99px;
  background: #49b8ff;
  box-shadow: 0 0 12px rgba(73, 184, 255, 0.8);
  transition: 0.3s ease;
}

.nav-menu a:hover {
  color: #49b8ff;
}

.nav-menu a:hover::after {
  width: 100%;
}

/* CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  transition: 0.3s ease;
  white-space: nowrap;
}

.btn-daftar {
  color: #ffffff;
  background: linear-gradient(135deg, #49b8ff, #1565ff);
  box-shadow: 0 12px 30px rgba(21, 101, 255, 0.45);
}

.btn-daftar:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 42px rgba(73, 184, 255, 0.45);
}

.btn-login {
  color: #ffffff;
  border: 1px solid rgba(73, 184, 255, 0.5);
  background: rgba(255, 255, 255, 0.06);
}

.btn-login:hover {
  background: #1565ff;
  border-color: #1565ff;
  transform: translateY(-3px);
}

/* MOBILE DEFAULT */
.burger,
.close-menu,
.mobile-cta {
  display: none;
}

/* TABLET */
@media (max-width: 1024px) {
  .nav-menu {
    gap: 22px;
  }

  .nav-menu a {
    font-size: 14px;
  }

  .btn {
    padding: 11px 20px;
  }
}

/* MOBILE */
@media (max-width: 900px) {
  .header-container {
    padding: 15px 20px;
  }

  .logo-icon {
    width: 46px;
    height: 46px;
    font-size: 21px;
  }

  .logo-text {
    font-size: 24px;
  }

  .header-cta {
    display: none;
  }

  .burger {
    width: 44px;
    height: 44px;
    border: 1px solid rgba(73, 184, 255, 0.28);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
  }

  .burger span {
    width: 24px;
    height: 3px;
    background: #ffffff;
    border-radius: 999px;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 84%;
    max-width: 360px;
    height: 100vh;
    padding: 88px 28px 32px;
    background:
      radial-gradient(circle at top right, rgba(73, 184, 255, 0.22), transparent 38%),
      linear-gradient(180deg, #041b3d 0%, #08285c 55%, #0b2f6b 100%);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 24px;
    transition: 0.35s ease;
    box-shadow: -18px 0 50px rgba(0, 0, 0, 0.55);
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu a {
    width: 100%;
    font-size: 17px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(73, 184, 255, 0.12);
  }

  .nav-menu a::after {
    display: none;
  }

  .close-menu {
    display: block;
    position: absolute;
    top: 20px;
    right: 24px;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(73, 184, 255, 0.28);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.06);
    color: #ffffff;
    font-size: 34px;
    line-height: 38px;
    cursor: pointer;
  }

  .mobile-cta {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 13px;
    margin-top: 10px;
  }

  .mobile-cta .btn {
    width: 100%;
    padding: 15px 20px;
  }
}

/* SMALL MOBILE */
@media (max-width: 480px) {
  .header-container {
    padding: 14px 16px;
  }

  .logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
  }

  .logo-text {
    font-size: 22px;
  }

  .nav-menu {
    width: 88%;
  }
}