.main-nav .menu { position: relative; }
.main-nav .menu .menu-item-has-children { position: relative; }
.main-nav .menu .sub-menu {
  display: none;
  list-style: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: #fff;
  border: 1px solid var(--border);
  padding: 8px;
  margin: 0;
  z-index: 20;
}
.main-nav .menu .menu-item-has-children:hover > .sub-menu { display: block; }
.main-nav .menu .sub-menu a { text-transform: none; font-size: 13px; display: block; padding: 8px; }

@media (max-width: 768px) {
  .main-nav .menu .sub-menu {
    position: static;
    display: block;
    border: 0;
    padding-left: 14px;
  }
}

.static-home-hero .hero-slide { position: relative; opacity: 1; }
.static-home-hero .hero-slide-bg { min-height: 500px; }
.static-cards .card-title { min-height: 48px; }
.static-logo-grid .card { text-align: center; }
.static-logo-grid .card-body { font-weight: 700; color: var(--muted); }

@media (max-width: 768px) {
  .static-home-hero .hero-slide-bg { min-height: 380px; }
}

.floating-social {
  position: fixed;
  right: 20px;
  top: 55%;
  transform: translateY(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.floating-social .social-item {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.floating-social .social-item img {
  width: 60%;
  height: 60%;
  object-fit: contain;
  display: block;
}

.floating-social .messenger { background: #1877f2; }
.floating-social .zalo { background: #1da1f2; }
.floating-social .phone {
  background: #4CAF50;
  animation: pulse-phone 2s infinite;
}

.floating-social .social-item:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 6px 16px rgba(0,0,0,0.25);
}

@keyframes pulse-phone {
  0% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.6); }
  70% { box-shadow: 0 0 0 12px rgba(76, 175, 80, 0); }
  100% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0); }
}

@media (max-width: 768px) {
  .floating-social {
    right: 12px;
    gap: 10px;
  }

  .floating-social .social-item {
    width: 46px;
    height: 46px;
  }
}