.section-4 {
  padding: 42px 0 50px;
}

.section4-heading {
  text-align: center;
  margin-bottom: 28px;
}

.section4-title {
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  color: var(--text-color);
  position: relative;
  display: inline-block;
}

.section4-title::after {
  content: "";
  width: 55%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  display: block;
  margin: 10px auto 0;
  border-radius: 999px;
}

.section4-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.domain-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.08);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.domain-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.14);
  border-color: var(--primary-color);
}

.domain-main-image {
  position: relative;
  height: 310px;
  overflow: hidden;
}

.domain-main-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.65s ease, filter 0.65s ease;
}

.domain-card:hover .domain-main-image img {
  transform: scale(1.08);
  filter: brightness(0.82);
}

.domain-overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 20px 18px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.04));
}

.domain-overlay h3 {
  color: #fff;
  font-size: 1.2rem;
  margin: 0;
}

.domain-hidden-items {
  position: absolute;
  inset: 0;
  padding: 18px;
  display: grid;
  grid-template-columns: 1fr;
  align-content: center;
  gap: 12px;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.42));
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.domain-card:hover .domain-hidden-items {
  opacity: 1;
  visibility: visible;
}

.mini-item {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 12px;
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 16px;
  padding: 8px;
  transform: translateY(16px) scale(0.96);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease, background 0.3s ease;
  backdrop-filter: blur(8px);
}

.domain-card:hover .mini-item {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.domain-card:hover .mini-item:nth-child(1) {
  transition-delay: 0.08s;
}

.domain-card:hover .mini-item:nth-child(2) {
  transition-delay: 0.16s;
}

.domain-card:hover .mini-item:nth-child(3) {
  transition-delay: 0.24s;
}

.mini-item:hover {
  background: rgba(255, 255, 255, 0.18);
}

.mini-item img {
  width: 70px;
  height: 56px;
  object-fit: cover;
  border-radius: 12px;
  display: block;
}

.mini-item span {
  color: #fff;
  font-weight: 600;
  line-height: 1.35;
}

body.theme-dark .domain-card,
body.theme-brown .domain-card {
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.24);
}

@media (max-width: 1100px) {
  .section4-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section-4 {
    padding: 34px 0 42px;
  }

  .section4-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .domain-main-image {
    height: 270px;
  }

  .mini-item {
    grid-template-columns: 62px 1fr;
  }

  .mini-item img {
    width: 62px;
    height: 50px;
  }
}