/* Hero */
.hero {
  background: url("https://picsum.photos/1600/700?tech") center/cover no-repeat;
  position: relative;
  color: #fff;
  padding: 6rem 1rem;
  text-align: center;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.3));
}
.hero .hero-container { position: relative; z-index: 1; }
.hero h1 { font-size: 3rem; font-weight: bold; margin-bottom: 1rem; }
.hero p { font-size: 1.2rem; margin-bottom: 2rem; }
.hero .btn {
  background: var(--accent-color);
  color: #000;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  font-size: 1.1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
}
.hero .btn:hover {
  background: #e0a800;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}


/* Clickable Cards */
.ia-items {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -10px;
}
.ia-item {
  flex: 1 1 300px;
  margin: 10px;
  display: block;
  background-color: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease, color 0.2s ease;
  text-decoration: none;
  color: inherit;
}
.ia-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.15);
  color: var(--primary-color);
}
.ia-item-event-img {
  background-size: cover;
  background-position: center;
  height: 160px;
}
.ia-item-event-desc { padding: 20px; }
.ia-item-event-desc h4 { margin: 0 0 0.5rem; font-size: 1.2rem; }
.ia-item-event-desc p { margin: 0; font-size: 0.95rem; }

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .ia-item { flex: 1 1 100%; }
  .radio-group { flex-direction: column; gap: 0.5rem; }
}