:root {
  --primary-color: #667eea;
  --primary-dark: #764ba2;
  --text-color: #333;
  --text-light: #666;
  --border-color: #e5e5e5;
  --bg-light: #f5f5f5;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
}

body.ui-style-7 {
  font-size: 16px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  cursor: pointer;
  transition: transform 0.3s;
}

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

.card {
  transition: box-shadow 0.3s;
}

.card:hover {
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.card h1 {
  color: var(--primary-color);
  font-size: 28px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--primary-color);
}

.card h2 {
  font-size: 22px;
  margin-top: 30px;
}

.card-item a {
  color: var(--text-color);
  transition: color 0.3s;
}

.card-item a:hover {
  color: var(--primary-color);
}

.info-item {
  transition: background 0.3s;
}

.info-item:hover {
  background: #f9f9f9;
}

.summary {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 6px;
  border-left: 4px solid var(--primary-color);
  margin: 15px 0;
}

button, .btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s;
}

button:hover, .btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

@media (max-width: 768px) {
  body.ui-style-7 {
    font-size: 14px;
  }

  .card h1 {
    font-size: 22px;
  }

  .card h2 {
    font-size: 18px;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeIn 0.5s ease-out;
}

.card-item {
  animation: fadeIn 0.6s ease-out;
}

.footer {
  font-size: 14px;
  opacity: 0.9;
}

.footer:hover {
  opacity: 1;
}