@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700&display=swap');

:root {
  --primary-red: #C8102E; /* UK Red */
  --primary-blue: #012169; /* UK Blue */
  --white: #FFFFFF;
  --bg-color: #F4F7F6;
  --text-color: #333;
  --card-bg: #FFFFFF;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Noto Sans KR', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

.header {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #000 100%);
  color: white;
  text-align: center;
  padding: 3rem 1rem;
  margin-bottom: 2rem;
  border-bottom: 5px solid var(--primary-red);
}

.header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.back-link {
  display: inline-block;
  margin-top: 1.5rem;
  color: #ddd;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.back-link:hover {
  color: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.card {
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.card-content {
  padding: 1.5rem;
  flex-grow: 1;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--primary-blue);
}

.card-summary {
  font-size: 0.9rem;
  color: #666;
}

/* Modal Styling */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.6);
  align-items: center;
  justify-content: center;
}

.modal-content {
  background-color: var(--white);
  padding: 2.5rem;
  border-radius: 15px;
  max-width: 600px;
  width: 90%;
  position: relative;
  text-align: center;
  box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 2rem;
  cursor: pointer;
  color: #aaa;
}

.close-btn:hover {
  color: var(--text-color);
}

#modal-title {
  color: var(--primary-red);
  margin-bottom: 1.5rem;
}

#modal-description {
  text-align: left;
  line-height: 1.8;
}

@media (max-width: 768px) {
  .header h1 {
    font-size: 1.8rem;
  }
}