@charset "utf-8";

* { font-family: 'Bai Jamjuree', sans-serif; }

/* Banner */
.header-parallax {
    height: 40vh;
    background-size: cover; background-position: center; background-attachment: fixed;
    display: flex; justify-content: center; align-items: center; text-align: center;
    position: relative; margin-bottom: 40px;
}
.header-parallax::before {
    content: ''; position: absolute; top:0; left:0; width:100%; height:100%;
    background: rgba(0,0,0,0.6);
}
.header-con { 
    position: relative; z-index: 1; color: #fff; padding: 30px 50px;
    background: rgba(0, 0, 0, 0.5); backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 215, 0, 0.5); border-radius: 10px; 
}
.header-con h1 { font-size: 2rem; font-weight: 700; margin-bottom: 10px; color: #FFD700; }
.header-con p { font-size: 1.1rem; color: #ddd; margin: 0; letter-spacing: 1px; }

/* Card Section */
.oit-section { margin-bottom: 40px; }
.section-title { color: #5A0000; font-weight: 800; text-transform: uppercase; letter-spacing: 1px; }

.oit-card {
    background: #fff; border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden; border: 1px solid rgba(0,0,0,0.05);
}
.card-header-badge {
    background: linear-gradient(135deg, #5A0000, #3a0000);
    padding: 15px 30px; border-bottom: 4px solid #FFD700;
}
.card-header-badge h3, .card-header-badge h4 { 
    margin: 0; color: #fff; font-size: 1.3rem; font-weight: 700; 
}
.card-body-content { padding: 30px; }

/* List Group (Links) */
.list-group-item {
    border: none; border-bottom: 1px solid #f0f0f0; padding: 15px 10px;
    font-size: 1rem; color: #444; transition: all 0.2s;
}
.list-group-item:last-child { border-bottom: none; }
.list-group-item:hover {
    background-color: #fffbf0; color: #5A0000; padding-left: 20px; font-weight: 500;
}
.list-group-item i { margin-right: 10px; color: #5A0000; }

.scrollable-list {
    max-height: 500px; overflow-y: auto; /* ถ้าลิสต์ยาวมากให้เลื่อนได้ */
}

/* Images & Gallery */
.responsive-img { width: 100%; height: auto; border-radius: 8px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }

.gallery-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}
.gallery-img {
    width: 100%; height: auto; border-radius: 8px; 
    transition: transform 0.3s; box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.gallery-img:hover { transform: scale(1.03); z-index: 5; }

.text-red { color: #8B0000; font-weight: bold; border-left: 4px solid #FFD700; padding-left: 10px; margin-bottom: 15px; }

/* Button */
.btn-dl {
    display: inline-block; padding: 10px 20px; margin-bottom: 5px;
    border-radius: 50px; text-decoration: none; font-size: 0.9rem; font-weight: 600;
    transition: all 0.2s;
}
.pdf { background: #ffebee; color: #c62828; border: 1px solid #ffcdd2; }
.pdf:hover { background: #c62828; color: #fff; transform: translateY(-2px); }

/* Responsive */
@media (max-width: 768px) {
    .header-con h1 { font-size: 1.5rem; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}