@charset "utf-8";

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

.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: 2.2rem; font-weight: 700; color: #FFD700; }

.oit-section { margin-bottom: 40px; }

.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);
}

/* ตกแต่งพื้นหลังพิเศษสำหรับส่วน PDF */
.pdf-bg-container {
    background-color: #fdfaf5; 
    border: 2px solid #610505;
}

.card-header-badge {
    background: linear-gradient(135deg, #5A0000, #3a0000);
    padding: 15px 30px;
    border-bottom: 4px solid #FFD700;
}
.card-header-badge h3 { margin: 0; color: #fff; font-size: 1.3rem; font-weight: 700; }
.card-header-badge i { margin-right: 10px; color: #FFD700; }

.card-body-content { padding: 40px; }
.center-content { text-align: center; }

.responsive-img { max-width: 100%; height: auto; border-radius: 8px; }
.shadow-img { box-shadow: 0 5px 20px rgba(0,0,0,0.15); border: 1px solid #eee; }

.pdf-viewer-wrapper {
    background: #eee;
    padding: 10px;
    border-radius: 10px;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.1);
}

.download-list { display: flex; flex-direction: column; gap: 15px; }
.btn-download {
    display: block; padding: 15px 25px;
    background: #f8f9fa; border: 1px solid #ddd; border-radius: 50px;
    color: #333; text-decoration: none; font-weight: 600;
    transition: 0.3s;
}
.btn-download:hover { background: #5A0000; color: #fff; padding-left: 35px; }