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

body {
    font-family: 'Segoe UI', 'Arial', sans-serif;
    background: #e9ecef;
    padding: 30px 20px;
}

.card-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

/* Screen preview (scaled 4x for readability) */
.card {
    width: 216px;      /* 54mm * 4 */
    height: 344px;     /* 86mm * 4 */
    background: white;
    border: 1px solid #ccc;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* School header – plain text, no colors */
.school-name {
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    letter-spacing: 0.5px;
}

.school-sub {
    font-size: 10px;
    font-weight: 600;
    text-align: center;
    margin-top: 2px;
}

.school-address {
    font-size: 7px;
    text-align: center;
    color: #333;
    margin-top: 4px;
}

.separator {
    height: 1px;
    background: #000;
    margin: 8px 0;
}

/* Main content area with photo on right */
.card-body {
    flex: 1;
    display: flex;
    gap: 10px;
    margin: 5px 0;
}

.student-details {
    flex: 2;
}

.student-name {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 12px;
}

.detail-row {
    margin-bottom: 6px;
    font-size: 9px;
}

.detail-label {
    font-weight: bold;
    display: inline-block;
    width: 55px;
}

.detail-value {
    font-weight: normal;
}

.photo-area {
    flex: 1;
    text-align: center;
}

.photo-area img {
    width: 70px;
    height: 70px;
    object-fit: cover;
    border: 1px solid #ccc;
    background: #f5f5f5;
}

.no-photo {
    width: 70px;
    height: 70px;
    background: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: #999;
    border: 1px dashed #aaa;
}

/* Footer – principal */
.card-footer {
    text-align: center;
    margin-top: auto;
    padding-top: 6px;
}

.signature-line {
    width: 80px;
    height: 1px;
    background: #000;
    margin: 5px auto;
}

.signature-img {
    max-height: 24px;
    width: auto;
    margin-bottom: 2px;
}

.principal-text {
    font-size: 9px;
    font-weight: normal;
}

/* Print – exact 54x86mm */
@media print {
    body {
        background: white;
        padding: 0;
        margin: 0;
    }
    @page {
        size: 54mm 86mm;
        margin: 0;
    }
    .card-container {
        display: block;
        margin: 0;
        padding: 0;
    }
    .card {
        width: 54mm;
        height: 86mm;
        margin: 0;
        page-break-after: avoid;
        page-break-inside: avoid;
        break-inside: avoid;
        border: 0.5px solid #ccc;
        padding: 3mm 2mm;
    }
    .school-name {
        font-size: 4.5mm;
    }
    .school-sub {
        font-size: 2.8mm;
    }
    .school-address {
        font-size: 2.2mm;
    }
    .separator {
        margin: 2mm 0;
    }
    .student-name {
        font-size: 4mm;
        margin-bottom: 2mm;
    }
    .detail-row {
        font-size: 2.5mm;
        margin-bottom: 1.5mm;
    }
    .photo-area img {
        width: 15mm;
        height: 15mm;
    }
    .principal-text {
        font-size: 2.8mm;
    }
    .signature-line {
        width: 20mm;
    }
}