.section-card { border: 1px solid #ccc; border-radius: 8px; padding: 10px; }
    .subsection { cursor: pointer; padding: 8px; border-bottom: 1px solid #eee; }
    .subsection:hover { background-color: #f1f1f1; }
    .section-title { font-weight: bold; background-color: #f0f0f0; }

h1 { text-align: center; margin-bottom: 30px; font-size: 2rem; color: #2c3e50; }
.section-header {
    background-color: #e9ecef;
    font-weight: bold;
    padding: 5px 12px;
    border-radius: 8px 8px 0 0;
    font-size: 1.2rem;
    text-align: center;
    border-bottom: 3px solid #adb5bd;
}
.column-box {
    background-color: white;
    border: 2px solid #ced4da;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    padding: 20px 15px 25px;
    height: 100%;
}
.item-row {
    padding: 12px 10px;
    border-bottom: 1px solid #e9ecef;
    align-items: center;
    transition: background-color 0.2s;
}
.item-row:hover {
    background-color: #f8f9fa;
}
.item-row:last-child {
    border-bottom: none;
}

.fault-circle {
    width: 1.65rem;
    height: 1.65rem;
    border-radius: 50%;
    border: 2.5px solid #6c757d;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1rem;
    color: #495057;
    margin: 0 0.2rem;
    transition: all 0.2s;
}

.fault-checkbox {
    opacity: 0;
    width: 100%;
    height: 100%;
}
.fault-checkbox:checked + .fault-circle {
    background-color: #dc3545;
    color: white;
    border-color: #dc3545;
    transform: scale(1.1);
}
.fault-circle:hover {
    border-color: #495057;
    transform: scale(1.05);
    cursor: pointer;
}

.result-box {
    display: none;
    margin: 30px 0;
    padding: 35px;
    border-radius: 15px;
    text-align: center;
    font-size: 1.8rem;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}
.pass {
    background-color: #d4edda;
    border: 5px solid #28a745;
    color: #155724;
}
.fail {
    background-color: #f8d7da;
    border: 5px solid #dc3545;
    color: #721c24;
}
.total-faults-box {
    background-color: #e9ecef;
    padding: 20px;
    border-radius: 10px;
    margin-top: 30px;
    text-align: center;
}
.total-faults-box strong {
    font-size: 1.3rem;
    display: block;
    margin-bottom: 15px;
    color: #2c3e50;
}
.form-check-inline .form-check-input {
    cursor: pointer;
    width: 1.8em;
    height: 1.8em;
}
.form-check-inline .form-check-label {
    font-size: 1.4rem;
    font-weight: bold;
    cursor: pointer;
    margin: 0 20px;
}
.start-new-btn {
    margin-top: 20px;
}