/* === 全域背景與字型 === */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(to bottom right, #cfd9df, #e2ebf0);
}

h2 {
    margin-top: 20px;
    margin-bottom: 20px;
    font-weight: bold;
    color: #0056b3;
}

/* === 卡片容器 === */
.row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.col-md-4 {
    flex: 0 0 calc(33.333% - 20px);
}

@media (max-width: 768px) {
    .col-md-4 {
        flex: 0 0 calc(50% - 20px);
    }
}

@media (max-width: 576px) {
    .col-md-4 {
        flex: 0 0 100%;
    }
}

/* === 卡片 === */
.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

    .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    }

.card-header {
    background-color: #007bff;
    color: #fff;
    padding: 10px 15px;
    font-weight: bold;
    font-size: 1.1rem;
}

.card-body {
    padding: 15px;
}

    .card-body p {
        margin-bottom: 0.4rem;
        font-size: 0.95rem;
        color: #333;
    }

        .card-body p strong {
            display: inline-block;
            min-width: 80px;
            color: #007bff;
        }

/* === 警告框 === */
.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeeba;
    color: #856404;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}