/* Methodology Page Styles */

.methodology-section {
    padding: 40px 0;
}

.methodology-section h2 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 20px;
    border-left: 5px solid #667eea;
    padding-left: 15px;
}

.methodology-intro {
    background: linear-gradient(135deg, #667eea10 0%, #764ba210 100%);
    border-left: 4px solid #667eea;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 40px;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #2c3e50;
}

.methodology-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.methodology-card h3 {
    font-size: 1.5rem;
    color: #667eea;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f4f8;
}

.methodology-card h4 {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-top: 25px;
    margin-bottom: 15px;
    font-weight: 700;
}

.methodology-card h5 {
    font-size: 1rem;
    color: #667eea;
    margin-bottom: 10px;
    font-weight: 700;
}

.methodology-content ul {
    list-style: disc;
    padding-left: 25px;
    margin-bottom: 20px;
}

.methodology-content ul ul {
    margin-top: 10px;
    list-style: circle;
}

.methodology-content li {
    margin-bottom: 10px;
    line-height: 1.7;
    color: #555;
}

.methodology-content li strong {
    color: #2c3e50;
    font-weight: 600;
}

.reference-box {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    padding: 20px;
    border-radius: 8px;
    margin-top: 25px;
}

.reference-box ul {
    margin-bottom: 0;
}

.reference-box li {
    color: #555;
    font-size: 0.95rem;
}

.data-table-wrapper {
    overflow-x: auto;
    margin: 25px 0;
}

.methodology-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

.methodology-table thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.methodology-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
}

.methodology-table tbody tr {
    border-bottom: 1px solid #f0f4f8;
    transition: background 0.2s ease;
}

.methodology-table tbody tr:hover {
    background: #f8f9fa;
}

.methodology-table td {
    padding: 12px 15px;
    color: #555;
    font-size: 0.9rem;
}

.methodology-table td:first-child {
    font-weight: 600;
    color: #2c3e50;
}

.formula-box {
    background: linear-gradient(135deg, #f093fb10 0%, #f5576c10 100%);
    border: 2px solid #f093fb;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
}

.formula-box p {
    margin-bottom: 10px;
    font-weight: 600;
    color: #2c3e50;
}

.formula-box code {
    display: block;
    background: white;
    padding: 15px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    color: #667eea;
    margin-bottom: 15px;
    font-size: 0.95rem;
    border-left: 4px solid #667eea;
}

.warning-card {
    border-left: 5px solid #f5576c;
}

.warning-card h3 {
    color: #f5576c;
}

.contact-card {
    background: linear-gradient(135deg, #667eea10 0%, #764ba210 100%);
    border-left: 5px solid #667eea;
}

.contact-card p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #2c3e50;
    margin-bottom: 10px;
}

.update-history {
    margin-top: 20px;
}

.update-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 4px solid #667eea;
}

.update-item strong {
    display: block;
    color: #667eea;
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.update-item ul {
    margin-top: 10px;
    margin-bottom: 0;
}

footer {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 0;
    text-align: center;
    margin-top: 60px;
}

footer p {
    margin: 8px 0;
    opacity: 0.9;
}

footer .back-link {
    margin-top: 20px;
}

footer .back-link a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 10px 20px;
    border: 2px solid white;
    border-radius: 25px;
    display: inline-block;
    transition: all 0.3s ease;
}

footer .back-link a:hover {
    background: white;
    color: #667eea;
}

/* 반응형 */
@media (max-width: 768px) {
    .methodology-section h2 {
        font-size: 1.5rem;
    }

    .methodology-card {
        padding: 20px;
    }

    .methodology-card h3 {
        font-size: 1.3rem;
    }

    .methodology-card h4 {
        font-size: 1.1rem;
    }

    .methodology-table {
        font-size: 0.85rem;
    }

    .methodology-table th,
    .methodology-table td {
        padding: 10px;
    }

    .formula-box code {
        font-size: 0.85rem;
        padding: 12px;
    }
}