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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    text-align: center;
    position: relative;
}

h1 {
    color: #2d3748;
    font-size: 2.5em;
    margin-bottom: 10px;
}

.subtitle {
    color: #718096;
    font-size: 1.1em;
    margin-bottom: 20px;
}

.btn-refresh {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-refresh:hover {
    background: #5568d3;
}

.btn-copy {
    background: #48bb78;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 0.9em;
    cursor: pointer;
    margin-bottom: 15px;
    transition: background 0.3s ease;
}

.btn-copy:hover {
    background: #38a169;
}

.loading {
    background: white;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    font-size: 1.2em;
    color: #718096;
}

.error {
    background: #fed7d7;
    color: #c53030;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    border-left: 4px solid #c53030;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.card h2 {
    color: #2d3748;
    font-size: 1.5em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
}

.info-grid {
    display: grid;
    gap: 12px;
}

.info-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 15px;
    padding: 10px;
    background: #f7fafc;
    border-radius: 6px;
}

.info-key {
    font-weight: 600;
    color: #4a5568;
}

.info-value {
    color: #2d3748;
    word-break: break-all;
}

.info-note {
    margin-top: 15px;
    padding: 12px;
    background: #edf2f7;
    border-left: 4px solid #667eea;
    border-radius: 4px;
    font-size: 0.9em;
    color: #4a5568;
}

.headers-list {
    display: grid;
    gap: 8px;
}

.header-row {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 15px;
    padding: 12px;
    background: #f7fafc;
    border-radius: 6px;
    border-left: 3px solid #667eea;
}

.header-key {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: #2d3748;
    font-size: 0.9em;
}

.header-value {
    font-family: 'Courier New', monospace;
    color: #4a5568;
    word-break: break-all;
    font-size: 0.9em;
}

.no-data {
    color: #a0aec0;
    font-style: italic;
    padding: 20px;
    text-align: center;
}

.raw-data {
    background: #1a202c;
    color: #68d391;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
    line-height: 1.6;
}

footer {
    text-align: center;
    color: white;
    margin-top: 40px;
    padding: 20px;
    font-size: 0.9em;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.8em;
    }

    .info-row,
    .header-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .info-key,
    .header-key {
        padding-bottom: 5px;
        border-bottom: 1px solid #e2e8f0;
    }
}