body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
}

.title {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: bold;
}

.input-section {
    margin-bottom: 30px;
}

.input-label {
    display: block;
    margin-bottom: 10px;
    color: #555;
    font-weight: 600;
    font-size: 16px;
}

.input-field {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 18px;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-field:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.3);
}

.result-section {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 5px solid #667eea;
}

.result-label {
    color: #555;
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 16px;
}

.result-text {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    word-break: break-all;
    line-height: 1.4;
}

.example-section {
    margin-top: 30px;
    padding: 20px;
    background: #e3f2fd;
    border-radius: 10px;
}

.example-title {
    font-weight: bold;
    color: #1976d2;
    margin-bottom: 10px;
}

.example-item {
    margin: 5px 0;
    color: #333;
}

.clear-btn {
    width: 100%;
    padding: 10px;
    background: #6c757d;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    margin-top: 10px;
    transition: all 0.3s ease;
}

.clear-btn:hover {
    background: #5a6268;
}

.formatted-amount {
    font-size: 18px;
    color: #666;
    margin-top: 5px;
}

.copy-btn {
    width: 100%;
    padding: 12px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 15px;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: #218838;
    transform: translateY(-1px);
}

.copy-btn:active {
    transform: translateY(0);
}

.copy-message {
    text-align: center;
    margin-top: 10px;
    font-weight: bold;
    font-size: 14px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.copy-message.success {
    color: #28a745;
    opacity: 1;
}

.copy-message.error {
    color: #dc3545;
    opacity: 1;
}

/* 간단한 버전 스타일 */
.simple-version {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 3px solid #667eea;
}

.simple-title {
    text-align: center;
    color: #333;
    margin-bottom: 25px;
    font-size: 24px;
    font-weight: bold;
}

.simple-examples {
    background: #f0f8ff;
    border: 2px solid #667eea;
}