* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Amazon Ember', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
}

body {
    background-color: #ffffff;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #232F3E;
}

.container {
    max-width: 600px;
    width: 100%;
    background-color: #ffffff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
    color: #232F3E;
}

.subtitle {
    font-size: 18px;
    margin-bottom: 12px;
    color: #FF9900;
    font-weight: 600;
}

.form-group {
    margin-bottom: 25px;
}

.spacer {
    height: 20px;
}

input[type="text"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #D5DBDB;
    border-radius: 6px;
    background-color: #ffffff;
    font-size: 16px;
    color: #232F3E;
}

input[type="text"]:focus {
    border-color: #FF9900;
    outline: none;
    box-shadow: 0 0 0 2px rgba(255, 153, 0, 0.2);
}

.radio-group {
    display: flex;
    gap: 20px;
    margin-bottom: 5px;
}

.radio-option {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.radio-option input {
    margin-right: 8px;
    cursor: pointer;
    accent-color: #FF9900;
}

button {
    width: 100%;
    padding: 14px;
    background-color: #FF9900;
    color: #232F3E;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

button:hover {
    background-color: #FFA41C;
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

.result {
    margin-top: 30px;
    padding: 20px;
    border-radius: 6px;
    display: none;
}

.result.success {
    background-color: rgba(35, 195, 137, 0.1);
    border: 1px solid #23C389;
}

.result.error {
    background-color: rgba(217, 83, 79, 0.1);
    border: 1px solid #D9534F;
}

.result h3 {
    margin-bottom: 10px;
    font-size: 18px;
    color: #232F3E;
}

.result p {
    margin-bottom: 5px;
    font-size: 14px;
    color: #545B64;
}

.loader {
    display: none;
    width: 48px;
    height: 48px;
    border: 5px solid rgba(255, 153, 0, 0.2);
    border-radius: 50%;
    border-top-color: #FF9900;
    animation: spin 1s ease-in-out infinite;
    margin: 20px auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .radio-group {
        flex-direction: column;
        gap: 10px;
    }
}