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

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
}

/* 헤더 스타일 */
header {
    text-align: center;
    padding: 2rem 0;
}

header h1 {
    color: #2c3e50;
    font-size: 2.5rem;
}

/* 메인 컨텐츠 스타일 */
main {
    min-height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 인증 컨테이너 스타일 */
#auth-container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

/* 인증 폼 스타일 */
.auth-form {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.auth-form h2 {
    margin-bottom: 1.5rem;
    color: #2c3e50;
    text-align: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #666;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    background-color: white;
}

.form-group select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.8rem center;
    background-size: 1em;
    padding-right: 2.5rem;
}

.form-group select:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.25);
}

.form-group small {
    display: block;
    margin-top: 0.3rem;
    color: #666;
    font-size: 0.8rem;
}

.login-btn, 
#signupForm button[type="submit"] {
    width: 100%;
    padding: 12px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    margin-bottom: 20px;
}

.login-btn:hover,
#signupForm button[type="submit"]:hover {
    background-color: #0056b3;
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 20px 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid #ddd;
}

.divider span {
    padding: 0 10px;
    color: #666;
    font-size: 14px;
}

.social-login {
    margin-top: 20px;
}

.kakao-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: auto;
    padding: 0;
    background-color: transparent;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
}

.kakao-login-btn img {
    width: auto;
    height: auto;
    display: block;
}

.kakao-login-btn:hover {
    opacity: 0.9;
}

/* 링크 스타일 */
a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 푸터 스타일 */
footer {
    text-align: center;
    padding: 2rem 0;
    color: #666;
    font-size: 0.9rem;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .auth-form {
        padding: 1.5rem;
        max-width: 90%;
    }
    
    header h1 {
        font-size: 2rem;
    }
}