.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #004b93 0%, #001a33 100%);
    font-family: 'Noto Sans KR', sans-serif;
    padding: 20px;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    width: 100%;
    max-width: 450px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    background: #004b93;
    padding: 40px 20px;
    text-align: center;
    color: #fff;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.login-header p {
    font-size: 14px;
    opacity: 0.8;
}

.login-body {
    padding: 40px;
}

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

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #555;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #eee;
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s;
    outline: none;
}

.form-control:focus {
    border-color: #004b93;
    background: #f9fbff;
}

.login-btn {
    width: 100%;
    padding: 15px;
    background: #004b93;
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    margin-top: 10px;
}

.login-btn:hover {
    background: #003366;
    transform: translateY(-2px);
}

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

.login-footer {
    padding: 20px 40px 40px;
    text-align: center;
    border-top: 1px solid #eee;
}

.login-footer a {
    color: #666;
    font-size: 14px;
    margin: 0 10px;
    transition: color 0.3s;
}

.login-footer a:hover {
    color: #004b93;
    text-decoration: underline;
}

.social-login {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: opacity 0.3s;
}

.social-btn.naver {
    background: #03c75a;
    color: #fff;
}

.social-btn.kakao {
    background: #fee500;
    color: #3c1e1e;
}

.error-msg {
    color: #e74c3c;
    font-size: 13px;
    margin-bottom: 15px;
    text-align: center;
}