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

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

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    padding: 40px;
    max-width: 800px;
    width: 100%;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    color: #333;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header p {
    color: #666;
    font-size: 1.1rem;
}

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

.download-item {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.download-item:hover {
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.1);
}

.download-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.version {
    font-size: 1.3rem;
    font-weight: bold;
    color: #333;
}

.date {
    color: #666;
    font-size: 0.9rem;
}

.file-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.file-name {
    font-weight: 500;
    color: #555;
}

.file-size {
    color: #888;
    font-size: 0.9rem;
}

.download-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.loading {
    text-align: center;
    color: #666;
    font-style: italic;
}

.error {
    background: #ffe6e6;
    border: 2px solid #ffcccc;
    color: #d63031;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

/* 로그인 모달 스타일 */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    width: 90%;
    max-width: 400px;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid #eee;
}

.modal-header h2 {
    margin: 0;
    color: #333;
    font-size: 1.5rem;
}

.close {
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: #000;
}

.modal-body {
    padding: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 25px;
}

.login-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.cancel-btn {
    background: #6c757d;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cancel-btn:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .file-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .form-actions {
        flex-direction: column;
    }
}