body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    max-width: 450px;
    width: 100%;
    padding: 0 20px;
}

.login-card {
    background: #ffffff;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 50px 40px;
}

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

.login-logo {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.login-icon {
    font-size: 4rem;
    color: #667eea;
    margin-bottom: 20px;
}

.login-title {
    font-size: 2rem;
    font-weight: 700;
    color: #333333;
    margin-bottom: 10px;
}

.login-subtitle {
    color: #666666;
    font-size: 0.95rem;
}

.btn-microsoft {
    background: #2f2f2f;
    color: #ffffff;
    border: none;
    padding: 15px 30px;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 500;
    transition: all 0.3s ease;
    width: 100%;
}

.btn-microsoft:hover {
    background: #1a1a1a;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.microsoft-logo {
    width: 21px;
    height: 21px;
    margin-right: 12px;
}